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BABEL.LF
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1996-06-04
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% PVR (17.9.92): Several spelling errors have been corrected.
% Alas, much of the hierarchy is inconsistent because
% the 'definition' fields clash!
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% THE LIBRARY OF BABEL %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% The Knowledge Base of BABEL
% [...] solution to the ancient problem:
% The library is unlimited and cyclical.}
% If an eternal traveler were to cross it
% in any direction, after centuries he
% would see that the same volumes were
% repeated in the same disorder (which,
% thus repeated, would be an order: the
% Order).
%
% Jorge Luis Borges
% The Library of Babel
% The practical upshot of all this is
% that if you stick a Babel fish in your
% ear you can instantly understand
% everything said to you in any form of
% language.
%
% Douglas Adams
% The Hitchhicker's Guide to the Galaxy
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% The class 'library_material' is a class of all materials in %
% the library, and hence can be defined as the highest class %
% of the library class hierarchy. Each library item is an %
% instance of 'library_material'. Every library item shares %
% common attributes. Those common attributes can be defined %
% at the highest class of the hierarchy, 'library_material'. %
% Among the attributes of each object, definition explains %
% what the object is, and attribute explains the attributes of %
% the object if the object has any attributes other than %
% definition. %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
op(100,xfx,--)?
library_material :=
@(title => string
,l_responsibility => list_responsibility
,s_responsibility => set_responsibility
,language => languages
,subject => subjects
,publisher => publish
,call_number => lc_number
,date_of_pub => date
,lend_info => lend_tab
,recalled => record__key
,recall_info => record__key
,reserve_info => record__key
,definition => "library_material spans all objects in the library"
,attribute => "
'library_material' has following attributes:").
% title: the title of the item.
% l_responsibility and s_responsibility:
% the name of either authors, editors or associations which are
% responsible for the item. The difference between these two is
% the later keeps the names as a disjunctive classes,
% while the former keeps those as a list of names.
% language: the language in which the item is described.
% publisher: the information about the publisher.
% call_number: the library of congress number.
% date_of_pub: the date of publish.
% lend_info: the information about lend status of the item.
% recalled: a record__key which is the key of the record which
% contains either 'yes' or 'no' to show whether the item is recalled.
% recall_info: a record__key which is the key of the record which contains
% the information table for the user who recalled the item.
% reserve_info: a record__key which is the key of the record which
% contains the reserve information of the item.").
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% if the value 'type' in 'lresponsibility' is 'author', %
% then 'list_responsibility' has an attribute, 'author => name_list', %
% if the value 'type' in 'lresponsibility' is 'editor', %
% then 'list_responsibility' has an attribute, 'editor => name_list', %
% if the value 'type' in 'lresponsibility' is 'association', %
% then 'list_responsibility' has an attribute, %
% 'association => assoc_list'. %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
list_responsibility :=
{ author_list(type => author, author => name_list)
; editor_list(type => editor, editor => name_list)
; association_list(type => association, association => assoc_list)}.
set_responsibility :=
{ author_set(type => author, author => name_set)
; editor_set(type => editor, editor => name_set)
; association_set(type => association, association => assoc_set)}.
name_set ->
{ full_name ; name_set }.
assoc_set ->
{ string ; assoc_set }.
name_list :=
@(name => full_name
,co_name => name_list
,definition => "'name_list' is a list of names of people"
,attribute => "
'name_list' has two attributes:
'name': A full name of a person.
'co_name': Either instantiated to a name_list or uninstantiated.
If co_name is instantiated to a name_list, name_list
has a full_name of another people.").
full_name :=
@(fname => string
,mname => string
,lname => string
,definition => "'full_name' is a full name of a person"
,attribute => "
'full_name' has three attributes. 'fname' for first name,
'mname' for middle name, 'lname' for last name").
assoc_list :=
@(assoc_name => string
,co_assoc => assoc_list
,definition => "'assoc_name' is a list of the names of associations"
,attribute => "
'assoc_list' has two attributes.
'assoc_name' is a name of an association,
'co_assoc' is either another 'assoc_list' or uninstantiated.").
languages :=
{english;french;german;japanese;chinese;korean;
spanish; portuguese;italian;latin;greek;hebrew}.
publish :=
@(publisher_name => List1
,address => place
,definition => "'publish' has the information of publisher"
,attribute => "'publish' has two attributes, publisher_name and address.").
place :=
@(street => string
,city => string
,state => string
,zip_code => string
,nation => string
,definition => "'place' is an address"
,attribute => "
'place' has five attributes: 'street' which is a street address,
'city', 'state', 'zip_code', and 'nation'").
lc_number :=
@(c_letter => string
,f_digit => [1--9999]
,s_digit => [1--9999999]
,cuttering => string
,definition => "'lc_number' is a library congress number."
,attribute => "
'lc_number' consists of four attributes:
'c_letter': a category letter which is one or two alphabet characters.
'f_digit': the first four digits of lc_number.
's_digit': the second 7 digits.
'cuttering': a cutterring of the item" ).
date :=
@(day => [1--31]
,month => [1--12]
,year => [0--3000]
,definition => "It is a date"
,attribute => "'date' has three attributes, day, month, and year").
lend_tab :=
@(library_use_only => record__key % a key of a record of boolean
,lend_period => record__key % a key of a record of period
,checked_out => record__key % a key of a record of boolean
,checking_time => record__key % a key of a record of time
,ss_number => record__key % a key of a record of ss_num
,return_time => record__key % a key of a record of time
,definition => "
'lend_tab' contains informations about lend status of a material"
,attribute => "
'lend_tab' has five attributes:
'library_use_only': boolean if a material can be checked out.
'lend_period' : allowed check out period of a material.
'checked_out' : a boolean if a material is currently checked out.
'checking_time': the time a material is checked out.
'return_time' : the time a material is returned." ).
boolean := {yes;no}.
period :=
@(unit => time_unit
,amount => integer
,definition => "It is a period"
,attribute => "
'period' has two attributes:
'unit': a unit of time.
'amount': the amount of time.
For example, if 'unit' is 'weeks' and 'amount' is 5,
then 'period' is 5 weeks.").
time_unit := {hours; days; weeks; months; years}.
time :=
@(minute => [0--59]
,hour => [0--23]
,check_date => date
,definition => "It is a time"
,attribute => "
'time' has three attributes:
'minute', 'hour', and 'check_date' which is the date of the time").
recall_tab :=
@(type => {recall; search}
,ss_number => ss_num
,more => record__key % a key of a record of another recall_tab
,definition => "
'recall_tab' is a table which contains the information for
all recall requests for the material."
,attribute => "
'recall_tab' has five attributes:
'type': the type of recall, recall or search.
'ss_number': a social security number of the user.
'more': a record__key to 'recall_tab' for another user who
recalled the same item.").
ss_num :=
@(first => ['000'--'999']
,middle => ['00'--'99']
,last => ['0000'--'9999']
,definition => "'ss_num' is a social security number"
,attribute => "
'ss_num' has three attributes:
'first': the first three digits of a social security number.
'middle': the two digits in the middle.
'last': is the last four digits.").
reserve_tab :=
@(instructor => full_name
,course_name => string
,course_number => string
,semester => semesters
,year => [1900--2000]
,definition => "
'reserve_tab' is a table which contains informations about course name,
instructor, and reserved period."
,attribute => "
'reserve_tab' has six attributes:
'instructor': the name of the instructor reserved the item.
'course_name' and 'course_number' for which the item is reserved.
'lend_period': the lend period of the item.
'semester' and 'year': the semester during which the item is reserved.").
semesters := {spring; summer; fall}.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% Hierarchy of the class of library objects according to physical %
% description. %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
printed_monograph :=
library_material
(pages => integer
,definition => "
'printed_monograph' is a class of all printed material including books,
pamphlets, and printed sheets."
,attribute => "
'printed_monograph' has attribute, 'pages', which is the number of pages
of the material. It has two subclasses, 'pamphlet' and 'monograph'." ).
pamphlet :=
printed_monograph
(definition => "'pamphlet' is a class of all printed sheets and pamphlets.").
monograph :=
printed_monograph
(isbn => string
,definition => "'monograph' is a class of all kinds of books."
,attribute => "
'monograph' has an attribute, 'isbn', which is an international standard
book number of the item. It has three subclasses, 'thesis', 'textbook',
and 'books'.").
thesis :=
monograph
(major => string
,institute => string
,degree => degree_list
,award_date => date
,definition => "'thesis' is a class of theses including technical report."
,attribute => "
'thesis' has attributes, 'major', 'institute', 'degree', and
'award_date'. It has one subclass, technical_report.").
technical_report :=
thesis
(report_number => string
,definition => "
'technical_report' is a class of all technical reports."
,attribute => "
'technical_report' has an attribute, 'number', which is a serial
number of a technical report.").
degree_list := {'Ph.D'; 'M.A.';'M.S.';'M.D.';'M.B.A.'}.
textbook :=
monograph
(edition => integer
,definition => "'textbook' is a class of all textbooks."
,attribute => "
'textbook' has an attribute, edition, which is an edition number.
It has two subclasses, 'elementary_textbook', and 'advanced_textbook'.").
elementary_textbook :=
textbook
(definition => "
'elementary_textbook' is a class of all textbooks for elementary school.").
advanced_textbook :=
textbook
(definition => "
'advanced_textbook' is a class of all textbooks for high school.").
books :=
monograph
(edition => integer
,definition => "'books' is a class of all books."
,attribute => "
'books' has an attribute, edition, for the edition number of a book.
It has several subclasses. Those are 'multi_volume_books',
'single_volume_books', and 'series_books'.").
multi_volume_books :=
books
(volume => integer
,definition => "
'multi_volume_books' is a class of all books which consist of several
volumes. However it does not include 'series_books'."
,attribute => "
'multi_volume_books' has an attribute, 'volume', which is the volume
number of the book.").
single_volume_books :=
books
(definition => "
'single_volume_books' is a class of all single volume books.").
cartographic_material :=
library_material
(definition => "
'cartographic_material' is a class of all geographical representations.
It has several subclasses include 'globes' and 'maps_atlas'.").
globes :=
cartographic_material
(scale => integer
,definition => "'globes' is a class of all 3-dimensional globes of earth."
,attribute => "
'globes' has an attribute, scale, which is a reciprocal of scale,
i.e., 50000 for 1 : 50000 scale globe.").
maps_atlas :=
cartographic_material
(edition => integer
,definition => "'maps_atlas' is a class of all kind of maps and atlas."
,attribute => "
'maps_atlas' has an attribute, 'edition', which has edition number.
It has several subclasses including 'maps' and 'atlas'.").
maps :=
maps_atlas
(scale => integer
,definition => "'maps' is a class of all maps."
,attribute => "
'maps' has an attribute, 'scale', which is a reciprocal of scale.").
atlas :=
maps_atlas
(isbn => string
,pages => integer
,definition => "
'atlas' is a volume of maps with or without descriptive letterpress."
,attribute => "
'atlas' has attributes, 'isbn and 'pages'.
'isbn' is an international standard book number,
'pages' is the number of pages in an atlas.
It has several subclasses including 'world_atlas', 'national_atlas',
and 'thematic_atlas'.").
world_atlas :=
atlas
(definition => "
'world_atlas' is a class of all atlas which contain mostly world maps.").
national_atlas :=
atlas
(definition => "
'national_atlas' is a class of all atlas which contains national maps.").
world_map :=
maps
(definition => "
'world_map' is a class of all maps which describe the world.").
national_map :=
maps
(definition => "
'national_map' is a class of all maps which describe a nation").
local_map :=
maps
(definition => "
'local_map' is a class of all maps which describe a part of a nation.").
music_score :=
library_material
(edition => integer
,op_number => integer
,pages => integer
,definition => "'music_score' is a class of all music score."
,attribute => "
'music_score' has three attributes. 'edition' for edition number,
'op_number' for opus number, and 'pages' for the number of pages.").
chorus_score :=
music_score
(definition => "
'chorus_score' is a class of all scores of vocal work showing only
the chorus part.").
instrument_score :=
music_score
(definition => "
'instrument_score' is a class of all scores of a instrument part
of a music.").
vocal_score :=
music_score
(definition => "
'vocal_score' is a class of all scores showing all vocal parts.").
sound_recording :=
library_material
(playing_time => running_time
,num_channel => channels
,recording_type => rec_type
,definition => "
'sound_recording' is a class of all recordings."
,attribute => "
'sound_recording' has three attributes. 'playing_time' is total
playing time of a recording. 'num_channel' is the number of channel,
'recording_type' is the type of recording such as digital for digital
recording, and analog for analog recording.
It has sevral subclasses including 'disk', 'tape', and 'sound_film'.").
running_time :=
@(sec => [0--59]
,min => [0--59]
,hour => [0--99]
,definition => "'running_time' is the total playing time."
,attribute => "'runing_time' has attributes, 'sec', 'min', and 'hour'.").
channels := {mono; stereo; '4_track'; '8_track'}.
rec_type := {analog; digital}.
disc :=
sound_recording
(definition => "
'disc' is a class of all sound recordings which are recorded on disc.
It has several subclasses including 'compact_disc' and 'poly_disc'.") .
compact_disc :=
disc
(definition => "'compact_disc' is a class of all compact discs.").
poly_disc :=
disc
(playing_speed => disc_speed
,definition => "'poly_disc' is a class of all conventional record discs."
,attribute => "
'poly_disc' has an attribute, 'playing_speed', which is the speed of
a turntable for the disc.").
disc_speed := {lp; sp; lsp}.
tape :=
sound_recording
(definition => "
'tape' is a class of all sound recording recorded in tape.
It has several subclasses including 'cassette', 'cartridge',
and 'reel_to_reel' according to extent of item.").
cassette :=
tape
(definition => "'cassette' is a class of all cassette tape.").
cartridge :=
tape
(definition => "'cartridge is a class of all cartridge tape.").
reel_to_reel :=
tape
(definition => "
'reel_to_reel' is a class of all open reel tape.").
motion_picture :=
library_material
(playing_time => running_time
,color => boolean
,sound => boolean
,definition => "
'motion_picture' is a class of all films including cideo tapes and
video discs."
,attribute => "
'motion_picture' has three attributes.
'playing_time' is the total length of playing time.
'color' is a boolean showing whether the color of images is
natural color or black and white.
'sound' is a boolean which shows whether it has sound.").
motion_film :=
motion_picture
(definition => "
'motion_film' is a class of allN motion_picture in length of film.").
video_tape :=
motion_picture
(definition => "'video_tape' is a class of all video cassette tapes.").
video_disc :=
motion_picture
(definition => "'video_disc' is a class of all video disc.").
sound_film :=
sound_recording
(definition => "'sound_film' is a class of all film with sound track.").
sound_film <| motion_film.
sound_vtape :=
sound_recording
(definition => "
'sound_vtape' is a class of all video tape with sound track.").
sound_vtape <| video_tape.
sound_vdisc :=
sound_recording
(definition => "
'sound_vdisc' is a class of all video disc with sound track.").
sound_vdisc <| video_disc.
microforms :=
library_material
(definition => "
'microforms' is a class of all library material in any medium
transparent or opaque, bearing micro images.").
microfilm :=
microforms
(definition => "'microfilm' is a class of all microfilms.").
microfiche :=
microforms
(num_frame => integer
,definition => "
'microfiche' is a class of all microforms in a sheet of
film bearing a number of microimages in a two dimensional array."
,attribute => "
'microfiche' has an attribute, 'num_frame', which is the number of
microimages in each sheet.").
books_in_microforms :=
microforms
(definition => "
'books_in_microforms' is a class of all microforms whose content
is the copy of a book.").
books_in_microforms <| books.
multi_volume_books_in_microforms :=
multi_volume_books
(definition => "
'multi_volume_books_in_microforms' is a class of all microforms of
which content is the copy of a multi_volume book.").
multi_volume_books_in_microforms <| books_in_microforms.
single_volume_books_in_microforms :=
single_volume_books
(definition => "
'single_volume_books_in_microforms' is a class of all microforms of
which content is the copy of a single_volume book.").
single_volume_books_in_microforms <| books_in_microforms.
books_in_microfilm :=
microfilm
(definition => "
'books_in_microfilm' is a class of all microfilms whose content
is the copy of a book.").
books_in_microfilm <| books.
multi_volume_books_in_microfilm :=
multi_volume_books_in_microforms
(definition => "
'multi_volume_books_in_microfilm' is a class of all microfilms
whose content is the copy of a multi_volume book.").
multi_volume_books_in_microfilm <| books_in_microfilm.
single_volume_books_in_microfilm :=
single_volume_books_in_microforms
(definition => "
'single_volume_books_in_microfilm' is a class of all microfilms
whose content is the copy of a single_volume book.").
single_volume_books_in_microfilm <| books_in_microfilm.
serials :=
library_material
(volume => integer
,number => integer
,issn => string
,definition => "
'serials' is a class of all publications in any medium issued in
successive parts bearing numerical or chronological designations
and intended to be continued indefinitely."
,attribute => "
'serials' has three attributes, 'volume' for a volume number of a
material, 'number' for a number within a volume,
and 'issn' for international standard serial number.").
series :=
serials
(definition => "
'series' is a group of seperate items related one another by the
fact that each item bears.").
series_books :=
books
(definition => "'series_books' is a class of all books in series").
series_books <| series.
series_books_in_microforms :=
series_books
(definition => "
'series_books_in_microforms' is a class of all microforms whose
content is a copy of a series books.").
series_books_in_microforms <| books_in_microforms.
series_books_in_microfilm :=
series_books_in_microforms
(definition => "
'series_books_in_microfilm' is a class of all microfilms whose
content is a copy of a series book.").
series_books_in_microfilm <| books_in_microfilm.
periodical :=
serials
(definition := "
'periodical' is a class of all serials which is regulary issued.").
academic_journal :=
serials
(definition => "
'academic_journal' is a class of all journals whose content is
a news of academic society and research papers.").
journalism_serial :=
serials
(definition => "
'journalism_serial' is a class of all serials of news media, including
newspaper, weekly news magazine.").
magazines :=
serials
(definition => "
'magazines' is a class of all magazines which are not academic journals
nor news magazines. It includes magazine for hobbiest and consumer
reports.").
transactions :=
serials
(definition => "
'transactions' is a class of all transactions of societies").
proceedings :=
serials
(definition => "
'proceedings' is a class of all proceedings of conferences of societies.").
daily_periodical :=
periodical
(frequency => 'daily'
,definition => "
'daily_periodical' is a class of all periodicals issued daily."
,attribute => "
'daily_periodical' has one attribute, 'frequency', whose value is
a string, 'daily'.").
weekly_periodical :=
periodical
(frequency => 'weekly'
,definition => "
'weekly_periodical' is a class of all periodicals issued weekly."
,attribute => "
'weekly_periodical' has an attribute, 'frequency', whose value is
a string, 'weekly'.").
monthly_periodical :=
periodical
(frequency => 'monthly'
,definition => "
'monthly_periodical' is a class of all periodicals issued monthly."
,attribute => "
'monthly_periodical' has an attribute, 'frequency', whose value is
a string, 'monthly'.").
quarterly_periodical :=
periodical
(frequency => 'quarterly'
,definition => "
'quarterly_periodical' is a class of all periodicals issued quarterly."
,attribute => "
'quarterly_periodical' has one attribute, 'frequency', whose value is
a string, 'quarterly'.").
yearly_periodical :=
periodical
(frequency => 'yearly'
,definition => "
'yearly_periodical' is a class of all periodicals issued yearly."
,attribute => "
'yearly_periodical' has one attribute, 'frequency', whose value is
a string, 'yearly'.").
weekly_academic_journal :=
weekly_periodical
(definition => "
'weekly_academic_journal' is a class of all academic journals
issued every week.").
weekly_academic_journal <| academic_journal.
monthly_academic_journal :=
monthly_periodical
(definition => "
'monthly_academic_journal' is a class of all academic journals
issued every month.").
monthly_academic_journal <| academic_journal.
quarterly_academic_journal :=
quarterly_periodical
(definition => "
'quarterly_academic_journal' is a class of all academic journals
issued every three months.").
quarterly_academic_journal <| academic_journal.
yearly_academic_journal :=
yearly_periodical
(definition => "
'yearly_academic_journal' is a class of all academic journals
issued every year.").
yearly_academic_journal <| academic_journal.
daily_newspaper :=
daily_periodical
(definition => "
'daily_newspaper' is a class of all newspapers which are
issued on every day.").
daily_newspaper <| journalism_serial.
weekly_news_magazine :=
weekly_periodical
(definition => "
'weekly_news_magazine' is a class of all news magazines
issued every week.").
weekly_news_magazine <| journalism_serial.
monthly_news_magazine :=
monthly_periodical
(definition => "
'monthly_news_magazine' is a class of all news magazines which are
issued every month.").
monthly_news_magazine <| journalism_serial.
weekly_magazine :=
magazine
(definition => "
'weekly_magazine' is a class of all magazines which is issued
every week.").
weekly_magazine <| weekly_periodical.
monthly_magazine <| monthly_periodical.
monthly_magazine :=
magazine
(definition => "
'monthly_magazine' is a class of all magazines which are issued
every month.").
quarterly_magazine :=
magazine
(definition => "
'quarterly_magazine' is a class of all magazines which are issued
every three months.").
quarterly_magazine <| quarterly_periodical.
monthly_transactions :=
transactions
(definition => "
'monthly_transactions' is a class of all transactions of
societies issued every month.").
monthly_transactions <| monthly_periodical.
quarterly_transactions :=
transactions
(definition => "
'quarterly_transactions' is a class of all transactions of societies
issued every three months.").
quarterly_transactions <| qurterly_periodical.
yearly_transactions :=
transactions
(definition => "
'yearly_transactions' is a class of all transactions of a
society issued every year.").
yearly_transactions <| yearly_periodical.
monthly_proceedings :=
proceedings
(definition => "
'monthly_proceedingss' is a class of all proceedings of
conference of societies issued every month.").
monthly_proceedings <| monthly_periodical.
quarterly_proceedings :=
proceedings
(definition => "
'quarterly_proceedingss' is a class of all proceedings of
conference of societies issued every three months.").
quarterly_proceedings <| qurterly_periodical.
yearly_proceedings :=
proceedings
(definition => "
'yearly_proceedingss' is a class of all proceedings of a
conference of societies which is issued every year.").
yearly_proceedings <| yearly_periodical.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% Hierarchy according to subject. %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
general_reference :=
library_material
(definition => "
'general_reference' is a class of all materials which are
used as references.").
encyclopedia :=
general_reference
(definition => "
'encyclopedia' is a class of all encyclopedia. It has
two subclasses, 'general_encyclopedia' and 'subject_encyclopedia'").
dictionary :=
general_reference
(definition => "
'dictionary' is a class of all dictionary. It has several subclasses
including 'unabridged_dictionary', 'desk_dictionary',
and special_dictionary.").
geographic_reference :=
general_reference
(definition => "
'geographic_reference' is a class of references for all kinds of
geographic matter. It has several subclasses like 'maps_atlas',
'gazeteer', and 'guidebook'.").
gazeteer :=
geographic_reference
(definition => "
'gazeteer' is a class of all geographical dictionary.").
maps_atlas <| geographical_reference.
general_encyclopedia :=
encyclopedia
(definition => "
'general_encyclopedia' is a class of all encyclopedia that
contain information on all branches of knowledge.").
subject_encyclopedia :=
encyclopedia
(definition => "
'subject_encyclopedia' is a class of all encyclopedia that
treats comprehensively a particular branch of knowledge.").
unabridged_dictionary :=
dictionary
(definition => "
'unabridged_dictionary' is a class of all unabridged dictionary").
desk_dictionary :=
dictionary
(definition => "
'desk_dictionary' is a class of all dictionary which is abridged,
and contains college level words.").
special_dictionary :=
dictionary
(definition => "
'special_dictionary' is a class of all dictionary which has special
purpose like slang, 'synonym_antonym', or 'foreign_language' dictionary").
slang_dictionary :=
special_dictionary
(definition => "
'slang_dictionary' is a class of all slang dictionaries.").
synonym_antonym_dictionary :=
special_dictionary
(definition => "
'synonym_antonym_dictionary' is a class of all dictionarie which
explains synonym and/or antonym of words.").
foreign_language_dictionary :=
special_dictionary
(source_language => languages
,destination_language => languages
,definition => "
'foreign_language_dictionary' is a class of all dictionaries for
foreign languages."
,attribute => "
'foreign_language_dictionary' has two attributes, 'source_language'
and 'destination_language'.").
philosophy_material :=
library_material
(subject => philosophy
,definition => "
'philosophy_material' is a class of all library materials whose
subject is philosophy.").
religion_material :=
library_material
(subject => religion
,definition => "
'religion_material' is a class of all library materials whose subject
is religion.").
social_science_material :=
library_material
(subject => social_science
,definition => "
'social_science_material' is a class of all library materials whose
subject is social science.").
language_material :=
library_material
(subject => language
,definition => "
'language_material' is a class of all library materials whose subject
is language.").
pure_science_material :=
library_material
(subject => pure_science
,definition => "
'pure_science_material' is a class of all library materials whose
subject is pure science.").
applied_science_material :=
library_material
(subject => applied_science
,definition => "
'applied_science_material' is a class of all library materials whose
subject is applied science.").
art_material :=
library_material
(subject => art
,definition => "
'art_material' is a class of all library materials whose subject
is art.").
literature_material :=
library_material
(subject => literature
,definition => "
'literature_material' is a class of all library materials whose
subject is literature.").
history_material :=
library_material
(subject => history
,definition => "
'history_material' is a class of all library materials whose subject
is history.").
metaphysics_material :=
philosophy_material
(subject => metaphysics
,definition => "
'metaphysics_material' is a class of all philosophy materials whose
subject is metaphysics.").
psychology_material :=
philosophy_material
(subject => psychology
,definition => "
'psychology_material' is a class of all philosophy materials whose
subject is psychology.").
logic_material :=
philosophy_material
(subject => logic
,definition => "
'logic_material' is a class of all philosophy materials whose
subject is logic.").
ethics_material :=
philosophy_material
(subject => ethics
,definition => "
'ethics_material' is a class of all philosophy materials whose
subject is ethics.").
physiological_psychology_material :=
psychology_material
(subject => physiological_psychology
,definition => "
'physiological_psychology_material' is a class of all psychology
materials whose subject is physiological psychology").
intelligent_intellect_material :=
psychology_material
(subject => intelligent_intellect
,definition => "
'intelligent_intellect_material' is a class of all psychology materials
whose subject is intelligent intellect").
induction_material :=
logic_material
(subject => induction
,definition => "
'induction_material' is a class of all logic materials whose
subject is induction").
deduction_material :=
logic_material
(subject => deduction
,definition => "
'deduction_material' is a class of all logic materials whose subject
is deduction").
analogy_material :=
logic_material
(subject => analogy
,definition => "
'analogy_material' is a class of all logic materials whose
subject is analogy").
natural_religion_material :=
religion_material
(subject => natural_religion
,definition => "
'natural_religion_material' is a class of all religion materials whose
subject is natural religion").
christian_theology_material :=
religion_material
(subject => christian_theology
,definition => "
'christian_theology_material' is a class of all religion materials of
which subject is christian theology").
other_religion_material :=
religion_material
(subject => other_religion
,definition => "
'other_religion_material' is a class of all religion materials whose
subject deals with non-christian religions.").
statistics_material :=
social_science_material
(subject => the_statistics
,definition => "
'statistics_material' is a class of all social science materials whose
subject is statistics.").
political_science_material :=
social_science_material
(subject => political_science
,definition => "
'political_science_material' is a class of all social science materials
whose subject is political science").
economics_material :=
social_science_material
(subject => economics
,definition => "
'economics_material' is a class of all social science materials whose
subject is economics").
law_material :=
social_science_material
(subject => law
,definition => "
'law_material' is a class of all social science materials whose
subject is law").
linguistics_material :=
language_material
(subject => linguistics
,definition => "
'linguistics_material' is a class of all language materials whose
subject is linguistics").
english_material :=
language_material
(subject => english
,definition => "
'english_material' is a class of all language materials whose
subject is english").
german_material :=
language_material
(subject => german
,definition => "
'german_material' is a class of all language materials whose
subject is german").
french_material :=
language_material
(subject => french
,definition => "
'french_material' is a class of all language materials whose
subject is french").
computational_liguistics_material :=
linguistics_material
(subject => computational_linguistics
,definition => "
'computational_linguistics_material' is a class of all linguistics
materials whose subject is computational linguistics.").
etymology_material :=
linguistics_material
(subject => etymology
,definition => "
'etymology_material' is a class of all linguistics materials whose
subject is etymology.").
phonology_material :=
linguistics_material
(subject => phonology
,definition => "
'phonology_material' is a class of all linguistics materials whose
subject is phonology.").
structural_system_material :=
linguistics_material
(subject => structural_system
,definition => "
'structural_system_material' is a class of all linguistics materials
whose subject is structural system.").
mathematics_material :=
pure_science_material
(subject => mathematics
,definition => "
'mathematics_material' is a class of all pure science materials whose
subject is mathematics.").
computer_science_material :=
pure_science_material
(subject => computer_science
,definition => "
'computer_science_material' is a class of all pure science materials
whose subject is computer science.").
physics_material :=
pure_science_material
(subject => physics
,definition => "
'physics_material' is a class of all pure science materials whose
subject is physics.").
chemistry_material :=
pure_science_material
(subject => chemistry
,definition => "
'chemistry_material' is a class of all pure science materials whose
subject is chemistry.").
biology_material :=
pure_science_material
(subject => biology
,definition => "
'biology_material' is a class of all pure science materials whose
subject is biology.").
algebra_material :=
mathematics_material
(subject => algebra
,definition => "
'algebra_material' is a class of all mathematics materials whose
subject is algebra.").
analysis_material :=
mathematics_material
(subject => analysis
,definition => "
'analysis_material' is a class of all mathematics materials whose
subject is analysis.").
topology_material :=
mathematics_material
(subject => topology
,definition => "
'topology_material' is a class of all mathematics materials, whose
subject is topology.").
theory_of_computation_material :=
computer_science_material
(subject => theory_of_computation
,definition => "
'theory_of_computation_material' is a subclass of computer science and
mathematics materials. The area of theory of computer science
includes mathematical theory of computer sciences, automata theory,
and mathematical logic. Subject is theory of computation.").
theory_of_computation_material :=
mathematics_material
(subject => theory_of_computation).
artificial_intelligence_material :=
computer_science_material
(subject => artificial_intelligence
,definition => "
'artificial_intelligence_material' is a class of all A.I. materials.
The area of artificial intelligence includes the areas of knowledge
representation, search heuristics, natural language processing, machine
learning, expert system, automatic theorem proving, robotics, computer
vision, AI machine, parallel processing for AI, and AI programming
language. Subject is artificial intelligence.").
distributed_system_material :=
computer_science_material
(subject => distributed_system
,definition => "
'distributed_system_material is a subclass of computer science
materials. Subject is distributed system.").
computer_architecture_material :=
computer_science_material
(subject => computer_architecture
,definition => "
'computer_architecture_material' is a subclass of both computer science
and computer engineering materials. Subject is computer architecture.").
software_engineering_material :=
computer_science_material
(subject => software_engineering
,definition => "
'software_engineering_material' is a subclass of computer science
materials. Subject is software engineering").
parallel_processing_material :=
computer_science_material
(subject => parallel_processing
,definition => "
'parallel_processing_material' is a subclass of computer science
materials. Subject is parallel processing").
programming_language_material :=
computer_science_material
(subject => programming_languages
,definition => "
'programming_language_material' is a subclass of computer science
materials. Subject is programming languages").
vlsi_material :=
computer_science_material
(subject => vlsi
,definition => "
'vlsi_material' is a subclass of all both computer science and computer
engineering materials. Subject is VLSI.").
database_material :=
computer_science_material
(subject => database
,definition => "
'database_material' is a subclass of computer science materials.
Subject is database").
computer_network_material :=
computer_science_material
(subject => computer_network
,definition => "
'computer_network_material' is a subclass of both computer science and
computer engineering materials. Subject is computer network").
modeling_analysis_material :=
computer_science_material
(subject => modeling_analysis
,definition => "
'modeling_analysis_material' is a subclass of computer science
materials. Subject is modeling analysis").
medical_material :=
applied_science_material
(subject => medicine
,definition => "
'medical_material' is a subclass of applied science materials.
Subject is medicine.").
engineering_material :=
applied_science_material
(subject => engineering
,definition => "
'engineering_material' is a subclass of applied science materials.
Subject is engineering").
building_material :=
applied_science_material
(subject => building
,definition => "
'building_material' is a subclass of applied science materials.
Subject is building.").
medical_engineering_material :=
medical_material
(subject => medical_engineering
,definition => "
'medical_engineering_material' is a subclass of both medicine and
engineering materials. Subject is medical engineering.").
medical_engineering_material :=
engineering_material
(subject => medical_engineering).
electrical_engineering_material :=
engineering_material
(subject => electrical_engineering
,definition => "
'electrical_engineering_material' is an engineering material.
Subject is electrical engineering.").
civil_engineering_material :=
engineering_material
(subject => civil_engineering
,definition => "
'civil_engineering_material' is an engineering material.
Subject is civil engineering.").
petroleum_engineering_material :=
engineering_material
(subject => petroleum_engineering
,definition => "
'petroleum_engineering_material' is an engineering material.
Subject is petroleum engineering.").
computer_engineering_material :=
electrical_engineering_material
(subject => computer_engineering
,definition => "
'computer_engineering_material' is an electrical engineering material.
Subject is computer engineering").
computer_architecture_material :=
computer_engineering_material
(subject => computer_architecture).
vlsi_material :=
computer_engineering_material
(subject => vlsi).
computer_network_material :=
computer_engineering_material
(subject => computer_network).
music_material :=
art_material
(subject => music
,definition => "
'music_material' is an art material which is related to music.
The area of music includes music score, sound recording...
Subject is music.").
painting_material :=
art_material
(subject => painting
,definition => "
'painting_material' is an art material which is related to painting
Subject is painting.").
sculpture_material :=
art_material
(subject => sculpture
,definition => "
'sculpture_material' is an art material which is related to sculpture.
Subject is sculpture.").
architecture_material :=
art_material
(subject => architecture
,definition => "
'architecture_material' is an art material which is related to
architecture. Subject is architecture").
american_literature_material :=
literature_material
(subject => american_literature
,definition => "
'american_literature_material' is a literature material which is
related to american literature. Subject is american literature.").
german_literature_material :=
literature_material
(subject => german_literature
,definition => "
'german_literature_material' is a literature material which is related to
german literature. Subject is german literature.").
italian_literature_material :=
literature_material
(subject => italian_literature
,definition => "
'italian_literature_material' is a literature material which is related to
italian literature. Subject is italian literature.").
ancient_history_material :=
history_material
(subject => ancient_history
,definition => "
'ancient_history_material' is a history material which is related to
ancient history. Subject is ancient history").
europe_history_material :=
history_material
(subject => europe_history
,definition => "
'europe_history_material' is a history material which is related to
europe history. Subject is europe history").
asia_history_material :=
history_material
(subject => asia_history
,definition => "
'asia_history_material' is a history material which is related to
asia history. Subject is asia history").
america_history_material :=
history_material
(subject => america_history
,definition => "
'america_history_material' is a history material which is related to
america history. Subject is america history").
mathematical_logic_material :=
theory_of_computation_material
(subject => mathematical_logic
,definition => "
'mathematical_logic_material' is a both theory of computation and logic
material which is related to mathematical logic.
Subject is mathematical logic").
mathematical_logic_material :=
logic_material
(subject => mathematical_logic).
automata_material := theory_of_computation_material
(subject => automata
,definition => "
'automata_material' is a both theory of computation and structural system
material which is related to automata.
Subject is automata").
automata_material :=
structural_system_material
(subject => automata).
knowledge_representation_material :=
artificial_intelligence_material
(subject => knowledge_representation
,definition => "
'knowledge_representation_material' is an artificial intelligence material
which is related to knowledge representation.
Subject is knowledge representation").
search_heuristics_material :=
artificial_intelligence_material
(subject => search_heuristics
,definition => "
'search_heuristics_material' is an artificial intelligence material
which is related to search heuristics.
Subject is search heuristics").
natural_language_processing_material :=
computational_linguistics_material
(subject => natural_language_processing
,definition => "
'natural_language_processing_material' is a both computational linguistics
and artificial intelligence material which is related to natural language
processing. Subject is natural language processing").
natural_language_processing_material :=
artificial_intelligence_material
(subject => natural_language_processing).
machine_learning_material :=
artificial_intelligence_material
(subject => machine_learning
,definition => "
'machine_learning_material' is an artificial intelligence material
which is related to machine learning.
Subject is machine learning").
expert_system_material :=
artificial_intelligence_material
(subject => expert_system
,definition => "
'expert_system_material' is an artificial intelligence material
which is related to expert system.
Subject is expert system.").
automatic_theorem_proving_material :=
artificial_intelligence_material
(subject => automatic_theorem_proving
,definition => "
'automatic_theorem_proving_material' is an artificial intelligence
material which is related to automatic theorem proving.
Subject is automatic theorem proving").
robotics_material :=
artificial_intelligence_material
(subject => robotics
,definition => "
'robotics_material' is an artificial intelligence material which is
related to robotics. Subject is robotics").
computer_vision_material :=
artificial_intelligence_material
(subject => computer_vision
,definition => "
'computer_vision_material' is an artificial intelligence material
which is related to computer vision. Subject is computer vision").
ai_machine_material :=
artificial_intelligence_material
(subject => ai_machine
,definition => "
'ai_machine_material' is a both computer architecture and artificial
intelligence material which is related to AI machine.
Subject is AI machine").
ai_machine_material :=
computer_architecture_material
(subject => ai_machine).
parallel_processing_for_ai_material :=
artificial_intelligence_material
(subject => parallel_processing_for_ai
,definition => "
'parallel_processing_for_ai_material' is a both parallel processing and
artificial intelligence material which is related to parallel processing
for AI. Subject is parallel processing for AI").
parallel_processing_for_ai_material :=
parallel_processing_material
(subject => parallel_processing_for_ai).
ai_programming_language_material :=
artificial_intelligence_material
(subject => ai_programming_language
,definition => "
'ai_programming_language_material' is a both programming language and
artificial intelligence material which is related to AI programming
language. Subject is AI programming language").
ai_programming_language_material :=
programming_language_material
(subject => ai_programming_language).
medical_expert_system_material :=
expert_system_material
(subject => medical_expert_system
,definition => "
'medical_expert_material' is a both expert system and medical engineering
material which is related to medical expert system.
Subject is medical expert system.").
medical_expert_system_material :=
medical_engineering_material(subject => medical_expert_system).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% Of course, there might be lots of subjects which are not %
% listed above. We can generate a new class by combining any %
% of the class listed above with any class in physical %
% description hierarchy. For example, we can define new %
% classes as in the next section. %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% New classes generated by combining the classes in subject %
% hierarchy and the classes from the hierarchy by physical %
% description. %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
pure_science_periodical :=
periodical
(definition => "
'pure_science_periodical' is a periodical whose subject is pure science").
pure_science_periodical <| pure_science_material.
computer_science_periodical :=
pure_science_periodical
(definition => "
'computer_science_periodical' is a pure science periodical whose subject
is computer science").
computer_science_periodical <| computer_science_material.
artificial_intelligence_periodical :=
artficial_intelligence_material
(definition => "
'artificial_intelligence_periodical' is a computer science periodical
whose subject is artificial intelligence.").
artificial_intelligence_periodical <| computer_science_periodical.
monthly_computer_science_journal :=
computer_science_periodical
(definition => "
'monthly_computer_science_journal' is a computer science journal which is
issued every month.").
monthly_computer_science_journal <| monthly_academic_journal.
monthly_artificial_intelligence_journal :=
monthly_computer_science_journal
(definition => "
'monthly_artificial_intelligence_journal' is an artificial intelligence
journal which is issued every month.").
monthly_artificial_intelligence_journal <| artificial_intelligence_periodical.
computer_science_transactions :=
computer_science_periodical
(definition => "
'computer_science_transactions' is a computer science periodical which
is a transaction of a computer science society.").
computer_science_transactions <| transactions.
artificial_intelligence_transactions :=
artificial_intelligence_periodical
(definition => "
'artificial_intelligence_transactions' is an artificial intelligence
periodical which is a transaction of artificial intelligence societies.").
artificial_intelligence_transactions <| computer_science_transactions.
monthly_computer_science_transactions :=
monthly_transactions
(definition => "
'monthly_computer_science_transactions' is a computer science transactions
which is issued every month.").
monthly_computer_science_transactions <| computer_science_transactions.
monthly_artificial_intelligence_transactions :=
monthly_computer_science_transactions
(definition => "
'monthly_artificial_intelligence_transactions' is an artificial
intelligence transactions which is issued every month.").
monthly_artificial_intelligence_transactions <|
artificial_intelligence_transactions.
quarterly_computer_science_transactions :=
quarterly_transactions
(definition => "
'quarterly_computer_science_transactions' is a computer science
transactions which is issued every three months.").
quarterly_computer_science_transactions <| computer_science_transactions.
quarterly_artificial_intelligence_transactions :=
quarterly_computer_science_transactions
(definition => "
'quarterly_artificial_intelligence_transactions' is an artificial
intelligence transactions which is issued every three month.").
quarterly_artificial_intelligence_transactions <|
artificial_intelligence_transactions.
computer_science_proceedings :=
computer_science_periodical
(definition => "
'computer_science_proceedings' is a computer science periodical which is
issued as a computer science conference proceedings.").
computer_science_proceedings <| proceedings.
yearly_computer_science_proceedings :=
computer_science_proceedings
(definition => "
'yearly_computer_science_proceedings' is a computer science proceedings
which is issued every year.").
yearly_computer_science_proceedings <| yearly_proceedings.
artificial_intelligence_proceedings :=
artificial_intelligence_periodical
(definition => "
'artificial_intelligence_proceedings' is an artificial intelligence
periodical which is issued as a AI conference proceedings.").
artificial_intelligence_proceedings <| computer_science_proceedings.
yearly_artificial_intelligence_proceedings :=
yearly_computer_science_proceedings
(definition => "
'yearly_artificial_intelligence_proceedings' is an artificial
intelligence proceedings which is issued every year.").
yearly_artificial_intelligence_proceedings <|
artificial_intelligence_proceedings.
computer_science_encyclopedia :=
computer_science_material
(definition => "
'computer_science_encyclopedia' is a subject encyclopedia whose subject
is computer science.").
computer_science_encyclopedia <| subject_encyclopedia.
multi_volume_encyclopedia :=
encyclopedia
(definition => "
'multi_volume_encyclopedia' is an encyclopedia which consists of several
volumes.").
multi_volume_encyclopedia <| multi_volume_books.
multi_volume_subject_encyclopedia :=
multi_volume_encyclopedia
(definition => "
'multi_volume_subject_encyclopedia' is a subject encyclopedia which
consists of several volumes.").
multi_volume_subject_encyclopedia <| subject_encyclopedia.
multi_volume_general_encyclopedia :=
multi_volume_encyclopedia
(definition => "
'multi_volume_general_encyclopedia' is a general encyclopedia which
consists of several volumes.").
multi_volume_general_encyclopedia <| general_encyclopedia.
multi_volume_computer_science_encyclopedia :=
computer_science_encyclopedia
(definition => "
'multi_volume_computer_science_encyclopedia' is a computer science
encyclopedia which consists of several volumes.").
multi_volume_computer_science_encyclopedia <| multi_volume_subject_encyclopedia.
single_volume_encyclopedia :=
encyclopedia
(definition => "
'single_volume_encyclopedia' is an encyclopedia which consists of single
volume.").
single_volume_encyclopedia <| single_volume_books.
single_volume_pure_science_books :=
single_volume_books
(definition => "
'single_volume_pure_science_books' is a single volume books whose
subject is pure science.").
single_volume_pure_science_books <| pure_science_material.
single_volume_computer_science_books :=
computer_science_material
(definition => "
'single_volume_computer_science_books' is a computer science material
written in single volume books.").
single_volume_computer_science_books <| single_volume_pure_science_books.
single_volume_artificial_intelligence_books :=
single_volume_computer_science_books
(definition => "
'single_volume_artificial_intelligence_books' is an artificial
intelligence material written in single volume books.").
single_volume_artificial_intelligence_books <| artificial_intelligence_material.
single_volume_expert_system_books :=
single_volume_artificial_intelligence_books
(definition => "
'single_volume_expert_system_books' is an expert system
material written in single volume books.").
single_volume_expert_system_books <| expert_system_material.
single_volume_medical_expert_system_books :=
medical_expert_system_material
(definition => "
'single_volume_medical_expert_system_books' is a medical expert system
material written in single volume books.").
single_volume_medical_expert_system_books <| single_volume_expert_system_books.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% Each class in this hierarchy is not a class of library %
% items. Each class represents a conceptual term which is %
% used as a value of the attribute, 'subject', of the class %
% 'libarary_material'. This hierarchy make it possible to %
% succeed when we try to unify two terms which have some %
% relationships using generalized unification algorithm in %
% LOGIN. %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
philosophy <| subjects.
religion <| subjects.
social_science <| subjects.
language <| subjects.
pure_science <| subjects.
applied_science <| subjects.
art <| subjects.
literature <| subjects.
history <| subjects.
metaphysics <| philosophy.
psychology <| philosophy.
logic <| philosophy.
ethics <| philosophy.
physiological_psychology <| psychology.
intelligent_intellect <| psychology.
induction <| logic.
deduction <| logic.
analogy <| logic.
natural_religion <| religion.
christian_theology <| religion.
other_religion <| religion.
the_statistics <| social_science.
political_science <| social_science.
economics <| social_science.
law <| social_science.
linguistics <| language.
english <| language.
german <| language.
french <| language.
computational_linguistics <| linguistics.
etymology <| linguistics.
phonology <| linguistics.
structural_system <| linguistics.
mathematics <| pure_science.
computer_science <| pure_science.
physics <| pure_science.
chemistry <| pure_science.
biology <| pure_science.
algebra <| mathematics.
analysis <| mathematics.
topology <| mathematics.
theory_of_computation <| computer_science.
theory_of_computation <| mathematics.
artificial_intelligence <| computer_science.
distributed_system <| computer_science.
computer_architecture <| computer_science.
software_engineering <| computer_science.
parallel_processing <| computer_science.
programming_language <| computer_science.
vlsi <| computer_science.
database <| computer_science.
computer_network <| computer_science.
modeling_analysis <| computer_science.
medicine <| applied_science.
engineering <| applied_science.
building <| applied_science.
medical_engineering <| medicine.
medical_engineering <| engineering.
electrical_engineering <| engineering.
civil_engineering <| engineering.
petroleum_engineering <| engineering.
computer_engineering <| electrical_engineering.
computer_architecture <| computer_engineering.
vlsi <| computer_engineering.
computer_network <| computer_egineering.
music <| art.
painting <| art.
sculpture <| art.
architecture <| art.
american_literature <| literature.
german_literature <| literature.
italian_literature <| literature.
ancient_history <| history.
europe_history <| history.
asia_history <| history.
america_history <| history.
mathematical_logic <| theory_of_computation.
mathematical_logic <| logic.
automata <| theory_of_computation.
automata <| structural_system.
knowledge_representation <| artificial_intelligence.
search_heuristics <| artificial_intelligence.
natural_language_processing <| computational_linguistics.
natural_language_processing <| artificial_intelligence.
machine_learning <| artificial_intelligence.
expert_system <| artificial_intelligence.
automatic_theorem_proving <| artificial_intelligence.
robotics <| artificial_intelligence.
computer_vision <| artificial_intelligence.
ai_machine <| artificial_intelligence.
ai_machine <| computer_architecture.
parallel_processing_for_ai <| artificial_intelligence.
parallel_processing_for_ai <| parallel_processing.
ai_programming_language <| artificial_intelligence.
ai_programming_language <| programming_language.
medical_expert_system <| expert_system.
medical_expert_system <| medical_engineering.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% Hierarchy of Library Users %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
library_user :=
@(ss_number => ss_num
,name => full_name
,address => place
,fine => object_state_key % a key value to the record of fine
,definition => "
'library_user' is an authorized person to use a library"
,attribute => "
'library_user' has three attributes, 'ss_number', 'name', and
'address'. ").
professor_user :=
library_user
(status => professor).
staff_user :=
library_user
(status => staff).
student_user :=
library_user
(status => student).
graduate_student_user :=
student
(status => graduate_student).
undergraduate_student_user := student(status => undergraduate_student).
graduate_student <| student.
undergraduate_student <| student.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% END OF BABEL CLASSES %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%