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- == WAIS
-
- WAIS
-
-
-
- What is WAIS
-
- WAIS, Wide Area Information Server, are databases containing
- mostly text-based documents, (although WAIS documents may contain
- sound, pictures or video as well). WAIS databases are referred to
- as sources. The databases may be organized in different ways,
- using various database systems, but the user is not required to
- learn the query languages of the different databases. The WAIS
- client uses natural language queries to find relevant documents
- and the result of a query is a set of documents which contain the
- words of the query. WAIS databases are available on topics rang-
- ing from Agriculture to Social Science.
-
-
- Who can use WAIS
-
- You must be on the international TCP/IP network (the Internet) in
- order to use a WAIS client on your computer to access WAIS sourc-
- es.
-
- If you have e-mail access only, or if you are not on the Inter-
- net, you can still exploit some of the potential of WAIS. An
- interface which gives e-mail access to WAIS databases is avail-
- able at the address: WAISmail@quake.think.com (see E-mail access
- section under Using WAIS below).
-
-
- How to get to WAIS
-
- There are many WAIS servers throughout the network. A directory-
- of-servers database is available at several sites, which can be
- queried to find out what databases are available on a particular
- subject. The directory-of-servers database is also available via
- anonymous FTP from ftp.wais.com in the directory /pub/directory-
- of-servers in the distribution wais-sources.tar.Z as file
- directory-of-servers.scr.
-
- If you do not have access to a WAIS client, at least two demon-
- stration sites are available to allow you to get acquainted with
- WAIS. You can telnet to:
-
- +---------------------------------------------------------------+
- | |
- | quake.think.com (login: wais) |
- | sunsite.unc.edu (login: swais) |
- | |
- +---------------------------------------------------------------+
-
- The two demonstration sites above run swais (Screen WAIS), a sim-
- ple WAIS client for Unix.
-
-
- Using WAIS
-
- There are many freely available WAIS client programs for various
- operating systems (Unix, VMS, MVS, MS-DOS, OS/2 and Macintosh)
- and for specific environments (e.g. X-Windows, Openlook, NeXT,
- and MS-Windows). See the list of freely available client soft-
- ware in Appendix A.
-
- The client interface differs slightly on different platforms, but
- the queries are performed in the same way whatever interface is
- in use.
-
- * Step 1: The user selects a set of databases to be searched.
-
- * Step 2: The user formulates a query consisting of keywords to
- be searched for.
-
- * Step 3: When the query is run, WAIS asks for information from
- each selected database.
-
- * Step 4: Headlines of documents satisfying the query are dis-
- played. The selected documents contain the requested words
- and phrases. Selected documents are ranked according to the
- number of matches.
-
- * Step 5: To retrieve a document, the user simply selects it
- from the resulting list. The WAIS client retrieves the docu-
- ment and displays its contents on the screen.
-
- * Step 6: If not enough documents are found, the user can state
- the question differently or can select a set of documents.
-
- * Step 7: A further search will look for documents which have a
- large number of words in common with the selected documents.
-
- E-mail access:
-
- You can query WAIS databases and retrieve documents by sending
- commands in the body part of an e-mail message to WAIS-
- mail@quake.think.com. The Subject: line is ignored. The impor-
- tant commands are given below (a vertical bar (|) indicates a
- choice of parameters):
-
- help to get the help file
-
- maxres number
- to set the maximum number of results (i.e. docu-
- ments) to be returned.
-
- search source-name | "source-name1 source-name2 ..." keywords
- where:
-
- source-name
- is a source name as found in the
- directory-of-servers (with or without the
- .src ending). Use double-quotes (") to
- group several sources to be searched.
-
- keywords are the words you would normally type into
- a query.
-
- You may specify several search requests in a mail
- message. If you don't know what sources you can
- search, just try anything. If the source name is not
- recognised, you will be given a list of sources.
-
- retrieve docid
- retrieves a document from a database. docid is a
- Document IDentifier as returned by a search. You may
- put more than one retrieval request in a mail mes-
- sage, but you must leave a blank line between
- requests. The docid must be written exactly as
- returned by a search request, including any spaces.
- You can retrieve non-text documents as well as text.
- If the document is of type TEXT or WSRC you will get
- the result directly. Other types will be UUENCODED
- before being transmitted.
-
- DocID: docid same as retrieve. This form is identical to the form
- which is returned by a search request, which makes
- it easy to use the reply mail function to retrieve
- results.
-
-
- Examples
-
- When you log in to the demonstration site at quake.think.com, you
- have immediate access to the directory-of-servers database via
- the swais client software. To find recipes using papaya, you
- would select the recipes database and give papaya as the keyword.
- Here are the results of the search:
-
- -----------------------------------------------------------------
-
- # Score Source Title Lines
- 001: 1000 (recipes) arielle@ta Re: Dawn's Muffins, Pt III 339
- 002: 1000 (recipes) arielle@ta Re: Muffins 3 632
- 003: 1000 (recipes) arielle@ta Re: Pineapple 678
- 004: 750 (recipes) arielle@ta Re: Pork and Papaya Salad 33
- 005: 750 (recipes) arielle@ta Re: Bread 681
- 006: 500 (recipes) roder@cco. Re: NONFAT BAKERY COLLECTION 423
- 007: 500 (recipes) shiva@hoss Re: Juice Recipes 65
- 008: 250 (recipes) arielle@ta Re: Prawn Salad 49
- 009: 250 (recipes) arielle@ta Re: COLLECTION: Lots of Avoca 447
- 010: 250 (recipes) mecca@acsu Re: REQUEST: blender-made fru 29
- 011: 250 (recipes) Ann.Adamci Re: Re: REQUEST: blender-made 38
- 012: 250 (recipes) patth@Pani Re: Re: REQUEST: blender-made 49
- 013: 250 (recipes) arielle@ta Re: Avocados 459
- 014: 250 (recipes) red_trek@d Re: VEGAN: red beans and rice 78
-
- -----------------------------------------------------------------
-
- You can then select any of the above documents for viewing. Here
- is the Pork and Papaya Salad recipe:
-
- -----------------------------------------------------------------
-
- Newsgroups: rec.food.recipes
- From: arielle@taronga.com (Stephanie da Silva)
- Subject: Pork and Papaya Salad
- Message-ID: <5BBP2SB@taronga.com>
- Date: Mon, 29 Mar 1993 06:51:47 GMT
- Lines: 23
-
- 1/4 cup dried currants
- 1/2 cup balsamic vinegar
- 1/4 cup walnut oil
- 1/4 cup chicken broth
- 1 tablespoon honey
- 1/4 teaspoon ground cinnamon
- 1 pound cooked boneless pork loin roast
- 1 head Belgian endive
- Bibb lettuce leaves
- 2 papayas, seeded, peeled and sliced lengthwise
- 2 avocados, seeded, peeled and sliced lengthwise
- 1/4 cup broken walnut pieces
-
- In a small bowl pour enough boiling water over currants to cover.
- Let stand 5 minutes; drain. For dressing, in a screw-top jar
- combine vinegar, oil, chicken broth, honey, and cinnamon. Cover;
- shake well. Trim fat from pork; slice thinly. Separate leaves of
- Belgian endive. Line 6 salad plates with lettuce leaves. Arrange
- pork, endive, papaya, and avocado on plates. Sprinkle with
- currants and walnuts. Drizzle dressing over salads.
-
- Stephanie da Silva arielle@taronga.com
-
- -----------------------------------------------------------------
-
- If you give more than one keyword, then all documents containing
- any of the keywords will be listed.
-
-
- Learning more about WAIS
-
- A bibliography of documents, services and sources for WAIS is
- maintained by Barbara Lincoln Brooks of WAIS Inc. The
- bibliography is available from ftp.wais.com in the directory
- /pub/wais-inc-doc along with many other WAIS documents. WAIS Inc.
- provides commercial WAIS software and services. The support for
- the freely available version, called freeWAIS, is assumed by the
- Clearinghouse for Network Information Discovery and Retrieval
- (CNIDR).
-
- For information on freeWAIS software contact freewais@cnidr.org
-
- There are currently four main FTP sites for WAIS documentation
- and software:
-
- ftp.cnidr.org ftp.wais.com
- quake.think.com sunsite.unc.edu
-
- Mailing list: wais-discussion@wais.com
- To subscribe send a mail to wais-discussion-request@wais.com
-
- Usenet newsgroup: comp.infosystems.wais
-
- WAIS was developed at Thinking Machines Corporation.
-
-
-
- .
-