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A VERY SIMPLE CHART PARSER
Peter Ross
Dept. of Artificial Intelligence
80 South Bridge
Edinburgh EH1 1HN
Scotland
031-225-7774 ext. 247
The chart parser itself can be found in "chart.pro". It was originally
written for C-Prolog, but has since been tried with a variety of other
versions. It consumes a LOT of stack space because it keeps the chart
itself as an enormous list and the agenda as a pair of difference lists.
Documentation about its capabilities, implementation and use can be found
in the file "chart.txt". A simple test rig (included in "chart.pro") is
also documented, and two very simple example grammars can be found in
"test01.pro" and "test02.pro".
You may need to mess about with the program, or with the configuration
of available memory for your own Prolog, to get it to run on your
machine, particularly if its a Pc-type machine. I haven't tried it on
such a machine, for want of a suitable Prolog that makes uses of the
full physical memory - some kind of virtual memory may also be useful.
A cross-reference listing of the program can be found in "chart.xrf".
Sorry, the cross-referencer is not mine to give away! It is, however,
entirely written in Prolog...