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1987-10-18
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File README.DOC. 19-Oct-87
This diskette contains text and code from the report "Artificial
Intelligence Programming in SNOBOL4," by Michael G. Shafto. The material
has been compressed into an archive file to save space.
************************ IMPORTANT NOTE *****************************
The original SNOBOL4 code contained in the report was designed to run
under mainframe (360/370) Spitbol. These programs have been converted
to SNOBOL4+ and Macro Spitbol, and appear in both *.SNO and *.SPT versions
on this disk. Spitbol files must be converted to line-feed terminated
records to operate under the Un*x version of Spitbol-68K.
The SNOLISPIST package is divided into two parts -- a collection of "core"
functions, and a library of functions that are loaded on demand. The
loader in the core package (SNOCORE.INC or SPITCORE.SPT) has been modified
from the version in the report. In particular an auxiliary file,
SNOLIB.IDX or SPITLIB.IDX, is used to provide random access to the library
package (SNOLIB.INC or SPITLIB.SPT). In addition, some of the peculiarities
of Macro Spitbol required further adjustments to the two files. A utility
program, BUILDLIB.SNO or BUILDLIB.SPT, is provided to build the index file,
and should be used anytime the library file is altered.
The programming techniques used in these files are worth studying -- they
illustrate many unusual ways to use the language. However, it is very
clear that some of these programs run too slowly under SNOBOL4+ to be
useful as anything other than a learning tool. Spitbol and 32-bit
machines, such as the 68000 are required for peak performance.
*************************************************************************
The following files should be present:
arc.exe archiving utility. For info, type "a:arc"
readme.doc this file
shafto.arc archived files and documents, consisting of:
atn.in sample input for augmented transition network [5k]
atn.sno augmented transition network [13k]
atn.spt Spitbol version of the above [13k]
buildlib.bat DOS batch file to build SNOLISPIST index file [1k]
buildlib.sno program to build index file [1k]
buildlib.spt Spitbol version of the above [1k]
ending.in sample data for word ending program [1k]
ending.sno word ending program [4k]
ending.spt Spitbol version of the above [4k]
hsort.in sample data for hsort program [1k]
hsort.sno Hoare quicksort [2k]
hsort.spt Spitbol version of the above [2k]
kalah.sno African board game [31k] (newly commented)
kalah.spt Spitbol version of the above [31k]
readme.doc this file [6k]
report1.doc text of Shafto report (part 1) [224k]
report2.doc text of Shafto report (part 2) [148k]
sir.in sample data for SIR program [1k]
sir.sno semantic information retrieval program [23k]
sir.spt Spitbol version of the above [23k]
snocore.inc SNOBOL4+ core functions of SNOLISPIST [21k]
snolib.idx SNOBOL4+ index to library functions [1k]
snolib.inc SNOBOL4+ library functions of SNOLISPIST [45k]
spitcore.spt Spitbol core functions of SNOLISPIST [24k]
spitlib.spt Spitbol library functions of SNOLISPIST [44k]
test.in sample data for TEST program [1k]
test.sno test program for SNOLISPIST functions [18k]
test.spt Spitbol version of the above [18k]
wang.in sample data for Wang's theorem prover [1k]
wang.sno Wang's algorithm for theorem proving [3k]
wang.spt Spitbol version of the above [3k]
The figures in brackets indicate the approximate amount of disk space
needed for the unloaded files. The files you will be most interested in
are REPORT1.DOC amd REPORT2.DOC, which are the text of Shafto's report.
The report and any or all of the files can be expanded to other floppies
or to your hard disk.
Hard disk systems:
------------------
Create the hard disk directory into which the files should be expanded, and
make it your current directory. Insert the source disk in drive A and enter
the following command:
A:ARC X A:SHAFTO
Floppy disk systems:
--------------------
Format two 360k floppy disks, and place one of them in drive B and the source
disk in drive A. Enter the following commands:
B:
A:ARC X A:SHAFTO REPORT1.DOC
Remove the first disk from drive B, insert the second blank disk, and enter:
A:ARC X A:SHAFTO REPORT2.DOC *.SNO *.INC *.BAT *.IN *.IDX
A:
(If you are interested in the Spitbol versions, use *.SPT instead of *.SNO
and *.INC).
Printing the report:
--------------------
The files REPORT1.DOC and REPORT2.DOC are formatted for a 10-pitch printer
font (such as Courier), 80-column page width, and 66 lines per page. Place
the print head on the perforation between sheets, and copy the two files
to the printer:
COPY REPORT1.DOC PRN
COPY REPORT2.DOC PRN
REPORT1.DOC is 86 pages long, and is the main section of the report.
REPORT2.DOC is 86 pages long, and consists of all of the appendices.
*************************************************************************
The material on this diskette may be distributed freely and without
restrictions of any kind.
The report is distributed with the kind permission of Michael G. Shafto. A
paper copy of the report was OCR scanned at Arizona State University by
Mark Olsen. The scanned report was extensively edited and corrected by
Mark Emmer of Catspaw. In addition, Martin Rice of the University of
Tennessee typed in the SNOLISPIST library, which was used as a cross-check
of the OCR-scanned material. Thanks to all who assisted.
Catspaw, Inc.
P.O. Box 1123
Salida, Colorado 81201
(Voice) 303/539-3884
(BBS) 303/539-4830