*********************************************************************************									       **  Copyright J.R. Quinlan, 1987, 1988, 1989, 1990, 1991, 1992.  This software  **  may not be distributed in any form without permission of the copyright      **  holder.								       **									       *********************************************************************************PLEASE READ THE FILE CALLED "LEGAL".  ALSO, NOTE THAT C4.5 IS NOT SUPPORTED.The C4.5 induction system-------------------------The C4.5 system consists of four principal programs:	1)  the decision tree generator ('c4.5'),	2)  the production rule generator ('c4.5rules'),	3)  the decision tree interpreter ('consult'), and	4)  the production rule interpreter ('consultr').This release also contains stuff that may be helpful in running experiments:	5)  a csh shell script for cross-validation ('xval.sh'), and	6)  two ancillary programs ('xval-prep' and 'average').There is a Unix-style (brief) manual entry for the main programs and fortheir verbose output mode.  A better guide to using the system is provided inmy book, 'C4.5: Programs for Machine Learning', Morgan Kaufmann 1992.[Note: changes since the book was published are recorded in the fileModifications in the Src directory.]Installation------------The system has been targeted to Berkeley BSD4.3.  Some other environments(e.g. SystemV) may require the use of additional libraries etc; if youhave any trouble compiling the system, look at the comments in the Makefile.In particular, if you are running in an environment other than Berkeley BSD4.3you may need to search additional libraries, e.g. for the random numbergenerator 'random'.  This requires the addition of loader instructions of theform -l* after '-lm'; you might try '-lbsd'; if this doesn't work, consultyour local Unix guru.To create the executable binary files, go into the 'Src' directory by typing:	cd Srcand type:	make allThis will create the binary files 'c4.5', 'c4.5rules', 'consult', 'consultr','xval-prep' and 'average'.  These, together with the shell script, can bemoved into your installation's directory for local software, e.g.'/usr/local/bin' by typing:	mv c4.5 c4.5rules consult consultr xval-prep average xval.sh /usr/local/binThe object files created during compilation may be removed to save space bytyping:	rm *.oIn the 'Doc' directory, there is a manual entry file for each of the programs,as well as the files 'verbose.1' and 'verbrules.1' which explain the verboseoutput produced by 'c4.5' and 'c4.5rules' respectively.  These can be installedin your local manual by moving them to your installation's manual directory forvolume 1, usually '/usr/man/man1' by typing, for instance:	cd ../Doc	mv *.1 /usr/man/man1(You may need superuser privileges to put files in this directory.)Examples--------The directory 'Data' contains some sample datasets.  Many interesting datacollections are maintained by the University of California, Irvine, in adata repository.  For more information on how to access files from thisrepository, send email to	ml-repository@ics.uci.edu