1 | ******************************************************************************** |
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2 | * * |
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3 | * Copyright J.R. Quinlan, 1987, 1988, 1989, 1990, 1991, 1992. This software * |
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4 | * may not be distributed in any form without permission of the copyright * |
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5 | * holder. * |
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6 | * * |
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7 | ******************************************************************************** |
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8 | |
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9 | |
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10 | PLEASE READ THE FILE CALLED "LEGAL". ALSO, NOTE THAT C4.5 IS NOT SUPPORTED. |
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11 | |
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12 | |
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13 | The C4.5 induction system |
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14 | ------------------------- |
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15 | |
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16 | The C4.5 system consists of four principal programs: |
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17 | |
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18 | 1) the decision tree generator ('c4.5'), |
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19 | 2) the production rule generator ('c4.5rules'), |
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20 | 3) the decision tree interpreter ('consult'), and |
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21 | 4) the production rule interpreter ('consultr'). |
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22 | |
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23 | This release also contains stuff that may be helpful in running experiments: |
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24 | |
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25 | 5) a csh shell script for cross-validation ('xval.sh'), and |
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26 | 6) two ancillary programs ('xval-prep' and 'average'). |
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27 | |
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28 | There is a Unix-style (brief) manual entry for the main programs and for |
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29 | their verbose output mode. A better guide to using the system is provided in |
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30 | my book, 'C4.5: Programs for Machine Learning', Morgan Kaufmann 1992. |
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31 | |
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32 | [Note: changes since the book was published are recorded in the file |
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33 | Modifications in the Src directory.] |
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34 | |
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35 | Installation |
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36 | ------------ |
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37 | |
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38 | The system has been targeted to Berkeley BSD4.3. Some other environments |
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39 | (e.g. SystemV) may require the use of additional libraries etc; if you |
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40 | have any trouble compiling the system, look at the comments in the Makefile. |
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41 | In particular, if you are running in an environment other than Berkeley BSD4.3 |
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42 | you may need to search additional libraries, e.g. for the random number |
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43 | generator 'random'. This requires the addition of loader instructions of the |
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44 | form -l* after '-lm'; you might try '-lbsd'; if this doesn't work, consult |
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45 | your local Unix guru. |
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46 | |
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47 | To create the executable binary files, go into the 'Src' directory by typing: |
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48 | |
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49 | cd Src |
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50 | |
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51 | and type: |
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52 | |
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53 | make all |
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54 | |
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55 | This will create the binary files 'c4.5', 'c4.5rules', 'consult', 'consultr', |
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56 | 'xval-prep' and 'average'. These, together with the shell script, can be |
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57 | moved into your installation's directory for local software, e.g. |
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58 | '/usr/local/bin' by typing: |
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59 | |
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60 | mv c4.5 c4.5rules consult consultr xval-prep average xval.sh /usr/local/bin |
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61 | |
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62 | The object files created during compilation may be removed to save space by |
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63 | typing: |
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64 | |
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65 | rm *.o |
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66 | |
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67 | In the 'Doc' directory, there is a manual entry file for each of the programs, |
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68 | as well as the files 'verbose.1' and 'verbrules.1' which explain the verbose |
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69 | output produced by 'c4.5' and 'c4.5rules' respectively. These can be installed |
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70 | in your local manual by moving them to your installation's manual directory for |
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71 | volume 1, usually '/usr/man/man1' by typing, for instance: |
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72 | |
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73 | cd ../Doc |
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74 | mv *.1 /usr/man/man1 |
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75 | |
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76 | (You may need superuser privileges to put files in this directory.) |
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77 | |
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78 | Examples |
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79 | -------- |
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80 | |
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81 | The directory 'Data' contains some sample datasets. Many interesting data |
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82 | collections are maintained by the University of California, Irvine, in a |
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83 | data repository. For more information on how to access files from this |
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84 | repository, send email to |
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85 | |
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86 | ml-repository@ics.uci.edu |
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