New in Release 2.07

64-bit Windows support

This release includes 64-bit versions of See5 and See5X (the batch executable). These versions allow the use of more than 2GB of memory, as required by some extremely large data mining tasks.

The 32-bit release of See5 will run under either 32-bit or 64-bit Windows, so there is no need to change unless your tasks may use more than 2GB of memory. The 64-bit version of See5 will run only under 64-bit Windows Xp, Windows Vista, or Windows 7.

The network version of See5 includes both 32-bit and 64-bit versions for installation on client PCs. A client PC running 64-bit Windows Xp/Vista/7 can install and use the 64-bit version, even if the server runs 32-bit Windows.

Linux C5.0 continues to be available in both 32-bit and 64-bit versions.

Enhanced multi-threading

Additional sections of See5/C5.0 have been multi-threaded. This can result in speed improvements when the application has many discrete attributes, especially with the discrete value subset option.

Confidence of ruleset predictions

Calculation of the confidence of a ruleset prediction has been altered so that it more accurately reflects the ruleset's performance on unseen data. Previous releases often showed low confidence for ruleset predictions even when those predictions were quite accurate.

This affects the output from the public code to read and interpret See5/C5.0 ruleset classifiers, and also impacts results with boosted rulesets.

Small changes to pruning algorithms

The pruning algorithms have been altered slightly to correct a potential problem. For most applications this should not affect the final classifier; in some cases, the tree or ruleset will be larger or smaller, but predictive accuracy should be similar.

Bug fix (June 2010)

A bug in the ruleset interpreter was fixed. This bug could cause See5/C5.0 to crash, or to give incomplete results with the cross-reference facility.

We recommend that all users who have installed 2.07 (including the demonstration version) should download the updated release.

Click here for information on updates in previous releases.

For Licensees Only:

Licensees who purchased See5/C5.0 since November 2008 are welcome to upgrade to Release 2.07.

Click the appropriate link(s) below to download Release 2.07. You will be asked to re-enter your licence ID before using the system. If you use the source code for reading and interpreting See5/C5.0 classifiers, you should also download the latest version.

C5.0 (Linux):

See5 (Windows 2000/Xp/Vista/7):

Either: source code for reading/interpreting classifiers

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