Introduction - If you have any usage issues, please Google them yourself
Both C4.5 and C5.0 can produce classifiers expressed either as decision trees or rulesets. In many applications, rulesets are preferred because they are simpler and easier to understand than decision trees, but C4.5 s ruleset methods are slow and memory-hungry. C5.0 embodies new algorithms for generating rulesets, and the improvement is dramatic.