Università di Pisa
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Efficient C4.5

Ruggieri, Salvatore (2000) Efficient C4.5. Technical Report del Dipartimento di Informatica . Università di Pisa, Pisa, IT.

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    We present an analytic evaluation of the run-time behavior of the C4.5 algorithm which highlights some efficiency improvements. We have implemented a more efficient version of the algorithm, called EC4.5, that improves on C4.5 by adopting the best among three strategies at each node construction. The first strategy uses a binary search of thresholds instead of the linear search of C4.5. The second strategy adopts a counting sort method instead of the quicksort of C4.5. The third strategy uses a main-memory version of the RainForest algorithm for constructing decision trees. Our implementation computes the same decision trees as C4.5 with a performance gain of up to 5 times.

    Item Type: Book
    Uncontrolled Keywords: C4.5, Decision Trees Induction Algorithms, Supervised Machine Learning, Data Mining
    Subjects: Area01 - Scienze matematiche e informatiche > INF/01 - Informatica
    Divisions: Dipartimenti (until 2012) > DIPARTIMENTO DI INFORMATICA
    Depositing User: dott.ssa Sandra Faita
    Date Deposited: 27 Jan 2015 09:54
    Last Modified: 27 Jan 2015 09:54
    URI: http://eprints.adm.unipi.it/id/eprint/2026

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