Data Mining Assignment 1

Experiments with C4.5

• Download at least three databases from the UCI Machine Learning Repository (http://www1.ics.uci.edu/~mlearn/MLSummary.html) and run C4.5 on each of them. If necessary, format the .names file and create a .test file for each database.
• Submit a report in plain text by e-mail with the following information:
  1. The three database names, and the number of files for each database you have downloaded from the UCI Machine Learning Repository.
  2. Your predictive accuracy results of C4.5 on one of these databases with different combinations of the following switches: -g, -m, -c, and -s. You should try at least two different values for each of -m and -c.
  3. What is the best predictive accuracy from the above experiments and what are the switch settings for achieving the best predictive accuracy? Also, how many examples do you have in each of the training and testing files? Please note that the best accuracy might not need every switch to be present.