This directory contains various programs and text files relating to Machine Learning. The subdirectories contain the following: (1) The subdirectory "ml-course" contains information and homeworks for a graduate course in Machine Learning taught by myself at the University of Texas at Austin. These homeworks use various "miniatures" of various machine learning systems written in Common Lisp. (2) The subdirectory "ml-code" has the Common Lisp code corresponding to the assignments for the course outlined in "ml-course". Most of the programs are inductive learning systems that use the same data format. Some data files are also included in the directory. This software is continually evolving and all of the systems are no longer necessarily compatible with each other and/or the assignments in "ml-course." (3) The subdirectory "ml-progs" contains more "research-level" versions of inductive classification algorithms and software for automated experiments that generate learning curves that compare several systems. The only documentation currently provided is the (sometimes sparse) comments that appear in the files. (4) The sub directory "papers" contains publications produced by our research group. This includes papers presented at past conferences as well as current work submitted for publication. Raymond J. Mooney Assistant Professor Department of Computer Sciences University of Texas at Austin LEGALITIES: Unfortunately, we live in an increasingly litigious society. The following legalisms apply to all software under this directory: Copyright 1991, by Raymond J. Mooney Permission to use this software is granted subject to the following restrictions and understandings: 1. This material is for educational and research purposes only. 2. Raymond J. Mooney has provided this software AS IS. Raymond J. Mooney has made no warranty or representation that the operation of this software will be error-free, and he is under no obligation to provide any services, by way of maintenance, update, or otherwise. 3. Any user of such software agrees to indemnify and hold harmless Raymond J. Mooney and The University of Texas from all claims arising out of the use or misuse of this software, or arising out of any accident, injury, or damage whatsoever, and from all costs, counsel fees and liabilities incurred in or about any such claim, action, or proceeding brought thereon. 4. Users are requested, but not required, to inform Raymond J. Mooney of any noteworthy uses of this software. 5. All materials and reports developed as a consequence of the use of this software shall duly acknowledge such use, in accordance with the usual standards of acknowledging credit in academic research.