1 Introduction. - 1. 1 Machine Learning. - 1. 2 Learning Concepts from Examples. - 1. 3 Role of Bias in Concept Learning. - 1. 4 Kinds of Bias. - 1. 5 Origin of Bias. - 1. 6 Learning to Learn. - 1. 7 The New-Term Problem. - 1. 8 Guide to Remaining Chapters. - 2 Related Work. - 2. 1 Learning Programs that use a Static Bias. - 2. 2 Learning Programs that use a Dynamic Bias. - 3 Searching for a Better Bias. - 3. 1 Simplifications. - 3. 2 The RTA Method for Shifting Bias. - 4 LEX and STABB. - 4. 1 LEX: A Program that Learns from Experimentation. - 4. 2 STABB: a Program that Shifts Bias. - 5 Least Disjunction. - 5. 1 Procedure. - 5. 2 Requirements. - 5. 3 Experiments. - 5. 4 Example Trace. - 5. 5 Discussion. - 6 Constraint Back-Propagation. - 6. 1 Procedure. - 6. 2 Requirements. - 6. 3 Experiments. - 6. 4 Example Trace. - 6. 5 Discussion. - 7 Conclusion. - 7. 1 Summary. - 7. 2 Results. - 7. 3 Issues. - 7. 4 Further Work. - Appendix A: Lisp Code. - A. 1 STABB. - A. 2 Grammar. - A. 3 Intersection. - A. 4 Match. - A. 5 Operators. - A. 6 Utilities. Language: English