Machine Learning

Gowachin - A competition on Grammatical Inference.
http://www.irisa.fr/Gowachin/

Reinforcement Learning Repository - A centralized resource for researchers of reinforcement learning. Maintained at University of Massachusetts, Amherst.
http://www-anw.cs.umass.edu/rlr/

Pattern Recognition on The Web - Links to various pattern recognition and machine learning resources
http://cgm.cs.mcgill.ca/~godfried/teaching/pr-web.html

Pattern Recognition Information - A hub for Pattern Recognition linking to journals, books, bibliographies, jobs, conferences and news.
http://www.ph.tn.tudelft.nl/PRInfo/index.html

Machine learning for user modeling - Resources for researchers and practitioners interested in the use of learning techniques in intelligent, user-adaptive systems.
http://athos.rutgers.edu/ml4um/

Proto-Mind Machines - Artificial Neural Network-based natural language conversational agent and intelligent dialogue generator
http://www.proto-mind.com

Machine Learning in Games - How computers can learn to get better at playing games. This site is for artificial intelligence researchers and intrepid game programmers. I describe game programs and their workings; they rely on heuristic search algorithms, neural networks, genetic algorithms, temporal differences, and other methods.
http://satirist.org/learn-game/

Programming by Example - Programming by example (or by demonstration) is a technique for teaching the computer new behavior by demonstrating actions on concrete examples. The system records user actions and generalizes a program that can be used in new examples.
http://web.media.mit.edu/~lieber/PBE/index.html

Kernel machines - A central information source for the area of Support Vector Machines, Gaussian Process prediction, Mathematical Programming with Kernels, Regularization Networks, Reproducing Kernel Hilbert Spaces, and related methods. Provides links to papers, upcoming events, datasets, code.
http://www.kernel-machines.org

Reasoning about Computational Resource Allocation - An introduction to "anytime" algorithms. Published in Crossroads, the student magazine of the ACM.
http://www.acm.org/crossroads/xrds3-1/racra.html

Andrew Schein's Web Page - Machine learning approaches to data mining focussing on text mining applications
http://www.cis.upenn.edu/~ais

Computational Learning Theory - A research field devoted to studying the design and analysis of algorithms for making predictions about the future based on past experiences. The emphasis in COLT is on rigorous mathematical analysis. COLT is largely concerned with computational and data efficiency.
http://www.learningtheory.org/

Integrated Optimization - Artificial Intelligence - Site dedicated to research of artificial intelligence algorithms applied to information retrieval, data mining and optimization methods. Includes FAQs and AI resources for math/science teachers and students.
http://www.miislita.com

k-means clustering tutorial - Introduction to k-means clustering, a popular data mining and unsupervised learning algorithm. Free code, software, resources and examples are available for download.
http://people.revoledu.com/kardi/tutorial/kMean/index.html

Grammatical Inference - Repository of information on grammatical inference, automata induction, and language acquisition.
http://www.cs.iastate.edu/~honavar/gi/gi.html