GUEST EDITOR'S FOREWORD
A New Abstract Combinatorial Dimension for Exact Learning via Queries
The Computational Complexity of Densest Region Detection
Adaptive and Self-Confident On-Line Learning Algorithms
Relative Expected Instantaneous Loss Bounds
Boosting Using Branching Programs
Drifting Games and Brownian Motion
Estimation and Approximation Bounds for Gradient-Based Reinforcement Learning
Papers to Appear in Forthcoming Issues