Research Interests: I am primarily interested in the design and analysis of machine learning algorithms with rigorous guarantees in the contexts of supervised learning, semi-supervised learning, adversarial learning, imbalanced data, and randomized search heuristics.

• Investigating these topics I try to provide statistical and computational bounds, or computational hardness results.
• In the absence of formal guarantees, I try to provide sound empirical conclusions.

During the last couple of years my students and I are investigating semi-supervised learning, regularization methods, learning with streaming data, and related topics.