24 Aug 2012

Max Whitney successfully defended his MSc thesis on Thursday August 23 2012. Slides from the defense are available.

Max Whitney defends his Masters thesis:images/mwhitney-thesis-defense.jpg

Whitney, M. Bootstrapping via graph propagation.

abstract: The Yarowsky algorithm is a simple self-training algorithm for bootstrapping learning from a small number of initial seed rules which has proven very effective in several natural language processing tasks. Bootstrapping a classifier from a small set of seed rules can be viewed as the propagation of labels between examples via features shared between them. This thesis introduces a novel variant of the Yarowsky algorithm based on this view. It is a bootstrapping learning method which uses a graph propagation algorithm with a well defined objective function. The experimental results show that our proposed bootstrapping algorithm achieves state of the art performance or better on several different natural language data sets.