I started as a PhD student in 2007 at the Information and Language Processing Systems(ILPS) group of University of Amsterdam. Before that, I received my master's degree in Artificial Intelligence at Katholieke Universiteit Leuven in Belgium and my bechelor's degree at Zhejiang University in China.
My research topic is topic structure modeling and its applications in information retrieval, such as query difficulty prediction, effects of relevance feedback and retrieval models with respect to different types of information needs, e.g., topic distillation or diversification.
I have also been working on automatic link generation. Links, as you can see, provide additional information to what you are reading in the current text. They can be physical hyperlinks as well as abstract semantic relations among entities, documents or different knowledge resources. In order to generate useful links instead of spams, I explore the relations between linked objects using statistical analysis and language modeling approaches.
My research interest includes: information retrieval, clustering, topic models, data/text mining.