Youjin Chang

Construction of Query Concepts in a Document Space Based on Data Mining Techniques

Iadh Ounis, Minkoo Kim, Youjin Chang, 2004, FQAS.

Generation of Query-Biased Concepts Using Content and Structure for Query Reformulation

Jun Wang, Mounia Lalmas, Youjin Chang, 2008, NLDB.

Query reformulation using automatically generated query concepts from a document space

Iadh Ounis, Minkoo Kim, Youjin Chang, 2006, Inf. Process. Manag..

Construction of query concepts based on feature clustering of documents

Vijay V. Raghavan, Minkoo Kim, Youjin Chang, 2006, Information Retrieval.