Text categorization by boosting automatically extracted concepts. - Lijuan Cai; Thomas Hofmann 001 (SIGIR, 2003)

Hierarchical document categorization with support vector machines. - Lijuan Cai; Thomas Hofmann 001 (CIKM, 2004)

Exploiting Known Taxonomies in Learning Overlapping Concepts. - Lijuan Cai; Thomas Hofmann 001 (IJCAI, 2007)

Multilabel Classification over Category Taxonomies. - Lijuan Cai (2008)