Dr. Wu’s research areas are knowledge organization systems (such as taxonomy, classification, thesaurus, topic maps, and ontology), information retrieval systems (especially cross-language information retrieval and text classification), computational linguistics for text analysis, and open-source information analysis education (including critical thinking). - See more at: http://www.lsu.edu/chse/slis/about_us/bios/wu.php#sthash.GeguRTF1.dpuf