K2U at TREC 2014 KBA Track. - Shun Kawahara; Kuniaki Uehara; Kazuhiro Seki (TREC, 2014)

Detecting Vital Documents Using Negative Relevance Feedback in Distributed Realtime Computation Framework. - Shun Kawahara; Kazuhiro Seki; Kuniaki Uehara (PACLING, 2015)

Detecting Vital Documents in Massive Data Streams. - Shun Kawahara; Kazuhiro Seki; Kuniaki Uehara (Open J. Web Technol., 2015)