Functional Properties of Information Filtering. - Rie Sawai; Masahiko Tsukamoto; Yin-Huei Loh; Tsutomu Terada; Shojiro Nishio (VLDB, 2001)

Composition of Filtering Functions. - Rie Sawai; Masahiko Tsukamoto; Tsutomu Terada; Shojiro Nishio (DASFAA, 2003)

An information filtering system that optimizes the processing method based on mathematical properties. - Takuya Kodera; Rie Sawai; Tsutomu Terada; Masahiko Tsukamoto; Shojiro Nishio (Communications, Internet, and Information Technology, 2004)

Union and Intersection of Filtering Functions for Information Filtering. - Rie Sawai; Masahiko Tsukamoto; Tsutomu Terada; Shojiro Nishio (DASFAA, 2004)