Japanese Morphological Analysis System, ChaSen

ChaSen version 1.0 was officially released on 19 February, 1997 by the
Computational Linguistics Laboratory, the Graduate School of
Information Science, and the Nara Institute of Science and Technology
(NAIST). It is a free Japanese Morphological analyser. It grew out of
JUMAN version 2.0 development and has made significant improvements in
system performance. Origin of Package Name:

Takayama, Nara (where NAIST is situated) is famous for producing a tea
whisk used in traditional Japanese tea ceremonies. The Japanese name
for the tea whisk is "chasen" and that is the reason for giving the
name ChaSen to this package developed in NAIST.