28 citations · 29 across the 2 of their papers we have counts for
2 papers
cs.CL2020★ 1 cited
Technical Progress Analysis Using a Dynamic Topic Model for Technical Terms to Revise Patent Classification Codes
Mana Iwata, Yoshiro Matsuda, Yoshimasa Utsumi +2
Japanese patents are assigned a patent classification code, FI (File Index), that is unique to Japan. FI is a subdivision of the IPC, an international patent classification code, t…
physics.soc-ph2015★ 28 cited
Heterogeneity of link weight and the evolution of cooperation
M. Iwata, E. Akiyama
In this paper, we investigate the effect of "heterogeneity of link weight", heterogeneity of the frequency or amount of interactions among individuals, on the evolution of cooperat…