37 citations · 226 across the 24 of their papers we have counts for
25 papers
Editable Map-Conditioned Trajectory Generation for Human Mobility Simulation
Takayuki Mizuno, Shouji Fujimoto, Mikito Hiruki +1
Geospatial simulation of infrastructure interventions requires mobility generators that respond directly to edited maps, yet many data-driven generators do not expose the map as an…
Generating Individual Trajectories Using GPT-2 Trained from Scratch on Encoded Spatiotemporal Data
Taizo Horikomi, Shouji Fujimoto, Atushi Ishikawa +1
Following Mizuno, Fujimoto, and Ishikawa's research (Front. Phys. 2022), we transpose geographical coordinates expressed in latitude and longitude into distinctive location tokens…
Composite distributions in the social sciences: A comparative empirical study of firms' sales distribution for France, Germany, Italy, Japan, South Korea, and Spain
Arturo Ramos, Till Massing, Atushi Ishikawa +2
We study 17 different statistical distributions for sizes obtained {}from the classical and recent literature to describe a relevant variable in the social sciences and Economics,…
Shape of Growth Rate Distribution Determines the Type of Non-Gibrat's Property
Atushi Ishikawa, Shouji Fujimoto, Takayuki Mizuno
In this study, the authors examine exhaustive business data on Japanese firms, which cover nearly all companies in the mid- and large-scale ranges in terms of firm size, to reach s…
Non-Gibrat's law in the middle scale region
Masashi Tomoyose, Shouji Fujimoto, Atushi Ishikawa
By using numerical simulation, we confirm that Takayasu--Sato--Takayasu (TST) model which leads Pareto's law satisfies the detailed balance under Gibrat's law. In the simulation, w…
Quasistatically varying log-normal distribution in the middle scale region of Japanese land prices
Atushi Ishikawa
Employing data on the assessed value of land in 1974--2007 Japan, we exhibit a quasistatically varying log-normal distribution in the middle scale region. In the derivation, a Non-…