15 citations · 26 across the 8 of their papers we have counts for
8 papers
Structural Properties of the Asymmetric Barabási-Albert Model in the Lattice Limit
Kazuaki Nakayama, Masato Hisakado, Shintaro Mori
The Asymmetric BA model extends the Barabási-Albert scale-free network model by introducing a parameter . As varies, the model transitions through different network structur…
Annealing of Ant Colony Optimization in the infinite-range Ising model
Shintaro Mori, Taiyo Shimizu, Masato Hisakado +1
Ant colony optimization (ACO) leverages the parameter to modulate the decision function's sensitivity to pheromone levels, balancing the exploration of diverse solutions with t…
Information cascade on networks and phase transitions
Masato Hisakado, Kazuaki Nakayama, Shintaro Mori
Herein, we consider a voting model for information cascades on several types of networks -- a random graph, the Barabási-Albert(BA) model, and lattice networks -- by using one para…
Pólya urn with memory kernel and asymptotic behaviours of autocorrelation function
Shintaro Mori, Masato Hisakado, Kazuaki Nakayama
Pólya urn is a stochastic process in which balls are randomly drawn from an urn of red and blue balls, and balls of the same color as the drawn balls are added. The probability of…
Universal function of the non-equilibrium phase transition of nonlinear Pólya urn
Kazuaki Nakayama, Shintaro Mori
We study the phase transition and the critical properties of a nonlinear Pólya urn, which is a simple binary stochastic process with a feedback mechani…
Optimal Learning Dynamics of Multi Agents in Restless Multiarmed Bandit Game
Kazuaki Nakayama, Ryuzo Nakamura, Masato Hisakado +1
Social learning is learning through the observation of or interaction with other individuals; it is critical in the understanding of the collective behaviors of humans in social ph…
A voter model on networks and multivariate beta distribution
Shintaro Mori, Masato Hisakado, Kazuaki Nakayama
In elections, the vote shares or turnout rates show a strong spatial correlation. The logarithmic decay with distance suggests that a 2D noisy diffusive equation describes the syst…
Phase transition of social learning collectives and "Echo chamber"
Shintaro Mori, Kazuaki Nakayama, Masato Hisakado
An "Echo chamber" is the state of social learning agents whose performances are deteriorated by excessive observation of others. We understand this to be the collective behavior of…