Search Results for author: Tatsuro Kawamoto

Found 8 papers, 2 papers with code

Consistency between ordering and clustering methods for graphs

no code implementations27 Aug 2022 Tatsuro Kawamoto, Masaki Ochi, Teruyoshi Kobayashi

A relational dataset is often analyzed by optimally assigning a label to each element through clustering or ordering.

Clustering

Graph-based open-ended survey on concerns related to COVID-19

no code implementations8 Dec 2020 Tatsuro Kawamoto, Takaaki Aoki, Michiko Ueda

The GOS framework is a hybrid of the two traditional survey frameworks that allows respondents to post their opinions in a free-format style, which can subsequently serve as one of the choice items for other respondents, just as in a multiple-choice survey.

Social and Information Networks Physics and Society

Algorithmic detectability threshold of the stochastic block model

no code implementations24 Oct 2017 Tatsuro Kawamoto

Because the algorithm cannot always learn the planted model parameters correctly, the algorithmic detectability threshold is qualitatively different from the one with the Nishimori condition.

Stochastic Block Model

Algorithmic infeasibility of community detection in higher-order networks

no code implementations24 Oct 2017 Tatsuro Kawamoto

We focus on the expectation-maximization (EM) algorithm with belief propagation (BP), and analytically derive its algorithmic detectability threshold, i. e., the limit of the modular structure strength below which the algorithm can no longer detect any modular structures.

Community Detection

Comparative analysis on the selection of number of clusters in community detection

2 code implementations24 Jun 2016 Tatsuro Kawamoto, Yoshiyuki Kabashima

We conduct a comparative analysis on various estimates of the number of clusters in community detection.

Social and Information Networks Physics and Society

Cross-validation estimate of the number of clusters in a network

1 code implementation25 May 2016 Tatsuro Kawamoto, Yoshiyuki Kabashima

Network science investigates methodologies that summarise relational data to obtain better interpretability.

Social and Information Networks Physics and Society

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