74 citations · 355 across the 31 of their papers we have counts for
5 papers · 1 filter
Graph-based open-ended survey on concerns related to COVID-19
Tatsuro Kawamoto, Takaaki Aoki, Michiko Ueda
The COVID-19 pandemic is an unprecedented public health crisis with broad social and economic consequences. We conducted four surveys between April and August 2020 using the graph-…
Identifying macroscopic features in foreign visitor travel pathways
Tatsuro Kawamoto, Ryutaro Hashimoto
Human travel patterns are commonly studied as networks in which the points of departure and destination are encoded as nodes and the travel frequency between two points is recorded…
Palette diagram: A Python package for visualization of collective categorical data
Chihiro Noguchi, Tatsuro Kawamoto
Categorical data, wherein a numerical quantity is assigned to each category (nominal variable), are ubiquitous in data science. A palette diagram is a visualization tool for a larg…
Spectral clustering of annotated graphs using a factor graph representation
Tatsuro Kawamoto
Graph-structured data commonly have node annotations. A popular approach for inference and learning involving annotated graphs is to incorporate annotations into a statistical mode…
Fragility of spectral clustering for networks with an overlapping structure
Chihiro Noguchi, Tatsuro Kawamoto
Communities commonly overlap in real-world networks. This is a motivation to develop overlapping community detection methods, because methods for non-overlapping communities may no…