Ryohei Hisano

According to our database, Ryohei Hisano authored at least 21 papers between 2011 and 2025.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2025

Capturing Legal Reasoning Paths from Facts to Law in Court Judgments using Knowledge Graphs.

Ryoma Kondo, Riona Matsuoka, Takahiro Yoshida, Kazuyuki Yamasawa, Ryohei Hisano

CoRR, August, 2025

Unfolded Laplacian Spectral Embedding: A Theoretically Grounded Approach to Dynamic Network Representation.

Haruka Ezoe, Hiroki Matsumoto, Ryohei Hisano

CoRR, August, 2025

Constraint-Aware Ontology Engineering for Information Extraction from Financial Contracts.

Ryoma Kondo, Shamik Kundu, Muneaki Imai, Kyosuke Tomoda, Yuki Takazawa, Ryohei Hisano

Proceedings of the Joint Proceedings of Industry, 2025

Aligning ESG Controversy Data with International Guidelines through Semi-Automatic Ontology Construction.

Tsuyoshi Iwata, Guillaume Comte, Melissa Flores, Ryoma Kondo, Ryohei Hisano

Proceedings of the Joint Proceedings of Industry, 2025

2024

Hierarchical Narrative Analysis: Unraveling Perceptions of Generative AI.

Riona Matsuoka, Hiroki Matsumoto, Takahiro Yoshida, Tomohiro Watanabe, Ryoma Kondo, Ryohei Hisano

CoRR, 2024

Hypergraph Change Point Detection using Adapted Cardinality-Based Gadgets: Applications in Dynamic Legal Structures.

Hiroki Matsumoto, Takahiro Yoshida, Ryoma Kondo, Ryohei Hisano

CoRR, 2024

Collaborative System Synergizing Human Expertise and Large-scale Language Models for Legal Knowledge Graph Construction.

Ryoma Kondo, Tomohiro Watanabe, Takahiro Yoshida, Kazuyuki Yamasawa, Ryohei Hisano

Proceedings of the ISWC 2024 Posters, 2024

Leveraging Large Language Models for Institutional Portfolio Management: Persona-Based Ensembles.

Yoshia Abe, Shuhei Matsuo, Ryoma Kondo, Ryohei Hisano

Proceedings of the IEEE International Conference on Big Data, 2024

2023

Masked prediction and interdependence network of the law using data from large-scale Japanese court judgments.

Ryoma Kondo, Takahiro Yoshida, Ryohei Hisano

Artif. Intell. Law, December, 2023

2022

Preface of Special Issue on Data Science Questing for a Better Society.

Takayuki Mizuno, Takaaki Ohnishi, Ryohei Hisano, Hiroshi Iyetomi, Tsutomu Watanabe

Rev. Socionetwork Strateg., 2022

2020

Prediction of ESG compliance using a heterogeneous information network.

Ryohei Hisano, Didier Sornette, Takayuki Mizuno

J. Big Data, 2020

Gaussian Hierarchical Latent Dirichlet Allocation: Bringing Polysemy Back.

Takahiro Yoshida, Ryohei Hisano, Takaaki Ohnishi

CoRR, 2020

Identifying the Hierarchical Influence Structure Behind Smart Sanctions Using Network Analysis.

Ryohei Hisano, Hiroshi Iyetomi, Takayuki Mizuno

Proceedings of the Social Informatics - 12th International Conference, 2020

Nondiagonal Mixture of Dirichlet Network Distributions for Analyzing a Stock Ownership Network.

Wenning Zhang, Ryohei Hisano, Takaaki Ohnishi, Takayuki Mizuno

Proceedings of the Complex Networks & Their Applications IX, 2020

2019

Learning Topic Models by Neighborhood Aggregation.

Ryohei Hisano

Proceedings of the Twenty-Eighth International Joint Conference on Artificial Intelligence, 2019

2018

Predicting Adverse Media Risk using a Heterogeneous Information Network.

Ryohei Hisano, Didier Sornette, Takayuki Mizuno

CoRR, 2018

2017

The gradual evolution of buyer-seller networks and their role in aggregate fluctuations.

Ryohei Hisano, Tsutomu Watanabe, Takayuki Mizuno, Takaaki Ohnishi, Didier Sornette

Appl. Netw. Sci., 2017

2016

Semi-supervised Graph Embedding Approach to Dynamic Link Prediction.

Ryohei Hisano

CoRR, 2016

A new approach to building the interindustry input-output table using block estimation techniques.

Ryohei Hisano

Proceedings of the 2016 IEEE International Conference on Big Data (IEEE BigData 2016), 2016

2012

High quality topic extraction from business news explains abnormal financial market volatility

Ryohei Hisano, Didier Sornette, Takayuki Mizuno, Takaaki Ohnishi, Tsutomu Watanabe

CoRR, 2012

2011

Predicted and verified evolution of power-law exponent in product market

Ryohei Hisano, Didier Sornette, Takayuki Mizuno

CoRR, 2011