1 citations · 2 across the 8 of their papers we have counts for
9 papers
Coupled Usage-Sense Processes: Temporal and Attributable Lexical Semantic Change
Haruka Ezoe, Ryohei Hisano
Lexical semantic change is usually summarized by a scalar distance between independently sampled period distributions. This measures how much a word changed, but does not reveal wh…
No Data Is Not No Risk: Visibility Aware Graph-Based Inference of Business Conduct Risk
Tsuyoshi Iwata, Johannes Laurmaa, Ryohei Hisano
The monitoring of business conduct risk is hindered by sparse, uneven, and visibility-biased data. Prior studies show that business conduct risk information and media coverage prop…
Aligning ESG Controversy Data with International Guidelines through Semi-Automatic Ontology Construction
Tsuyoshi Iwata, Guillaume Comte, Melissa Flores +2
The growing importance of environmental, social, and governance data in regulatory and investment contexts has increased the need for accurate, interpretable, and internationally a…
Capturing Legal Reasoning Paths from Facts to Law in Court Judgments using Knowledge Graphs
Ryoma Kondo, Riona Matsuoka, Takahiro Yoshida +2
Court judgments reveal how legal rules have been interpreted and applied to facts, providing a foundation for understanding structured legal reasoning. However, existing automated…
Unfolded Laplacian Spectral Embedding: A Theoretically Grounded Approach to Dynamic Network Representation
Haruka Ezoe, Hiroki Matsumoto, Ryohei Hisano
Dynamic relational data arise in many machine learning applications, yet their evolving structure poses challenges for learning representations that remain consistent and interpret…
Leveraging Large Language Models for Institutional Portfolio Management: Persona-Based Ensembles
Yoshia Abe, Shuhei Matsuo, Ryoma Kondo +1
Large language models (LLMs) have demonstrated promising performance in various financial applications, though their potential in complex investment strategies remains underexplore…
Dynamic Link and Flow Prediction in Bank Transfer Networks
Shu Takahashi, Kento Yamamoto, Shumpei Kobayashi +2
The prediction of both the existence and weight of network links at future time points is essential as complex networks evolve over time. Traditional methods, such as vector autore…
Hypergraph Change Point Detection using Adapted Cardinality-Based Gadgets: Applications in Dynamic Legal Structures
Hiroki Matsumoto, Takahiro Yoshida, Ryoma Kondo +1
Hypergraphs provide a robust framework for modeling complex systems with higher-order interactions. However, analyzing them in dynamic settings presents significant computational c…
Hierarchical Narrative Analysis: Unraveling Perceptions of Generative AI
Riona Matsuoka, Hiroki Matsumoto, Takahiro Yoshida +3
Written texts reflect an author's perspective, making the thorough analysis of literature a key research method in fields such as the humanities and social sciences. However, conve…