Takehiro Takayanagi — accepted AI-conference papers

2025

Can GPT-4 Sway Experts’ Investment Decisions?

Takehiro Takayanagi, Hiroya Takamura, Kiyoshi Izumi, Chung-Chi Chen

NAACL 2025findings

In the post-Turing era, evaluating large language models (LLMs) involves assessing generated text based on readers’ decisions rather than merely its indistinguishability from human-produced content. This paper explores how LLM-generated text impacts readers’ decisions, focusing on both amateur and e…

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2025

CoFinDiff: Controllable Financial Diffusion Model for Time Series Generation

Yuki Tanaka, Ryuji Hashimoto, Takehiro Takayanagi, Zhe Piao, Yuri Murayama, Kiyoshi Izumi

IJCAI 2025

The generation of synthetic financial data is a critical technology in the financial domain, addressing challenges posed by limited data availability. Traditionally, statistical models have been employed to generate synthetic data. However, these models fail to capture the stylized facts commonly ob

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