activity
20242026
collaborators

9 papers

cs.AI2026

CoffeeBench: Benchmarking Long-Horizon LLM Agents in Heterogeneous Multi-Agent Economies

Issa Sugiura, Daichi Hattori, Kazuo Araragi +5

As LLM agents become capable of increasingly long-horizon tasks, evaluating their performance in economic systems is becoming increasingly important. Unlike existing benchmarks tha…

cs.CV2026

HakushoBench: A Japanese Chart and Table VQA Benchmark from Governmental White Papers

Issa Sugiura, Shuhei Kurita, Yusuke Oda +1

Understanding chart and table images is essential for applying vision-language models (VLMs) to real-world document understanding. While English benchmarks have advanced rapidly, n…

cs.CV2026

WAON: A Large-Scale Japanese Image-Text Dataset for Cultural Adaptation in Contrastive Vision-Language Models

Issa Sugiura, Shuhei Kurita, Yusuke Oda +3

Contrastive vision-language models have achieved remarkable progress through large-scale pretraining. Recent work has shown that removing English-only caption filters and pretraini…

cs.CV2026

JAMMEval: A Refined Collection of Japanese Benchmarks for Reliable VLM Evaluation

Issa Sugiura, Koki Maeda, Shuhei Kurita +3

Reliable evaluation is essential for the development of vision-language models (VLMs). However, Japanese VQA benchmarks have undergone far less iterative refinement than their Engl…

cs.CV2026

Jagle: Building a Large-Scale Japanese Multimodal Post-Training Dataset for Vision-Language Models

Issa Sugiura, Keito Sasagawa, Keisuke Nakao +8

Developing vision-language models (VLMs) that generalize across diverse tasks requires large-scale training datasets with diverse content. In English, such datasets are typically c…

cs.CL2026

Llama-Mimi: Exploring the Limits of Flattened Speech Language Modeling

Issa Sugiura, Shuhei Kurita, Yusuke Oda +1

Speech Language Models (SpeechLMs) model tokenized speech to capture both semantic and acoustic information. When neural audio codecs based on Residual Vector Quantization (RVQ) ar…