activity
20232026
most citedOUTFOX: LLM-Generated Essay Detection Through In-Context Learning with Adversarially Generated Examples

4 citations · 5 across the 8 of their papers we have counts for

collaborators

10 papers

cs.CL2026

LLM Output Detectability and Task Performance Can be Jointly Optimized

Koshiro Saito, Ryuto Koike, Masahiro Kaneko +1

Detecting machine-generated text is essential for transparency and accountability when deploying LLMs. Watermarking enables statistically reliable detection by biasing token distri…

cs.CL2026

Synthesizing Instruction-Tuning Datasets with Contrastive Decoding

Tatsuya Ichinose, Youmi Ma, Masanari Oi +2

Using responses generated by high-performing large language models (LLMs) for instruction tuning has become a widely adopted approach. However, the existing literature overlooks a…

cs.CV2026

From Correspondence to Actions: Human-Like Multi-Image Spatial Reasoning in Multi-modal Large Language Models

Masanari Oi, Koki Maeda, Ryuto Koike +3

While multimodal large language models (MLLMs) have made substantial progress in single-image spatial reasoning, multi-image spatial reasoning, which requires integration of inform…

cs.CL2025

Machine Text Detectors are Membership Inference Attacks

Ryuto Koike, Liam Dugan, Masahiro Kaneko +2

Although membership inference attacks (MIAs) and machine-generated text detection target different goals, their methods often exploit similar signals based on a language model's pr…

cs.CL2025

GenAI Content Detection Task 1: English and Multilingual Machine-Generated Text Detection: AI vs. Human

Yuxia Wang, Artem Shelmanov, Jonibek Mansurov +23

We present the GenAI Content Detection Task~1 -- a shared task on binary machine generated text detection, conducted as a part of the GenAI workshop at COLING 2025. The task consis…

cs.CL2025

Is Human-Like Text Liked by Humans? Multilingual Human Detection and Preference Against AI

Yuxia Wang, Rui Xing, Jonibek Mansurov +23

Prior studies have shown that distinguishing text generated by Large Language Models (LLMs) from human-written one is highly challenging for humans, and often no better than random…

cs.CL2025

ExaGPT: Example-Based Machine-Generated Text Detection for Human Interpretability

Ryuto Koike, Masahiro Kaneko, Ayana Niwa +2

Detecting texts generated by Large Language Models (LLMs) could cause grave mistakes due to incorrect decisions, such as undermining students' academic dignity. LLM text detection…

cs.CL2024

Likelihood-based Mitigation of Evaluation Bias in Large Language Models

Masanari Oi, Masahiro Kaneko, Ryuto Koike +2

Large Language Models (LLMs) are widely used to evaluate natural language generation tasks as automated metrics. However, the likelihood, a measure of LLM's plausibility for a sent…

cs.CL2023★ 1 cited

How You Prompt Matters! Even Task-Oriented Constraints in Instructions Affect LLM-Generated Text Detection

Ryuto Koike, Masahiro Kaneko, Naoaki Okazaki

To combat the misuse of Large Language Models (LLMs), many recent studies have presented LLM-generated-text detectors with promising performance. When users instruct LLMs to genera…

cs.CL2023★ 4 cited

OUTFOX: LLM-Generated Essay Detection Through In-Context Learning with Adversarially Generated Examples

Ryuto Koike, Masahiro Kaneko, Naoaki Okazaki

Large Language Models (LLMs) have achieved human-level fluency in text generation, making it difficult to distinguish between human-written and LLM-generated texts. This poses a gr…