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Sadao Kurohashi

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ShapleyLaw: A Game-Theoretic Approach to Multilingual Scaling Laws

This paper considers multilingual pretraining as a cooperative game in which each language acts as a player that jointly contributes to pretraining, gaining the resulting reduction in test loss as the payoff and proposes a game-theoretic multilingual scaling law called ShapleyLaw.

Xuyang Cao, Qian-Ying Liu, Chuan Xiao et al. · 2 citations

Reasoning Depth and Environment Complexity: A Controlled Study of RLVR Data Allocation across Logical Reasoning Tasks

Three findings emerge: joint depth-complexity coverage outperforms single-axis recipes; reasoning families respond non-uniformly, with abductive reasoning degrading outside the RL-covered region and task correlations clustering into deductive-abductive and inductive-analogy pairs; and uniform mixing outperforms staged...

Yi-Hua Zhu, Qian-Ying Liu, Fei Cheng et al. · 0 citations
#computer vision Jun 2026

Mechanistic Diagnostics of Spatial Lexical Bias in Multimodal Large Language Model Spatial Reasoning

It is shown that a lightweight LLM-only DPO update on tiny single-object-pair synthetic data mitigates the bias, lifting four-way robust accuracy by up to 100 points on synthetic data, and by 68.1 points on broader evaluation datasets WhatsUp, SpatialMQA-Direct, and VSR.

Chuan Ma, Qianying Liu, Tomoyuki Obuchi et al. · 0 citations
#small language model Open access Aug 2026

Confidence-aware pseudo-label selection and verifier training for semi-supervised LLM reasoning with minimal labels

An adaptive threshold selection policy that chooses thresholds on validation data using pseudo-label precision and sample count is introduced and is combined with confidence-aware verifier training to support confidence-based selection of pseudo-labeled subsets.

Keizo Kato, Chen-Hui Chu, Yugo Murawaki et al. · 0 citations

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