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Hiromi Wakaki

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#artificial intelligence Preprint Oct 2026

Syn-Omni: Structured Specialization and Progressive Collaboration for Omnimodal Embeddings

Omnimodal embeddings naturally involve both shared representations and modality-specific features across heterogeneous inputs. However, existing omnimodal embedding methods often rely on a single shared parameter space over mixed-modality data, limiting structural separation between universal and modality-specific repr...

Youngtaek Oh, Qi-Yu Wu, Hiromi Wakaki et al. · 0 citations

Theoretical Refinement of CLIP by Utilizing Linear Structure of Optimal Similarity

KME-CLIP is proposed, which leverages this structure through the inner product in a reproducing kernel Hilbert space (RKHS) and theoretically proves that the KME-CLIP similarity can bring the contrastive loss arbitrarily close to its optimal value, which is attained by PMI, as the size of the point set grows.

Naoki Yoshida, Satoshi Hayakawa, Yuhta Takida et al. · 2 citations

Demystifying MaskGIT Sampler and Beyond: Adaptive Order Selection in Masked Diffusion

This paper theoretically analyzes the MaskGIT sampler for image modeling, revealing its implicit temperature sampling mechanism, and shows that MaskGIT is asymptotically equivalent to a choose-then-sample (CTS) formulation, instantiated as the "moment sampler," which explicitly separates index selection from token samp...

Satoshi Hayakawa, Yuhta Takida, Masaaki Imaizumi et al. · 10 citations · ⚡1

MusTBENCH: Benchmarking and Advancing Temporal Grounding in Music LLMs

MusTBench, a music-expert-validated benchmark designed to evaluate temporal grounding in LALMs through five temporally grounded question-answering tasks, is introduced, establishing temporal grounding as a key missing capability in current LALMs and position MusTBench as a challenging benchmark for future research in t...

Daeyong Kwon, Qiyu Wu, S. Kuriya et al. · 3 citations
Jul 2026

DynaVieW: Schema-Guided World Modeling for Understanding Hierarchical Visual Dynamics

A dynamic schema-guided world model optimized for visual dynamic prediction and simulation, DynaVieW, achieves an in-depth understanding of visual dynamics by learning interleaved state-transition sequences, where states cover broad visual scenes from video keyframes and transitions capture comprehensive dynamic consti...

Silin Gao, Hao Zhao, Zeming Chen et al. · 0 citations
Jul 2026

Searching Videos as Trees: Self-Correcting Agents for Grounded Long Video QA

VideoTreeSearch (VTS) is proposed, a framework that casts grounded LVQA as iterative self-correcting search over an adaptive temporal tree, and trains an agent to navigate the tree through four discrete operations: zoom_in, zoom_out, shift, and answer.

Ce Zhang, Ziyang Wang, Yu-Lu Pan et al. · 0 citations
Preprint Aug 2026

MLLMCLIP: Feature-Level Distillation of MLLM for Robust Vision-Language Representations

Compared to prior CLIP-enhancement methods, MLLMCLIP achieves state-of-the-art compositional accuracy while delivering consistent gains on standard zero-shot classification and image-text retrieval, showing that feature-level distillation strengthens both compositional and general vision-language representation capabil...

Jongsuk Kim, Qi-Yu Wu, Zhuoyuan Mao et al. · 0 citations

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