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Hengjie Zhu

3 accepted papers

2026

Absorbing Gradient Conflicts: Modeling Semantic Variance via Kent Distributions for Cross-Modal Hashing

IJCAI 2026

Supervised proxy-based deep cross-modal hashing has become the dominant paradigm for large-scale retrieval. However, prevalent methods model class proxies as deterministic points in the embedding space. This rigid assumption causes severe gradient conflicts in multi-label scenarios, where gradient c

Cited by 0Scholar
2026

Discretization Is Not Always Better: Rethinking Deep Quantization for Asymmetric Image Retrieval

AAAI 2026technical

Asymmetric image retrieval (AIR), which typically employs a compact model for the query side and a large model for the database server, has garnered significant attention in resource-constrained environments. While deep hashing methods have shown great potential in large-scale image retrieval, curre

Cited by 0SourcePDFScholar
2026

Online Self-Calibration Against Hallucination in Vision-Language Models

IJCAI 2026

Large Vision-Language Models (LVLMs) often suffer from hallucinations, generating descriptions that include visual details absent from the input image. Recent preference alignment methods typically rely on supervision distilled from stronger models such as GPT. However, this offline paradigm introdu

Cited by 0Scholar