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Guy Bar-Shalom on Muck Rack

Guy Bar-Shalom

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Articles

UniProbe: A Learnable Token-Level Hallucination Detector for Large VLMs using Multi-Structural Internal Representations

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By Dvir Samuel, Guy Bar-Shalom, Fabrizio Frasca
| huggingface.co
Published on Aug 11 · Submitted by Samuel on Aug 17 · NVIDIA Abstract UniProbe is a lightweight learnable detector that uses a directed graph and alternating GNN, ViT, and GRU modules to identify hallucinated tokens in frozen large vision-language models, enabling real-time resampling during generation. Large Vision-Language Models (LVLMs) achieve impressive visual reasoning and dialogue capabilities, yet frequently hallucinate content unsupported by the visual input.
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Balancing Efficiency and Expressiveness: Subgraph GNNs with Walk-Based Centrality

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By Guy Bar-Shalom, Michael Bronstein, Haggai Maron, Yam Eitan
| arXiv
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Topological Blind Spots: Understanding and Extending Topological Deep Learning Through the Lens of Expressivity

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By Fabrizio Frasca, Michael Bronstein, Yoav Gelberg, Guy Bar-Shalom
| arXiv
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