Challenge: Existing methods employ sentence-level retrieval and fusion methods, which may lead to similarity bias and interference from irrelevant information in unstructured knowledge sentences.
Approach: They propose a segment-level and category-oriented network to solve similarity bias problem by segmenting and prompting knowledge retrieval methods and a category-based grounding method.
Outcome: The proposed model eliminates similarity bias and improves the overall performance of the KB-REC task.

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Challenge: Referring expression comprehension is a visual-linguistic task that involves localizing objects in images based on textual referring expressions.
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Challenge: Existing frameworks for referring expression comprehension with commonsense knowledge are lacking in the field of multimodal referring .
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FineCops-Ref: A new Dataset and Task for Fine-Grained Compositional Referring Expression Comprehension (2024.emnlp-main)

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Challenge: Referring Expression Comprehension (REC) is a cross-modal task that objectively evaluates the capabilities of language understanding, image comprehension, and language-to-image grounding.
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Challenge: Existing document-level relation extraction methods assume entities and their mentions are given beforehand, which is inadequate for real-world applications.
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Challenge: Existing models for REG and REC have distinct inputs and connections between them . a new model for REg and reprehension is needed to solve these problems .
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Challenge: Existing evaluation metrics suggest that Multimodal large language models have acquired fine-grained visual grounding capabilities.
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Challenge: Visual referring expression comprehension (ReC) models can be trained for a domain, but it remains unclear if they can be applied in a zero-shot manner to more complex tasks like ReC.
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Pattern-revising Enhanced Simple Question Answering over Knowledge Bases (C18-1)

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