HERMES: temporal-coHERent long-forM understanding with Episodes and Semantics

• URL: http://arxiv.org/abs/2408.17443v3
• Date: Sat, 09 Nov 2024 06:46:41 GMT
• Title: HERMES: temporal-coHERent long-forM understanding with Episodes and Semantics
• Authors: Gueter Josmy Faure, Jia-Fong Yeh, Min-Hung Chen, Hung-Ting Su, Shang-Hong Lai, Winston H. Hsu,
• Abstract summary: HERMES is a model that simulates episodic memory accumulation to capture action sequences. Episodic COmpressor efficiently aggregates crucial representations from micro to semi-macro levels. Semantic ReTRiever dramatically reduces feature dimensionality while preserving relevant macro-level information.
• Score: 32.117677036812836
• License:
• Abstract: Existing research often treats long-form videos as extended short videos, leading to several limitations: inadequate capture of long-range dependencies, inefficient processing of redundant information, and failure to extract high-level semantic concepts. To address these issues, we propose a novel approach that more accurately reflects human cognition. This paper introduces HERMES: temporal-coHERent long-forM understanding with Episodes and Semantics, a model that simulates episodic memory accumulation to capture action sequences and reinforces them with semantic knowledge dispersed throughout the video. Our work makes two key contributions: First, we develop an Episodic COmpressor (ECO) that efficiently aggregates crucial representations from micro to semi-macro levels, overcoming the challenge of long-range dependencies. Second, we propose a Semantics ReTRiever (SeTR) that enhances these aggregated representations with semantic information by focusing on the broader context, dramatically reducing feature dimensionality while preserving relevant macro-level information. This addresses the issues of redundancy and lack of high-level concept extraction. Extensive experiments demonstrate that HERMES achieves state-of-the-art performance across multiple long-video understanding benchmarks in both zero-shot and fully-supervised settings.

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