LLaVAction: evaluating and training multi-modal large language models for action recognition

• URL: http://arxiv.org/abs/2503.18712v1
• Date: Mon, 24 Mar 2025 14:24:17 GMT
• Title: LLaVAction: evaluating and training multi-modal large language models for action recognition
• Authors: Shaokai Ye, Haozhe Qi, Alexander Mathis, Mackenzie W. Mathis,
• Abstract summary: We focus on evaluating and improving MLLMs to perform action recognition.<n>We reformulate EPIC-KITCHENS-100, one of the largest and most challenging egocentric action datasets.<n>We show that when we sample difficult incorrect answers as distractors, leading MLLMs struggle to recognize the correct actions.
• Score: 46.473599879244716
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Understanding human behavior requires measuring behavioral actions. Due to its complexity, behavior is best mapped onto a rich, semantic structure such as language. The recent development of multi-modal large language models (MLLMs) is a promising candidate for a wide range of action understanding tasks. In this work, we focus on evaluating and then improving MLLMs to perform action recognition. We reformulate EPIC-KITCHENS-100, one of the largest and most challenging egocentric action datasets, to the form of video multiple question answering (EPIC-KITCHENS-100-MQA). We show that when we sample difficult incorrect answers as distractors, leading MLLMs struggle to recognize the correct actions. We propose a series of methods that greatly improve the MLLMs' ability to perform action recognition, achieving state-of-the-art on both the EPIC-KITCHENS-100 validation set, as well as outperforming GPT-4o by 21 points in accuracy on EPIC-KITCHENS-100-MQA. Lastly, we show improvements on other action-related video benchmarks such as EgoSchema, PerceptionTest, LongVideoBench, VideoMME and MVBench, suggesting that MLLMs are a promising path forward for complex action tasks. Code and models are available at: https://github.com/AdaptiveMotorControlLab/LLaVAction.

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