Papers › Moment of Untruth: Dealing with Negative Queries in Video Moment Retrieval
Moment of Untruth: Dealing with Negative Queries in Video Moment Retrieval
Kevin Flanagan, Dima Damen, Michael Wray
Video Moment Retrieval is a common task to evaluate the performance of visual-language models - it involves localising start and end times of moments in videos from query sentences. The current task formulation assumes that the queried moment is present in the video, resulting in false positive moment predictions when irrelevant query sentences are provided. In this paper we propose the task of Negative-Aware Video Moment Retrieval (NA-VMR), which considers both moment retrieval accuracy and negative query rejection accuracy. We make the distinction between In-Domain and Out-of-Domain negative queries and provide new evaluation benchmarks for two popular video moment retrieval datasets: QVHighlights and Charades-STA. We analyse the ability of current SOTA video moment retrieval approaches to adapt to Negative-Aware Video Moment Retrieval and propose UniVTG-NA, an adaptation of UniVTG designed to tackle NA-VMR. UniVTG-NA achieves high negative rejection accuracy (avg. 98.4%) scores while retaining moment retrieval scores to within 3.87% Recall@1. Dataset splits and code are available at https://github.com/keflanagan/MomentofUntruth
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