Abstract

Multi-channel video-language retrieval require models to understand information from different channels (e.g. video\(+\)question, video\(+\)speech) to correctly link a video with a textual response or query. Fortunately, contrastive multimodal models are shown to be highly effective at aligning entities in images/videos and text, e.g., CLIP; text contrastive models are extensively studied recently for their strong ability of producing discriminative sentence embeddings, e.g., SimCSE. However, there is not a clear way to quickly adapt these two lines to multi-channel video-language retrieval with limited data and resources. In this paper, we identify a principled model design space with two axes: how to represent videos and how to fuse video and text information. Based on categorization of recent methods, we investigate the options of representing videos using continuous feature vectors or discrete text tokens; for the fusion method, we explore the use of a multimodal transformer or a p

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Tags

  • Image Retrieval

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  • citations9
  • S2 citationsβ€”
  • github stars0
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  • heat score7.50
  • arxiv keylin2022towards

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