A Strong And Robust Baseline For Text-image Matching | Awesome Similarity Search Papers

A Strong And Robust Baseline For Text-image Matching

Fangyu Liu, Rongtian Ye Β· Proceedings of the 57th Annual Meeting of the Association for Computational Linguistics: Student Research Workshop Β· 2019

We review the current schemes of text-image matching models and propose improvements for both training and inference. First, we empirically show limitations of two popular loss (sum and max-margin loss) widely used in training text-image embeddings and propose a trade-off: a kNN-margin loss which 1) utilizes information from hard negatives and 2) is robust to noise as all (K)-most hardest samples are taken into account, tolerating pseudo negatives and outliers. Second, we advocate the use of Inverted Softmax (\textsc{Is}) and Cross-modal Local Scaling (\textsc{Csls}) during inference to mitigate the so-called hubness problem in high-dimensional embedding space, enhancing scores of all metrics by a large margin.

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