Papers › Mutual Modality Learning for Video Action Classification

Mutual Modality Learning for Video Action Classification

4 Nov 2020arXiv:2011.02543archive 2025-07-28

Stepan Komkov, Maksim Dzabraev, Aleksandr Petiushko

The construction of models for video action classification progresses rapidly. However, the performance of those models can still be easily improved by ensembling with the same models trained on different modalities (e.g. Optical flow). Unfortunately, it is computationally expensive to use several modalities during inference. Recent works examine the ways to integrate advantages of multi-modality into a single RGB-model. Yet, there is still a room for improvement. In this paper, we explore the various methods to embed the ensemble power into a single model. We show that proper initialization, as well as mutual modality learning, enhances single-modality models. As a result, we achieve state-of-the-art results in the Something-Something-v2 benchmark.

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papermsucode/mutual-modality-learning officialmentioned in papermentioned on GitHubpytorch report

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Tasks

Action ClassificationAction RecognitionClassificationGeneral ClassificationOptical Flow Estimation

Results from the paper archive 2025-07-28

TaskDatasetModelMetricValueRank at snapshotLeaderboardReport
Action Recognition Something-Something V2 MML (ensemble) Top-1 Accuracy 69.02 #48 of 123 Archive leaderboard report
Action Recognition Something-Something V2 MML (ensemble) Top-5 Accuracy 92.70 #48 of 123 Archive leaderboard report
Action Recognition Something-Something V2 MML (single) Top-1 Accuracy 66.83 #74 of 123 Archive leaderboard report
Action Recognition Something-Something V2 MML (single) Top-5 Accuracy 91.30 #74 of 123 Archive leaderboard report

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