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Mutual Modality Learning for Video Action Classification
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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Code
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Tasks
Results from the paper archive 2025-07-28
| Task | Dataset | Model | Metric | Value | Rank at snapshot | Leaderboard | Report |
|---|---|---|---|---|---|---|---|
| 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 |
Ranks are positions in the archive's leaderboards as they stood at the 2025-07-28 snapshot. Results published since then are not among these rows, so a rank here is not a current standing.
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