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Amap Tech
Amap Tech
Jan 22, 2021 · Artificial Intelligence

Dynamic Road Condition Analysis Using EfficientNet and ConvLSTM: Solution to the AMAP‑TECH Algorithm Competition

The winning solution for the AMAP‑TECH competition combines EfficientNet spatial features with ConvLSTM temporal modeling, adds a mask‑prediction branch for closed‑road obstacles, and mitigates severe class imbalance through a two‑stage decoupled training pipeline, achieving first place on leaderboard A and top‑5 on leaderboard B without ensembling.

AI competitionConvLSTMEfficientNet
0 likes · 7 min read
Dynamic Road Condition Analysis Using EfficientNet and ConvLSTM: Solution to the AMAP‑TECH Algorithm Competition
Youku Technology
Youku Technology
Apr 16, 2020 · Artificial Intelligence

Multimodal Video Classification: Image Feature Improvements and System Insights

The talk presents Alibaba’s hierarchical video‑category system and a multimodal classification pipeline—leveraging EfficientNet, NeXtVLAD fusion, attention‑dropping augmentation, and MoCo contrastive learning—that together boost cold‑start recall by 43%, improve program classification over 20%, and set the stage for larger models and advanced unsupervised methods.

AIEfficientNetFeature Engineering
0 likes · 17 min read
Multimodal Video Classification: Image Feature Improvements and System Insights