The Ekman6 dataset from the paper Heterogeneous Knowledge Transfer in Video Emotion Recognition is usually available on the authors’ official page. However, since the original link (http://bigvid.fudan.edu.cn/data/Ekman.zip) is not accessible, you can try alternative sources:

1. Yanwei Fu’s dataset page: https://yanweifu.github.io/Dataset.html

2. Zenodo (pretrained features and processed data): https://zenodo.org/records/13623249

3. Papers With Code: https://paperswithcode.com/dataset/ekman6

4. GitHub projects with related resources: https://github.com/Valendrew/ekman-emotion-detection