no code implementations • 26 Apr 2024 • Shun Maeda, Chunzhi Gu, Jun Yu, Shogo Tokai, Shangce Gao, Chao Zhang
We introduce the task of human action anomaly detection (HAAD), which aims to identify anomalous motions in an unsupervised manner given only the pre-determined normal category of training action samples.
no code implementations • 24 Nov 2021 • Katsuya Hotta, Takuya Akashi, Shogo Tokai, Chao Zhang
Subspace clustering methods which embrace a self-expressive model that represents each data point as a linear combination of other data points in the dataset provide powerful unsupervised learning techniques.