Robust Non-negative Block Sparse Coding for Acoustic Novelty Detection.
Ritwik GiriArvindh KrishnaswamyKarim HelwaniPublished in: DCASE (2019)
Keyphrases
- novelty detection
- sparse coding
- dictionary learning
- natural images
- sparse representation
- linear combination
- image classification
- generative model
- norm minimization
- unsupervised learning
- anomaly detection
- image representation
- concept drift
- sparse codes
- feature space
- sparse representation based classification
- visual words
- action recognition
- text classification
- feature extraction