Heterogeneous mixture models using sparse representation features for applause and laugh detection.
Ziqiang ShiJiqing HanTieran ZhengPublished in: MLSP (2011)
Keyphrases
- sparse representation
- mixture model
- dictionary learning
- gaussian mixture model
- sparse coding
- image classification
- face recognition
- generative model
- density estimation
- object tracking
- maximum likelihood
- unsupervised learning
- em algorithm
- feature set
- probabilistic model
- feature vectors
- feature space
- compressive sensing
- mixture modeling
- joint optimization
- image representation
- feature extraction
- high dimensional data
- test images
- image patches
- model selection
- data sets
- text classification
- subspace learning
- feature selection