Curse of Heterogeneity: Computational Barriers in Sparse Mixture Models and Phase Retrieval.
Jianqing FanHan LiuZhaoran WangZhuoran YangPublished in: CoRR (2018)
Keyphrases
- mixture model
- high dimensional
- gaussian mixture model
- em algorithm
- generative model
- density estimation
- language model
- expectation maximization
- probabilistic model
- finite mixtures
- unsupervised learning
- mixture modeling
- information retrieval
- retrieval model
- model selection
- finite mixture models
- automatic model selection
- maximum likelihood
- information retrieval systems
- model based clustering
- image retrieval
- mixture of gaussians
- gaussian mixture
- query expansion
- test collection
- prior knowledge
- reinforcement learning
- sparse representation
- high dimensional data
- semi supervised
- dirichlet distribution
- semantic video
- feature extraction
- image processing