Unsupervised outlier detection using random subspace and subsampling ensembles of Dirichlet process mixtures.
Dongwook KimJuyeon ParkHee Cheol ChungSeonghyun JeongPublished in: Pattern Recognit. (2024)
Keyphrases
- outlier detection
- dirichlet process
- ensemble methods
- mixture model
- unsupervised learning
- ensemble learning
- multi task learning
- base classifiers
- base learners
- em algorithm
- machine learning methods
- knowledge discovery
- random forest
- density estimation
- decision trees
- expectation maximization
- detection algorithm
- generative model
- model selection
- supervised learning
- probabilistic model
- data mining
- data streams
- language model
- multi task
- machine learning
- learning tasks
- information retrieval
- data sets