Detecting Anomalous Online Reviewers: An Unsupervised Approach Using Mixture Models.
Naveen KumarDeepak VenugopalLiangfei QiuSubodha KumarPublished in: J. Manag. Inf. Syst. (2019)
Keyphrases
- mixture model
- detecting anomalous
- em algorithm
- gaussian mixture model
- anomaly detection
- density estimation
- generative model
- probabilistic model
- intrusion detection
- expectation maximization
- language model
- mixture modeling
- unsupervised learning
- model selection
- finite mixtures
- network traffic
- maximum likelihood
- probability density function
- cross validation
- background subtraction
- gaussian mixture
- model based clustering
- mixture components
- automatic model selection