Handling Imbalance in Fraudulent Reviewer Detection based on Expectation Maximization and KL Divergence.
Wen ZhangGuangjie QinQiang WangPublished in: WI/IAT (Workshop/Special Session) (2021)
Keyphrases
- kl divergence
- expectation maximization
- gaussian mixture
- kullback leibler
- kullback leibler divergence
- em algorithm
- gaussian distribution
- detection algorithm
- information theoretic
- mahalanobis distance
- posterior distribution
- probabilistic latent semantic analysis
- mixture model
- probability density function
- bayesian framework
- gaussian mixture model
- density estimation
- model selection
- information theory
- probabilistic model
- probability density
- noise model
- maximum a posteriori
- unsupervised learning
- maximum likelihood