Parameter estimation for sums of correlated gamma random variables. Application to anomaly detection in internet traffic.
Florent ChatelainPierre BorgnatJean-Yves TourneretPatrice AbryPublished in: ICASSP (2008)
Keyphrases
- random variables
- anomaly detection
- parameter estimation
- network traffic
- internet traffic
- graphical models
- probability distribution
- intrusion detection
- maximum likelihood
- markov random field
- anomalous behavior
- model selection
- random fields
- conditional independence
- independent and identically distributed
- network intrusion detection
- em algorithm
- bayesian networks
- latent variables
- posterior distribution
- approximate inference
- intrusion detection system
- least squares
- detecting anomalies
- one class support vector machines
- parameter estimation algorithm
- network security
- directed acyclic graph
- joint distribution
- unsupervised learning
- detect anomalies
- computer vision
- belief propagation
- negative selection algorithm