Probabilistic Information Retrieval Probabilistic IR topics Classical probabilistic retrieval model Probability ranking principle, etc Binary independence model Bayesian networks for text retrieval Language model approach to IR An important emphasis in recent work Probabilistic methods are one of the oldest but also one of the currently hottest topics in /R Traditionally: neat ideas, but they ve never won on performance. It may be different nowProbabilistic Information Retrieval 5 Probabilistic IR topics ▪ Classical probabilistic retrieval model ▪ Probability ranking principle, etc. ▪ Binary independence model ▪ Bayesian networks for text retrieval ▪ Language model approach to IR ▪ An important emphasis in recent work ▪ Probabilistic methods are one of the oldest but also one of the currently hottest topics in IR. ▪ Traditionally: neat ideas, but they’ve never won on performance. It may be different now