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CPSC 7373: Artificial Intelligence Lecture 6: Machine Learning

CPSC 7373: Artificial Intelligence Lecture 6: Machine Learning. Jiang Bian, Fall 2014 University of Arkansas for Medical Sciences University of Arkansas at Little Rock. Machine Learning. ML is a branch of artificial intelligence Take empirical data as input

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Language Modeling

Language Modeling. Smoothing: Add-one (Laplace) smoothing. The intuition of smoothing (from Dan Klein). When we have sparse statistics: Steal probability mass to generalize better. P(w | denied the) 3 allegations 2 reports 1 claims 1 request 7 total. allegations. attack. man.

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207 views • 10 slides

Probabilistic Language-Model Based Document Retrieval

Probabilistic Language-Model Based Document Retrieval. Naïve Bayes for Retrieval. Naïve Bayes can also be used for ad-hoc document retrieval. Treat each of the n documents as a category with only one training example, the document itself. Classify queries using this n -way categorization.

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126 views • 10 slides

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