Language Models for IR
Contents:
LM.1 Overview
LM.2 What is a language model?
LM.3 Query likelihood ranking
LM.4 The unigram model (urn model)
LM.5 Zero-frequency problem
LM.6 Laplace correction and absolute discounting
LM.7 Good-Turing estimate
LM.8 Interpolation with background model
LM.9 Jelinek-Mercer smoothing
LM.10 Dirichlet smoothing
LM.11 Leave-one-out smoothing
LM.12 Smoothing and inverse document frequency
LM.13 Language model ranking formula
LM.14 Issues to consider