Investigating the relationship between language model perplexity and IR precision-recall measures
Leif A. Azzopardi, Mark Girolami, Keith van Risjbergen · 2003
An empirical study has been conducted investigating the relationship between the performance of an aspect based language model in terms of perplexity and the corresponding information retrieval performance obtained. It is observed, on the corpora considered, that the perplexity of the language model has a systematic relationship with the achievable precision recall performance though it is not statistically significant.