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Alistair Moffat
Researcher at University of Melbourne
Publications - 344
Citations - 17826
Alistair Moffat is an academic researcher from University of Melbourne. The author has contributed to research in topics: Data compression & Inverted index. The author has an hindex of 57, co-authored 331 publications receiving 16595 citations. Previous affiliations of Alistair Moffat include University of Canterbury.
Papers
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Book
Managing Gigabytes: Compressing and Indexing Documents and Images
TL;DR: A guide to the MG system and its applications, as well as a comparison to the NZDL reference index, are provided.
Journal ArticleDOI
Inverted files for text search engines
Justin Zobel,Alistair Moffat +1 more
TL;DR: This tutorial introduces the key techniques in the area of text indexing, describing both a core implementation and how the core can be enhanced through a range of extensions.
Journal ArticleDOI
Rank-biased precision for measurement of retrieval effectiveness
Alistair Moffat,Justin Zobel +1 more
TL;DR: A new effectiveness metric, rank-biased precision, is introduced that is derived from a simple model of user behavior, is robust if answer rankings are extended to greater depths, and allows accurate quantification of experimental uncertainty, even when only partial relevance judgments are available.
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Arithmetic coding revisited
TL;DR: A new implementation of arithmetic coding is described that incorporates several improvements over a widely used earlier version by Witten, Neal, and Cleary, which has become a de facto standard and a modular structure that separates the coding, modeling, and probability estimation components of a compression system is described.