New metrics for meaningful evaluation of informally structured speech retrieval

Maria Eskevich, Walid Magdy, Gareth J.F. Jones

Research output: Chapter in Book/Report/Conference proceedingConference contribution

15 Citations (Scopus)

Abstract

Search effectiveness for tasks where the retrieval units are clearly defined documents is generally evaluated using standard measures such as mean average precision (MAP). However, many practical speech search tasks focus on content within large spoken files lacking defined structure. These data must be segmented into smaller units for search which may only partially overlap with relevant material. We introduce two new metrics for the evaluation of search effectiveness for informally structured speech data: mean average segment precision (MASP) which measures retrieval performance in terms of both content segmentation and ranking with respect to relevance; and mean average segment distance-weighted precision (MASDWP) which takes into account the distance between the start of the relevant segment and the retrieved segment. We demonstrate the effectiveness of these new metrics on a retrieval test collection based on the AMI meeting corpus.

Original languageEnglish
Title of host publicationAdvances in Information Retrieval - 34th European Conference on IR Research, ECIR 2012, Proceedings
Pages170-181
Number of pages12
DOIs
Publication statusPublished - 27 Apr 2012
Event34th European Conference on Information Retrieval, ECIR 2012 - Barcelona, Spain
Duration: 1 Apr 20125 Apr 2012

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume7224 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Other

Other34th European Conference on Information Retrieval, ECIR 2012
CountrySpain
CityBarcelona
Period1/4/125/4/12

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Keywords

  • Speech retrieval
  • evaluation metrics
  • informally structured speech

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)

Cite this

Eskevich, M., Magdy, W., & Jones, G. J. F. (2012). New metrics for meaningful evaluation of informally structured speech retrieval. In Advances in Information Retrieval - 34th European Conference on IR Research, ECIR 2012, Proceedings (pp. 170-181). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 7224 LNCS). https://doi.org/10.1007/978-3-642-28997-2_15