Type

Conference Proceedings

Authors

Gareth J.F. Jones
David N. Racca

Subjects

Computer Science

Topics
passage retrieval spoken content retrieval speech recognition contextualisation information retrieval retrieval effectiveness query language models

On the effectiveness of contextualisation techniques in spoken query spoken content retrieval (2016)

Abstract In passage and XML retrieval, contextualisation techniques seek to improve the rank of a relevant element by considering information from its surrounding elements and its container document. Recent research has demonstrated that some of these techniques are also particularly effective in spoken content retrieval tasks (SCR). However, no previous research has directly compared contextualisation techniques in an SCR setting, nor has it studied their potential to provide robustness to speech recognition errors. In this paper, we evaluate different contextualisation techniques, including a recently proposed technique based on positional language models (PLM) on the task of retrieving relevant spoken passages in response to a spoken query. We study the benefits of these techniques when queries and documents are transcribed with increasingly higher error rates. Experimental results over the Japanese NTCIR SpokenQuery&Doc collection show that combining global and local context is beneficial for SCR and that models usually benefit from using larger amounts of context in highly noisy conditions.
Collections Ireland -> Dublin City University -> Publication Type = Conference or Workshop Item
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools: Faculty of Engineering and Computing: School of Computing
Ireland -> Dublin City University -> DCU Faculties and Centres = Research Initiatives and Centres: ADAPT
Ireland -> Dublin City University -> Status = Published
Ireland -> Dublin City University -> Subject = Computer Science: Information retrieval

Full list of authors on original publication

Gareth J.F. Jones, David N. Racca

Experts in our system

1
Gareth J. F. Jones
Dublin City University
Total Publications: 297
 
2
David Racca
Dublin City University
Total Publications: 6