Type

Conference Proceedings

Authors

Maarten de Rijke
Gareth J. F. Jones
Martha Larson
Jana Besser
Eamonn Newman
Manos Tsagkias
Marguerite Fuller

Subjects

Computer Science

Topics
information technology user study semantic automatic speech recognition asr content texttiling term clouds speech browsing

Using term clouds to represent segment-level semantic content of podcasts (2008)

Abstract Spoken audio, like any time-continuous medium, is notoriously difficult to browse or skim without support of an interface providing semantically annotated jump points to signal the user where to listen in. Creation of time-aligned metadata by human annotators is prohibitively expensive, motivating the investigation of representations of segment-level semantic content based on transcripts generated by automatic speech recognition (ASR). This paper examines the feasibility of using term clouds to provide users with a structured representation of the semantic content of podcast episodes. Podcast episodes are visualized as a series of sub-episode segments, each represented by a term cloud derived from a transcript generated by automatic speech recognition (ASR). Quality of segment-level term clouds is measured quantitatively and their utility is investigated using a small-scale user study based on human labeled segment boundaries. Since the segment-level clouds generated from ASR-transcripts prove useful, we examine an adaptation of text tiling techniques to speech in order to be able to generate segments as part of a completely automated indexing and structuring system for browsing of spoken audio. Results demonstrate that the segments generated are comparable with human selected segment boundaries.
Collections Ireland -> Dublin City University -> Publication Type = Conference or Workshop Item
Ireland -> Dublin City University -> Subject = Computer Science
Ireland -> Dublin City University -> DCU Faculties and Centres = Research Initiatives and Centres: Centre for Digital Video Processing (CDVP)
Ireland -> Dublin City University -> Status = Published
Ireland -> Dublin City University -> Subject = Computer Science: Information technology
Ireland -> Dublin City University -> DCU Faculties and Centres = Research Initiatives and Centres

Full list of authors on original publication

Maarten de Rijke, Gareth J. F. Jones, Martha Larson, Jana Besser, Eamonn Newman, Manos Tsagkias, Marguerite Fuller

Experts in our system

1
Gareth J. F. Jones
Dublin City University
Total Publications: 265
 
2
Eamonn Newman
Dublin City University
Total Publications: 27