Type

Conference Proceedings

Authors

Roeland Ordelman
Thijs Verschoor
Robin Aly
Christian Wartena
Martha Larson
Gareth J. F. Jones
Maria Eskevich

Subjects

Computer Science

Topics
retrieval effectiveness video search video retrieval multimedia systems rich speech retrieval user generated video information retrieval automatic speech recognition asr

Comparing retrieval effectiveness of alternative content segmentation methods for Internet video search (2012)

Abstract We present an exploratory study of the retrieval of semiprofessional user-generated Internet video. The study is based on the MediaEval 2011 Rich Speech Retrieval (RSR) task for which the dataset was taken from the Internet sharing platform blip.tv, and search queries associated with specific speech acts occurring in the video. We compare results from three participant groups using: automatic speech recognition system transcript (ASR), metadata manually assigned to each video by the user who uploaded it, and their combination. RSR 2011 was a known-item search for a single manually identified ideal jump-in point in the video for each query where playback should begin. Retrieval effectiveness is measured using the MRR and mGAP metrics. Using different transcript segmentation methods the participants tried to maximize the rank of the relevant item and to locate the nearest match to the ideal jump-in point. Results indicate that best overall results are obtained for topically homogeneous segments which have a strong overlap with the relevant region associated with the jump-in point, and that use of metadata can be beneficial when segments are unfocused or cover more than one topic.
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 -> Subject = Computer Science
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools
Ireland -> Dublin City University -> Status = Published
Ireland -> Dublin City University -> Subject = Computer Science: Multimedia systems
Ireland -> Dublin City University -> Subject = Computer Science: Information retrieval
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools: Faculty of Engineering and Computing

Full list of authors on original publication

Roeland Ordelman, Thijs Verschoor, Robin Aly, Christian Wartena, Martha Larson, Gareth J. F. Jones, Maria Eskevich

Experts in our system

1
Roeland Ordelman
Dublin City University
Total Publications: 11
 
2
Robin Aly
Dublin City University
Total Publications: 15
 
3
Gareth J. F. Jones
Dublin City University
Total Publications: 265
 
4
Maria Eskevich
Dublin City University
Total Publications: 19