Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article A Prototype System for Selective Dissemination of Broadcast News in European Portuguese | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2007 Article ID 37507 11 pages doi 2007 37507 Research Article A Prototype System for Selective Dissemination of Broadcast News in European Portuguese R. Amaral 1 2 3 H. Meinedo 1 3 D. Caseiro 1 3 I. Trancoso 1 3 and J. Neto1 3 1Instituto Superior Tecnico Universidade Tecnica de Lisboa 1049-001 Lisboa Portugal 2Escola Superior de Tecnologia Instituto Politecnico de Setubal 2914-503 Setubal Portugal 3 Spoken Language Systems Lab L2F Institute for Systems and Computer Engineering Research and Development INESC-ID 1000-029 Lisboa Portugal Received 8 September 2006 Accepted 14 April 2007 Recommended by Ebroul Izquierdo This paper describes ongoing work on selective dissemination of broadcast news. Our pipeline system includes several modules audio preprocessing speech recognition and topic segmentation and indexation. The main goal of this work is to study the impact of earlier errors in the last modules. The impact of audio preprocessing errors is quite small on the speech recognition module but quite significant in terms of topic segmentation. On the other hand the impact of speech recognition errors on the topic segmentation and indexation modules is almost negligible. The diagnostic of the errors in these modules is a very important step for the improvement of the prototype of a media watch system described in this paper. Copyright 2007 R. Amaral et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. INTRODUCTION The goal of this paper is to give a current overview of a prototype system for selective dissemination of broadcast news BN in European Portuguese. The system is capable of continuously monitoring a TV channel and searching inside its news shows for stories that match the profile of a given user. The
