Automatic speech recognition system development in the “wild“


Type
Conference Object
Change log
Authors
Ragni, A 
Gales, MJF 
Abstract

The standard framework for developing an automatic speech recognition (ASR) system is to generate training and development data for building the system, and evaluation data for the final performance analysis. All the data is assumed to come from the domain of interest. Though this framework is matched to some tasks, it is more challenging for systems that are required to operate over broad domains, or where the ability to collect the required data is limited. This paper discusses ASR work performed under the IARPA MATERIAL program, which is aimed at cross-language information retrieval, and examines this challenging scenario. In terms of available data, only limited narrow-band conversational telephone speech data was provided. However, the system is required to operate over a range of domains, including broadcast data. As no data is available for the broadcast domain, this paper proposes an approach for system development based on scraping "related" data from the web, and using ASR system confidence scores as the primary metric for developing the acoustic and language model components. As an initial evaluation of the approach, the Swahili development language is used, with the final system performance assessed on the IARPA MATERIAL Analysis Pack 1 data.

Description
Keywords
cross domain development, confidence, web data, speech recognition
Journal Title
Proceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH
Conference Name
Interspeech 2018
Journal ISSN
2308-457X
1990-9772
Volume Title
2018-September
Publisher
ISCA
Sponsorship
The Office of the Director of National Intelligence (ODNI), Intelligence Advanced Research Projects Activity (IARPA), via Air Force Research Laboratory (AFRL)