Overview of the IR for Spoken Documents Task in NTCIR-9 Workshop

Abstract

This paper describes an overview of the IR for Spoken Documents Task in NTCIR-9 Workshop. In this task, the spoken term detection (STD) subtask and ad-hoc spoken document retrieval subtask (SDR) are conducted. Both of the subtasks target to search terms, passages and documents included in academic and simulated lectures of the Corpus of Spontaneous Japanese. Finally, seven and five teams participated in the STD subtask and the SDR subtask, respectively. This paper explains the data used in the subtasks, how to make transcriptions by speech recognition and the details of each subtask.