This paper presents an overview of the Spoken Query and
Spoken Document retrieval (SpokenQuery&Doc-2) task at
the NTCIR-12 Workshop. This task included spoken query
driven spoken content retrieval (SQ-SCR) and a spoken query
driven spoken term detection (SQ-STD) as the two subtasks. The paper describes details of each sub-task, the
data used, the creation of the speech recognition systems
used to create the transcripts, the design of the retrieval
test collections, the metrics used to evaluate the sub-tasks
and a summary of the results of submissions by the task
participants