The 2001 HUB5 Mandarin Evaluation, Linguistic Data Consortium (LDC)
catalog number LDC2002S12 and ISBN 1-58563-228-7 is part of an ongoing
series of periodic evaluations conducted by NIST. These evaluations
provide an important contribution to the direction of research efforts
and the calibration of technical capabilities. They are intended to be
of interest to all researchers working on the general problem of
conversational speech recognition. To this end the evaluation was
designed to be simple, to focus on core speech technology issues, to be
fully supported, and to be accessible.
The evaluation was held from February 21 - March 12, 2001.
The systems were to produce character-level transcripts and
character-level confidence scores for the complete set
of evaluation test material.
Additional information is available at the 2001 NIST
Evaluation Plan for Recognition of Conversational Speech Over the
The test data comes from unexposed Mandarin CALLHOME Conversations,
stored in sphere format. There are 20 sphere files encoded in two-channel interleaved mulaw for a total of 441,990,656 bytes (421 Mbytes)
or eight hours of sphere data. These conversations were transcribed and
time-marked by speaker turn, by the LDC.
An included documentation table contains information on the speech
segments to be processed as follows:
There are no updates at this time.
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