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Multiple registrations per organization
NIST strongly discourages multiple registrations from same site/organization. Each registration should reflect a separate research effort. Please note that participants in the Language Recognition i-Vector Challenge can upload up to 100 submissions per day.
Are the i-vectors a mixture of males and females?
ANSWER: Yes, both development and evaluation sets contain males and females. However, this metadata is not provided.
Will NIST be scoring cross-gender non-targets?
ANSWER: Yes, there will be cross-gender trials scored.
Can the unlabelled development set and the evaluation set be seen as one homogenous database, or can we expect some kind of domain mismatch between development end evaluation sets?
ANSWER: There is not intentional data set shift included in the evaluation data with respect to the development set.
Are participants allowed to train system parameters on their own labelled data, or is parameter training strictly limited to the unlabelled data given as part of the challenge?
ANSWER: Parameter training should be limited to the unlabeled data given as part of the challenge.
Can I use some additional data that I have access to in order to develop or train my system?
ANSWER: No. We are requesting that participants not use data beyond what was distributed as part of the challenge.
What is the label I should use in my submission to indicate that a segment is out of set?
ANSWER: The required label is out_of_set (using underscores in between the words).