Log in Log in Sign up

C_llr (log-likelihood ratio cost)

A proper scoring rule measuring the calibration quality of a speaker recognition system's LR outputs; a well-calibrated system has C_llr close to zero. Required as a disclosure metric under ENFSI BPM 2022 for systems used in forensic casework.

Explained in

Modern Automated Speaker Recognition: NIST SRE and the ENFSI BPM

Related terms

Background population database BATVOX ENFSI BPM ENFSI verbal scale Equal error rate (EER)i-vector NIST SRE (Speaker Recognition Evaluation)PLDA (Probabilistic Linear Discriminant Analysis)x-vector

Your journey to becoming a forensic professional starts here.

Practice with mock tests, learn from structured notes, and get your questions answered by a global forensic community, all in one place.

Continue learning Create Your Account