A Symmetric Kernel Partial Least Squares Framework for Speaker Recognition

作者：Srinivasan Balaji Vasan^*; Luo Yuancheng; Garcia Romero Daniel; Zotkin Dmitry N; Duraiswami Ramani

来源：IEEE Transactions on Audio Speech and Language Processing, 2013, 21(7): 1415-1423.

DOI：10.1109/TASL.2013.2253096

• One-shot similarity
• kernel PLS
• speaker verification
• speaker recognition
• discriminative classifier

I-vectors are concise representations of speaker characteristics. Recent progress in i-vectors related research has utilized their ability to capture speaker and channel variability to develop efficient automatic speaker verification (ASV) systems. Inter-speaker relationships in the i-vector space are non-linear. Accomplishing effective speaker verification requires a good modeling of these non-linearities and can be cast as a machine learning problem. Kernel partial least squares (KPLS) can be used for discriminative training in the i-vector space. However, this framework suffers from training data imbalance and asymmetric scoring. We use "one shot similarity scoring" (OSS) to address this. The resulting ASV system (OSS-KPLS) is tested across several conditions of the NIST SRE 2010 extended core data set and compared against state-of-the-art systems: Joint Factor Analysis (JFA), Probabilistic Linear Discriminant Analysis (PLDA), and Cosine Distance Scoring (CDS) classifiers. Improvements are shown.

• 出版日期2013-7