Variational Bayes Factor Analysis for i-Vector Extraction

Abstract

In this document we are going to derive the equations needed to implement a Variational Bayes i-vector extractor. This can be used to extract longer i-vectors reducing the risk of overfittig or to adapt an i-vector extractor from a database to another with scarce development data. This work is based on Patrick Kenny's joint factor analysis and Christopher Bishop's variational principal components.

arXiv commentTechnical Report, ViVoLab, I3A, University of Zaragoza, Spain. arXiv admin note: text overlap with arXiv:1511.07318