How do correlation and variance of base-experts affect fusion in biometric authentication tasks?

@article{Poh2005HowDC,
  title={How do correlation and variance of base-experts affect fusion in biometric authentication tasks?},
  author={N. Poh and Samy Bengio},
  journal={IEEE Transactions on Signal Processing},
  year={2005},
  volume={53},
  pages={4384-4396}
}
Combining multiple information sources such as subbands, streams (with different features) and multimodal data has been shown to be a very promising trend, both in experiments and to some extents in real-life biometric authentication applications. Despite considerable efforts in fusions, there is a lack of understanding on the roles and effects of correlation and variance (of both the client and impostor scores of base-classifiers/experts). Often, scores are assumed to be independent. In this… CONTINUE READING
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