Quantization of Prior Probabilities for Collaborative Distributed Hypothesis Testing

Details Quantization of Prior Probabilities for Collaborative Distributed Hypothesis Testing Quantization of Prior Probabilities for Collaborative Distributed Hypothesis Testing

2011-09-12

arxiv.org/abs/1109.2567v1

Computer Science

Information Theory

11 pages

Scientific paper

This paper studies the quantization of prior probabilities, drawn from an ensemble, for distributed detection and data fusion. Design and performance equivalences between a team of N agents tied by a fixed fusion rule and a more powerful single agent are obtained. Effects of identical quantization and diverse quantization are compared. Consideration of perceived common risk enables agents using diverse quantizers to collaborate in hypothesis testing, and it is proven that the minimum mean Bayes risk error is achieved by diverse quantization. The comparison shows that optimal diverse quantization with K cells per quantizer performs as well as optimal identical quantization with N(K-1)+1 cells per quantizer. Similar results are obtained for maximum Bayes risk error as the distortion criterion.

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