Configuring networked classifiers in distributed and resource constrained stream processing systems

We design algorithms for optimally configuring, in terms of model complexity as well as operating point, a cascade of exclusive classifiers on distributed systems, given underlying resource constraints. Under rate-dependent constraints we design a Viterbi-like strategy to detennine the optimal solution with significantly lower computational complexity than an exhaustive search. We illustrate the performance of this strategy on a cascade of classifiers for a speaker verification task, and highlight performance gains over using a single classifier. © 2007 IEEE.