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Personal digital assistant (PDA) is more and more popular due to its powerful functions. To protect the personal information of PDA, we adopt the technology of text-independent speaker verification (SV) for this kind of embedded system. In this paper, Gaussian mixture model (GMM) and universal background model (UBM) are addressed in detail. The optimization of mathematical computation of GMM-UBM guarantees...
C4.5 is a learning algorithm that adopts local search strategy, and it cannot obtain the best decision rules. On the other hand, the simulated annealing algorithm is a globally optimized algorithm and it avoids the drawbacks of C4.5. This paper proposes a new credit evaluation method based on decision tree and simulated annealing algorithm. The experimental results demonstrate that the proposed method...
In this paper, we present a suite of optimizations targeting automatic abstraction refinement for generalized symbolic trajectory evaluation (GSTE). We optimize both model refinement and spec refinement supported by AutoGSTE: a counterexample-guided refinement loop for GSTE. Experiments on a family of benchmark circuits have shown that our optimizations lead to major efficiency improvements in verification...
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