This paper proposes a novel adaptive algorithm for nonlinear prediction of speech signals, which turns out to be the adaptation procedure for an order statistic LMS predictor. The LMS-L lter Pitas et al. addressed is modied to preserve the time information in the input vector for the adaptation, in which a coe cient matrix is utilized to update the predictor coe cients. Computer simulations dem...

In this paper, we have studied on the solutions of modied KdV equation andalso on the stability of them. We use the tanh method for this investigationand given solutions are good-behavior. The solution is shock wave and can beused in the physical investigations

We present and analyze an approach to improve the performance of a broad class of watermarking schemes through attack characterization. Traditional robust watermarking methods use little information concerning the way in which the image is tampered to estimate the embedded watermark. In our novel scheme we propose adding two types of watermarks: reference and robust. The reference watermark is ...

Are there computations whose characteristics are akin to certain unique phenomena that are witnessed in di erent domains of science? We are particularly interested in systems whose parameters are altered unpredictably whenever one of these parameters is measured or modied. For example, is there a computational environment in which the uncertainty principle of digital signal processing and Le Ch...

Jing Peng and Bir Bhanu College of Engineering University of California, Riverside, CA 92521 fjp,[email protected] Abstract Current computer vision systems whose basic methodology is open-loop or lter type typically use image segmentation followed by object recognition algorithms. These systems are not robust for most realworld applications. In contrast, the system presented here achieves r...

We consider a general Informed Principal Problem in the context of procurement. Both the potential suppliers and the buyer hold some private information: each supplier knows his cost of production, the buyer knows how much each supplier’s product …ts her technical requirements. We derive the optimal auction in this environment, and analyze the implementation problem with special emphasis on thr...

In our earlier work [1, 2], we developed a robust detector for multipath constrained environments when the transmitted signal is known. In this paper, we extend these results to the case where the transmitted signal is a random process. The approach in [1, 2] is to replace the orthogonal projection on the multipath signal subspace S by the orthogonal projection on a representation subspace G, s...

This paper describes qddb, a database program suite that addresses the common situation in which data are infrequently changed. Searches in the stable parts of databases are very e cient because they use hash-based searching through a completely inverted index, whereas searches in updated sections are less so. All les used by qddb are in Ascii format, so they can be easily modied by a knowledge...