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Detecting changes in stock prices is a well known problem in finance with important implications for monitoring and business intelligence. Forewarning of changes in stock price, can be made by the early detection of changes in the distributions of stock order numbers. In this paper, we address the change detection problem for streams of stock order numbers and propose a novel incremental detection...
In this paper we propose PHOTO (pyramid histogram of topics), a new representation for image classification. We partition the image into hierarchical cells and learn the topic histogram using pLSA over each cell with EM algorithm. Then we concatenate the topic histograms over the cells at all levels to form a ldquolongrdquo vector, i.e. pyramid histogram of topics. Finally AdaBoost classifiers are...
The malicious code has characteristic of various types, and its ability of hiding increases quickly. In this paper, according to the analysis of hiding technology of malicious programs, it proposed a new idea of detecting malware based on the raw data. Finally, the results are given, which are compared with the current security detection scanners. It is a beneficial attempt of this method in detecting...
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