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We consider demixing a pair of sparse signals in orthonormal basis via convex optimization. Theoretically, we characterize the condition under which the solution of the convex optimization problem correctly demixes the true signal components. In specific, we introduce the local subspace coherence to characterize how a basis vector is coherent with a signal subspace, and show that the convex optimization...
Prediction of stock market has attracted attention from industry to academia [1, 2]. Various machine learning algorithms such as neural networks, genetic algorithms, support vector machine, and others are used to predict stock prices.
This paper studies an enhanced robust kernel least mean square (KLMS) adaptive filtering algorithm for nonlinear acoustic echo cancellation (NLAEC) in impulsive noise environment. Robust KLMS algorithm based on M-estimate theory shows robustness to simulated, Contaminated Gaussian (CG) impulsive noise. However, it fails to combat real-world impulsive noise which normally consists of a few consecutive...
Symbolic execution based test generation has made progress in recent years. However, in order to scale to larger programs there are some issues to be solved. Among them, generating a set of feasible paths to achieve high coverage gets more attention. In this paper, we focus on how to increase covering efficiency while maintaining high coverage. To achieve high branch coverage efficiently, we propose...
A new index mode for extraction of water body with HJ-1 satellite CCD imagery - Normalized Difference of RVI and NDWI(NDRW) which combined both RVI and NDWI values is purposed in this paper based on analyzing the spectral characteristics of water in HJ-1 satellite CCD imagery and the advantages and disadvantages of three the most frequently used indexes, which are Ratio Vegetation Index(RVI), Normalized...
Several serious fire and explosion accidents occurred in Chinese oil depots in recent years, thus an increasing number of people pay attention to its security work. Fire safety assessment acting as a measurement to the security of an oil depot becomes more and more important to the modern management. This paper describes several methods of fire safety assessment at home and abroad, and then proposes...
Chinese medicine is a treasure of Chinese nation as well as a crystallization of Chinese working people's wisdom accumulated over thousands of years, Chinese medicine industry has always been a pivotal position in the pharmaceutical market in China. This paper uses the Gray correlation model based on the theory of information entropy, the method of entropy evaluation is to determine the weight. Using...
Mobile visual search business has been prospering since research break-through on content based image retrieval (CBIR) and continuous improving mobile technology. In such search application, user takes photo and uploads photo to server. Retrieval is done at the server side and user gets result from the server. Currently search applications have difficulties. 1) Mobile photos have relatively low qualities,...
Urbanization has sprawled rapidly accompanying with transformation of the society, development of economy, increase of urban population and changes of landscape. The Defense Meteorological Satellite Program (DMSP) Operational Linescan System (OLS) has a unique capability to detect the nocturnal observation of artificial lighting which can reflect urbanization level. Most previous studies had focused...
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