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Web log mining is the most important method in Web data mining, and data preprocessing is the primary work. In order to find more value access mode and reduce the data size from the Web, find the data of users and even between users, this paper puts forward a method of Web log data preprocessing based on user characteristic of interests, and then put forward some concepts such as user interest, user...
However with China entering into the WTO, the big clearance in national seaport will soon realize, immigration traveler's number will be fast increasing, at the same time, anti-illegal immigrant conflict would also be more intense and complicated. Under such condition the analysis of anti-illegal immigrant intelligence has many difficulties. So data mining technology will be introduced in anti-illegal...
Ozonation of dimethylamine (DMA), the most direct and common precursor of high carcinogenic disinfection by-product N-nitrosodimethylamine (NDMA), in aqueous solutions and in the presence of H2O2 was studied at ozone doses of 1.8 mg/L. The removal ratio of DMA increases from 46.7% to 77.1% with the dosage of H2O2 increasing from 0 to 1 mM, and the removal rate can be improved by increasing pH. According...
A spurious-mode-suppressing method is introduced in this paper, aiming at increasing frequency interval between operating mode (TM310 mode) and spurious mode (TM020 mode). By means of CST-MWS, we find that the frequency interval can be increased 0.65 GHz in X-band by the method.
Neighborhood Preserving Embedding (NPE) is an unsupervised linear dimensionality reduction technique which attempts to solve the ldquoout of samplerdquo problem in Locally Linear Embedding (LLE). This is done by introducing a linear transform matrix into LLE, and hence NPE can be perceived as a linear approximation to LLE. In this paper, we modify the original NPE for face recognition by embedding...
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