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Path following algorithms employ information from phase residues or data quality, typically in a independent mode for the difference between the distribution discreteness of residues and the distribution continuity of data quality values. Residues are taken as sources for interface propagation, and the quality of phase data weigh against the propagation velocity; then a combined application of residues...
In classification tasks, labeled data is a necessity but sometimes difficult or expensive to obtain. On the contrary, unlabeled data is usually abundant. Recently, different active learning algorithms are proposed to alleviate this issue by selecting the most informative data points to label. One family of active learning methods comes from Optimum Experimental Design (OED) in statistics. Instead...
The robust algorithm, which is used for tracking human faces in unconstrained video, is built on Tracking-by-detection based on sparse representation. The algorithm works by combining the advantages of face tracking and face detection to improve the accuracy of tracking face in complex environment. The off-line trained face model fits input image to detect face and online trained tracker localizes...
In this paper, we consider the problem of unsupervised feature selection. Recently, spectral feature selection algorithms, which leverage both graph Laplacian and spectral regression, have received increasing attention. However, existing spectral feature selection algorithms suffer from two major problems: 1) since the graph Laplacian is constructed from the original feature space, noisy and irrelevant...
Traditionally, the hinge loss is used to construct support vector machine (SVM) classifiers. The hinge loss is related to the shortest distance between sets and the corresponding classifier is hence sensitive to noise and unstable for re-sampling. In contrast, the pinball loss is related to the quantile distance and the result is less sensitive. The pinball loss has been deeply studied and widely...
This paper describes a digital controller used as power factor correction rectifiers (PFC) which can be implemented by universal chips to achieve the unity power factor instead of application specific integrated circuit (ASIC). The main novelty of this method is that discrete data of sinusoidal wave can be stored in the controller, using this data the system can be simplified by cutting down the number...
A new robust watermarking approach is proposed in wavelet domain in this paper. It is robust to both compressive and geometric attacks. The watermark is embedded into the wavelet transform modulus maxima (WTMM) of the host image, which is shift-invariant compared to the other wavelet domain watermarking approaches. On the other hand, scale and rotation invariants are achieved by the geometric normalization...
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