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In this paper, we propose to apply the nonparallel support vector machine (NPSVM) for positive and unlabeled learning problem(PU learning problem) in which only a small positive examples and a large unlabeled examples can be used. Like Biased-SVM, NPSVM treats the unlabeled set as the negative set with noise, while NPSVM is modified so that, the first primal problem is constructed such that all the...
The problem of model reference control is considered in this paper for discrete-time antilinear systems. A sufficient condition is given for the existence of an output tracking controller. It is shown that the tracking controller is a combination of a feedback stabilizing controller and a feedforward compensator. The compensation gain satisfies two matrix equations, one of which is the so-called con-Sylvester...
This paper is mainly concerned with the problem of how to set the initial conditions of two-dimensional(2-D) block Kalman filter on degraded image for image restoration. The proposed approach incorporates layering and interpolation process into the degraded image that has been corrupted by blur and additive noise. The innovation of this paper are setting reasonable filtering initial conditions which...
The Campbell-Stokes sunshine recorder is an instrument which can measure the solar radiation by using the scorch on the recorder card. It is short for C-S. The weak scorch and the strong scorch represent different solar radiation. The weak scorch is so hard to extract that the radiation represented by the weak scorch always be neglected. The present methods reduce the accuracy of extraction, because...
In this paper, we propose an approach to retrieval XML data with structural context relaxation. We process user query and XML documents as structural term set. Context resemblance is computed based on level weight of element in context, level similarity between elements in longest matched subsequence and other factors. We extend Vector Space Model to answer XML content and structure search. Experiments...
A modular reconfigurable robot system - Xmobot consists of a set of homogenous modules. Xmobot modules have flexible locomotion and transformation capability. Multiple modules can be assembled into diverse configurations. The module state matrix and role-based configuration matrix are presented and constructed for representing the module state and configuration. The method of configuration self-identification...
The minimum variance distortionless response (MVDR) beamformer is a classical filter to reduce the interference plus noise energy without distorting the desired signal. Semidefinite programming (SDP) is a subfield of convex optimization concerned with the optimization of a linear objective function over the intersection of the cone of positive semidefinite matrices. In this paper, we will show MVDR...
When designing an acousto-optic tunable filter (AOTF) imaging spectrometer, the traditional method used a refractive grating to simulate the effects of the AOTF. We studied the acousto-optic interaction in AOTF with exact analysis and found that simulating AOTF with grating was inaccurate due to angular dependence of grating spacing. We proposed a new method to simulate the diffraction using user...
The problem of robust H∞ filtering for polytopic Delta operator systems is investigated. The main purpose is to obtain a stable and proper linear filter such that the filtering error system remains robustly stable with a prescribed H∞ attenuation level. Based on the bounded real lemma, a more efficient evaluation of robust H∞ performance can be obtained by a matrix inequality condition which contains...
In this paper, Considering both positive(preference value is bigger and better) and negative(preference value is smaller and better) factors that affect the risk of software project risk assessment, The coordinate preference risk assessment model of software project based on DEA is established. Conception of risk surface is provided. By introducing fuzzy comprehensive evaluation method based on entropy...
In this paper, we propose an efficient motion estimation scheme for pixel domain downsizing homogeneous H.264 transcoding. We exploit the motion information from the original decoded frames to generate more accurate motion vector (MV) candidates and make a fast selection of the best reference frame for current macroblock (MB) in the down-scaled frame, finally based on the chosen reference frame and...
The AS path prepending approach in BGP is commonly used to perform inter-domain traffic engineering, such as inbound traffic load-balancing for multi-homed ASes. It artificially increases the length of the AS level path in BGP announcements by inserting its local AS number multiple times into outgoing EBGP announcement messages. In this work, we first present a comprehensive study on the characterization...
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