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Novel collaborative representation (CR)-based nearest neighbor (NN) algorithms are proposed for hyperspectral image classification. The proposed methods are based on a CR computed by an $\ell_{2}$-norm minimization with a Tikhonov regularization matrix. More specific, a testing sample is represented as a linear combination of all the training samples, and the weights for representation are estimated...
In hyperspectral imagery, there exist homogeneous regions where neighboring pixels tend to belong to the same class with high probability. However, even though neighboring pixels are from the same material, their spectral characteristics may be different due to various factors, such as internal instrument noise or atmospheric scattering, which results in misclassification. In this work, the proposed...
The main switching block is presented to distinguish the switching behaviors and the degree of the converter's complexity during one switching period. By adopting the coarse-grained symbolic sequence method, the secondary switching block and secondary symbolic sequence are established in terms of main switching block too. Hence the duplicate symbolic sequence is put forward to detect bifurcation types...
“Open access” (Open Access) is a new vocabulary only emerged in recent years, to solve the contradiction between the price rise of academic journals and the relatively tight of school library funding, a internet freedom communication campaign arose in international academic community, information media and the publishing industry. As a new mode of academic information exchange, the “open access” has...
Multi agent system is one of an effective way for resolving task assignment problem of multi UAVs. The state of agent, especially the anomalous state, would badly reduce the working efficiencies of agents. For this reason, this paper proposes a dynamic group method based on health management in multi agent system to improve the agent efficiency when the agent performs a mission. The method introduces...
Pulsed discharges in hydrogen and its isotopes play critical roles in several applications1, 2: pre-ionization plasmas in field reversed configuration, plasma lens for focusing heavy-ion beams, and gas-puff Z-pinches. However, the initial phase of these discharges is still poor understood.
This paper is aimed at the proposal of a structure for the comprehensive platform for analysis and warning of power grid. The emphasis is placed on the illustrating the function and structure, as well as the algorithm of the platform. The platform can integrate the dispatching systems widely used, including EMS, OMS, Scheduling Plan System, Lightning Location System, Waterpower Scheduling Automation...
More and more cores are integrated onto a single chip to improve the performance of processors and reduce the power consumed by computing. The interconnection of the cores is a new issue for high performance. Network-on-Chip (NoC) is proposed as the promising paradigm for this problem. Because there are many cores on chip, different on-chip interconnection structures have been proposed. Hybrid interconnection...
the knowledge sharing among teachers has been receiving increasing attention, while there are less empirical researches in China now. This study analyzes major factors for knowledge sharing among faculty members. The authors suggest that the achievement of individual motivations is the most influential factor for faculty knowledge sharing, and both the affiliation and collaboration of organization...
Computer organization course is the fundamental course in computer science and engineering. It is also the core course of the undergraduate degree program of College of Computer Science at Zhejiang University. It is important that how to provide supplementary teaching resources and methods to improve the teaching effect. In this paper, we present a Top-Down and Bottom-Up blended teaching model and...
There are two problems emerged while multi-core platform become popular in daily life, no matter for high end or low end. The first is how to fully utilize computing resource of these cores without requirement of large modifications of current software design model. The second is about dividing a piece of serial program into parallel program. However, the latter is the responsibility of compiler,...
Chip MultiProcessor (CMP) has been the main stream in microprocessor design. Shared on-chip L2 caches are widely used in processors with homogeneous CMP architecture. In the paper, we propose a scheduling algorithm for such processors and the shared L2 caches are taken into account in this algorithm. First, the processor cores on chip will be divided into different core groups. The scheduling domain...
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