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Term weighting schemes have been widely used in information retrieval and text categorization models. In this paper, we first investigate into the limitations of several state-of-the-art term weighting schemes in the context of text categorization tasks. Considering that category-specific terms are more useful to discriminate different categories, and these terms tend to have smaller entropy with...
Distributed key-value caching system has been deployed in many kinds of clouds. The effect of load balancing between each node is crucial in key-value caching system in clouds. Invalidation is a feature of the data in the key-value caching system, and making some cache invalid is efficient instead of adjusting the load location when load balancing. It is worth studying that how to utilize the feature...
Intutionistic fuzzy entropy is interpreted as a measure of uncertainty for IFS including both fuzziness and intuitionism. Then, based on extension of the De Luca-Termini entropy axioms, a new definition of intuitionistic fuzzy entropy is presented. Furthermore, an entropy measure satisfying the proposed axioms is developed and some properties are discussed.
In this paper, an effective technique for leak diagnosis and localization which couples the local entropy difference method (LEDM) to the fast marching method (FMM) is proposed. A computer-based system is described to combine a specific pneumatic circuit with an on-line infrared camera which is used to test the air-tightness of a test vessel. The test object is charged with cryogenic compressed air...
Summary form only given. Lattice Boltzmann (LB) representations are mesoscopic algorithms that exploit a simple collide-stream lattice scheme to recover the dissipative incompressible MHD equations. With the linear collisional relaxation being purely local and the streaming requiring communication only between neighboring lattice sites, LB algorithms have shown ideal parallelization to all cores available...
The traditional methods that use fuzzy comprehensive evaluation model have shortcomings in determining index weight, sometimes the evaluation results can not reflect the water quality truly and fully. In this article, the Yangtze water quality is discussed, which based on the application of unascertained comprehensive evaluation model. To begin with, the weight of index classification is determined,...
Analysing vibration signal is an effective important method for diesel engine fault diagnosis, and its key techniques are feature extraction and pattern recognition. In this paper, wavelet packet decomposition algorithm as an effective method for fault feature extraction is used to decompose the vibration signals, and its percentage of energy band wavelet packet and wavelet packet energy spectrum...
I/Q channel imbalance in quadrature demodulation is one of the major concerns in the design of synthetic aperture radar (SAR) and inverse SAR (ISAR) receivers. The amplitude and phase mismatches result in the additional mirror signal, which acts as a correlated interference superimposed on the desired signal and, hence, degrades the whole system's performance significantly. In this paper, we first...
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