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We propose a scheme to realize polarization rotation (PR) based on SOI by using two mode converters and a phase shifter. Simulation results from 3D-FDTD show that the PR has extinction ratio (ER) larger than 20 dB and insertion loss less than 0.4 dB in an ultra-wide range from 1450 nm to 1650 nm for both TM0 and TE0. Moreover, the total length of the device is 33μm with a height of 220 nm.
This paper propose a method for sentence ordering in multi-document summarization task, which combine support vector machine (SVM) and Grey Model(GM). Firstly, the method train the SVM with sentences of source documents and predict sentences sequence of summary as primary dataset. Secondly, using Grey Model to process the primary dataset, and achieve the final sequence of summary sentences. Experiments...
Based on the analysis of distribution network service restoration with distributed generation(DGs), in this paper, it is pointed out that there are two deficiency in current research: First, when faults occur, only the power balance of the island is taken into consideration in spite of the calculation of power flow in the network after isolating the island and island itself and also the analysis of...
In this paper, we present a practical method of sentence ordering in multi-document summarization tasks of Chinese language. By using Support Vector Machine (SVM), we classify the sentences of a summary into several groups in rough position according to the source documents. Then we adjust the sentence sequence of each group according to the estimation of directional relativity of adjacent sentences,...
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