为了从高分辨率遥感影像中高精度的提取各种工业固体废物，提出了基于支持向量机（ＳＶＭ）的工业固体废物特征快速提取算法，首先对遥感影像进行各向异性扩散滤波，然后针对高分辨率遥感影像信息量丰富和工业固体废物堆复杂度高的特点，提出基于1-v-1的SVM的多种工业固体废物的多分类策略，在提高精度的同时，兼顾了工业固体废物特征识别的效率。研究结果表明：ＳＶＭ对工业固体废物判别能力比常规方法有更强的优势，从遥感影像中不仅能准确地辨别出工业固体废物堆的线形特征，还能识别出其材质和类型；该算法能同时识别出多种工业固体废物，执行效率更高。

将能够增强图像纹理信息的分数阶微分算子与变分偏微分方程相结合，运用于图像去噪，提出一种基于分数阶偏微分算子的去噪模型。该模型能够在抑制噪声的同时，更好地保持图像的纹理细节信息。由于分数阶微分算子的阶数必须通过大量的实验人为确定，因此选择通过计算局部方差来反应图像局部纹理复杂度，自适应地确定分数阶微分的阶数。实验表明：自适应分数阶偏微分算子不仅继承了TV模型的优点，并且在保持图像细节信息上的能力更强。

We present a simple approach based on photonic reservoir computing (P-RC) for modulation format identification (MFI) in optical fiber communications. Here an optically injected semiconductor laser with self-delay feedback is trained with the representative features from the asynchronous amplitude histograms of modulation signals. Numerical simulations are conducted for three widely used modulation formats (on–off keying, differential phase-shift keying, and quadrature amplitude modulation) for v

介绍了情感分析中情感特征提取的难点，提出了利用模糊理论和语义模糊化对提取的特征词进行扩充，建立模糊情感语料库，通过与基于句法分析的词性选取的特征词组成的情感特征词典作对比实验，说明模糊理论适合用于网络新闻评论中情感特征词库的提取和扩充．

In this Letter, we present a display system based on a curved screen and parallax barrier, which provides stereo images with a horizontal field of view of 360° without wearing any eyewear, to achieve an immersive autostereoscopic effect. The display principle and characteristics of this display system are studied theoretically in detail. Three consecutive pixels on a curved screen and parallax barrier form a display unit, which can generate separate viewing zones for the left and right eyes, res

A novel tiled Ti:sapphire (Ti:S) amplifier was experimentally demonstrated with >1 J amplified chirped pulse output. Two Ti:S crystals having dimensions of 14 mm× 14 mm× 25 mm were tiled as the gain medium in a four-pass amplifier. Maximum output energy of 1.18 J was obtained with 2.75 J pump energy. The energy conversion efficiency of the tiled Ti:S amplifier was comparable with a single Ti:S amplifier. The laser pulse having the maximum peak power of 28 TW was obtained after the compressor. Mo

An AP-Based Shilling Attack Detector for Collaborative Filtering Recommendation Systems

Static compressive strength prediction of open-hole structure based on non-linear shear behavior and micro-mechanics

Support vector machines based defect recognition in SonicIR using 2D heat diffusion features

Not all languages, e.g. Chinese, have delimiters for words. To extract words from a sentence in these languages, we usually rely on a dictionary for known words. For unknown words, some approaches rely on a domain specific dictionary or a tailor-made learning data set. However, this information may not be available. Another direction is to use unsupervised methods. These methods rely on a goodness measure to evaluate how likely the words are meaningful based on a statistical argument on the give