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Face recognition system based on CNN and LBP features for classifier optimization and fusion

The Journal of China Universities of Posts and Telecommunications 2018年第1期25卷 37-47页

作者： Wu Yulin Jiang Mingyan School of Information Science and Engineering Shandong University

Face recognition has been a hot-topic in the field of pattern recognition where feature extraction and classification play an important role. However, convolutional neural network （CNN） and local binary pattern （LBP） can only extract single features of facial images, and fail to select the optimal classifier. To deal with the problem of classifier parameter optimization, two structures based on the support vector machine （SVM） optimized by artificial bee colony （ABC） algorithm are proposed to classify CNN and LBP features separately. In order to solve the single feature problem, a fusion system based on CNN and LBP features is proposed. The facial features can be better represented by extracting and fusing the global and local information of face images. We achieve the goal by fusing the outputs of feature classifiers. Explicit experimental results on Olivetti Research Laboratory （ORL） and face recognition technology （FERET） databases show the superiority of the proposed approaches.

关键词： CNN features LBP features classifier optimization fusion system face recognition

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ERCP wire systems: The long and the short of it

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World Journal of Gastroenterology 2009年第1期15卷 55-60页

作者： Shilpa Chandrupatla Reddy Peter V Draganov Department of Medicine University of Florida College of MedicineJacksonville Florida 32610 United States Department of Gastroenterology Hepatology and Nutrition University of Florida1600 SW Archer Rd Room HD 602 PO Box 100214 Gainesville Florida 32610 United States

Guidewires are routinely used at the time of endoscopic retrograde cholangiopancreatography (ERCP) to gain and maintain access to the desired duct and aid in the advancement of various devices. Limitations of the traditional long-wire systems have led to the introduction of three proprietary short-wire systems. These systems differ in many respects but share two main principles: They lock a shorter wire in position to allow advancement or removal of various devices without displacement of the wire and they all allow for physician control of the wire. In this comprehensive review, we describe the key features of the three currently available short-wire systems: RX, fusion and V systems. We also focus on the potential benef its and drawbacks that accompany the short-wire concept as a whole and each specif ic system in particular. Although the available data are limited, it appears that the use of the short-wire systems lead to reduced procedure, fluoroscopy and device exchange times, decreased sedation requirements, improved wire stability and increased endoscopist control of the wire. Furthermore, the physician-controlled wire-guided cannulation has the potential to decrease ampullary trauma and the rate of post-ERCP pancreatitis. The short guidewire systems appear to be an improvement over the traditional long-wire systems but further studies directly comparing the two approaches are needed.

关键词： Endoscopic retrograde cholangiopancreatography Guidewires V-system RX system fusion system

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FP（S4）的一些基本性质

FP（S4）的一些基本性质

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作者：吴朝艳华中师范大学

学位级别：硕士

取G=S4,P为S4的一个Sylow-2-子群,则Fp（G）为一个fusion system在本文中,我们提出了有关fusion system的研究现状,掌握了fusion system的一些定义,定理,性质.以Fp（G）为例,我们通过计算得出了：P的fully F-centralised子群,fully F-normalised子群,F的轨道范畴,正规化子,中心化子,K-normaliser, fully K-normalised子群,weakly F-closed子群,strongly F-closed子群,F-centric子群,fusion system的商,正规fusion system,单的fusion system等结果,讨论了Fp（G）的一些基本性质,掌握了一些相关的定理,推论及常用的结论,得出了有关fusion system的相关结论的具体形式.我们还对Fp（G）中的一些结论作举例说明.文章第三章第六节还从计算的角度再次验证了关于fusion system的几个主要定理.

关键词：态射对象 fusion system Fully F-normalised子群 Fully F-cenlralised子群 Sylow-p-子群

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