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基于OpenCV实现的图片识别功能。 学习示例： 脸部+眼部检测 马路行人检测 特征匹配（示例：微信“跳一跳”棋子匹配）

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四川大学《计算机导论》《离散数学》《数据结构考试试卷》（2017前，包括2017），学弟学妹们要考好基础知识，还是多看看题库和书本，积极消化，川大历年考试都差不多的题型，上传的时候还没来得及写答案，只有试卷，但是大部分都是能找到答案的，希望对你们有用！

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Building Trading Bots Using JavaEnglish | 6 Jan. 2017 | ISBN: 1484225198 | 300 Pages | PDF | 6.22 MBBuild an automated currency trading bot from scratch with java. In this book, you will learn about the nitty-gritty of automated trading and have a closer look at Java, the Spring Framework, event-Building Trading Bots Using Javahekhar VarshneyGrangesSwitzerlandISBN13(pbk):978-1-4842-2519-6ISBN-13(electronic): 978-1-4842-2520-2DOI10.1007/978-1-4842-2520-2Library of Congress Control Number: 2016961228Copyright o 2016 by Shekhar VarshneyThis work is subject to copyright All rights are reserved by the Publisher, whether the wholeor part of the material is concerned, specifically the rights of translation, reprinting, reuse ofillustrations, recitation, broadcasting, reproduction on microfilms or in any other physicalway, and transmission or information storage and retrieval, electronic adaptation, computersoftware, or by similar or dissimilar methodology now known or hereafter developedTrademarked names, logos, and images may appear in this book. Rather than use a trademarksymbol with every occurrence of a trademarked name, logo, or image we use the names, logos,nd images only in an editorial fashion and to the benefit of the trademark owner, with nointention of infringement of the trademarkThe use in this publication of trade names, trademarks, service marks, and similar terms, even ifthey are not identified as such, is not to be taken as an expression of opinion as to whetheror notthey are subject to proprietary rightsWhile the advice and information in this book are believed to be true and accurate at thedate of publication, neither the authors nor the editors nor the publisher can accept any legalresponsibility for any errors or omissions that may be made. The publisher makes no warranty,express or implied, with respect to the material contained hereinManaging Director: Welmoed SpahrLead Editor: Steve AnglinEditorial Board: Steve Anglin, Pramila Balan, Laura Berendson, Aaron Black, Louise Corrigan,Jonathan gennick, Robert Hutchinson, Celestin Suresh John, Nikhil KarkalJames Markham, Susan McDermott, Matthew Moodie, Natalie Pao, Gwenan SpearingCoordinating Editor: Mark PowersCopy Editor: Kezia EndsleyCompositor: SPi GlobalIndexer: SPi GlobaArtist: SPi GlobalDistributed to the book trade worldwide by Springer Science+ Business Media New York,233 Spring Street, 6th Floor, New York, NY 10013. Phone 1-800-SPRINGER, fax(201)348-4505e-mailorders-ny@springer-sbm.comorvisitwww.springeronline.com.ApressMedia,Llcisa California LlC and the sole member(owner) is Springer Science Business Media FinanceInc(SSBM Finance Inc). SSBM Finance Inc is a Delaware corporationForinformationontranslationspleasee-mailrights@apress.comorvisitwww.apress.comApress and friends of ed books may be purchased in bulk for academic, corporate, or promotionaluse eBook versions and licenses are also available for most titles For more information referenceourSpecialbUlkSales-ebookLicensingwebpageatwww.apress.com/bulk-salesAny source code or other supplementary materials referenced by the author in this text areavailabletoreadersatwww.apress.com.Fordetailedinformationabouthowtolocateyourbookssourcecodegotowww.apress.com/source-code/.ReaderscanalsoaccesssourcecodeatSpringerlink in the Supplementary Material section for each chapter.Printed on acid-free paperedicated to the angels in my lifemy mother, my wife Preshita, and my two daughters Mihika and anyaLast but not the least, my college professor, Dr. Rajat Moona,who sowed the seeds of computer programming in my dnaContents at a glanceAbout the authorChapter 1: Introduction to Trading Bota.Chapter 2: Account Management27Chapter 3: Tradeable Instruments47Chapter 4: Event Streaming: Market Data EventsChapter 5: Historic Instrument Market Data aeEERaar75Chapter 6: Placing Orders and trades97Chapter 7: Event Streaming: Trade/Order/Account Events159Chapter 8: Integration with Twitter aamna■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■175Chapter 9: Implementing Strategies.am.203Chapter 10: Heartbeating ammmmmmmmmmmn 219Chapter 11: E-Mail Notifications ammmmatmmammmmmmmnmamman 231Chapter 12: Configuration, Deployment, and Running the Bot 243Chapter 13: Unit Testing■■■■■■■■■■■■口■■■■■■■■■■■■■■■■■■■口■■■■■■■■■■■■■■■■■■口■■■■■263Index…277ContentsAbout the author,i币Chapter 1: Introduction to Trading Bot m mmmemmIRD■■■■■■■■■■■■■■■■■■■■■■■■■What Is a Trading Bot?Why do We need a trading bot?...3The capabilities of the Trading BotDesign goalsCode organization and software Stack Used .OANDA REST API as Reference Implementation.m....ammann. 8Opening an oanda practice Account80 ANDA JS0 N Keys…………Constructor Dependencies for OANDA Implementations15Event-Driven architectureG0 ogle eventBus…18Provider helper Interface20Trading Config class.........mmonann......mtnonnn.......tnn 22Obtaining the Source Code.aaeeaaaee... 24Try It Yourself section..aaaaaa.. 24Chapter 2: Account Managementa27Account provider interface31A Concrete Implementation for AccountDataProvider32Encapsulating Everything Behind a Generic AccountlnfoService37Try It yourself43VIlCONTENTSChapter 3: Tradeable Instruments47InstrumentA Concrete Implementation for InstrumentDataProvider52Encapsulating Everything Behind a Generic Instrumentservice56Try It yourself58Chapter 4: Event Streaming: Market Data Events mmmmmmmmmm. 61Streaming Market Data Interface.A Concrete Implementation for MarketData StreamingService .m..63Downstream Market data event disseminationMarketEventcallback……69Try It Yourself,…70Chapter 5: Historic Instrument Market Data mmmmmmmm 75How to read a candlestick75Enum Defining the Candlestick Granularity76Define pojo to hold candlestick information77Historical Data Provider Interface79A Concrete Implementation for HistoricMarketDataProvidern81Discussion An Alternate Database Implementation85Candlesticks for Moving Average Calculations....88MovingAverage calculation Service89Try lt YourselfChapter 6: Placing Orders and Trades■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■97Order pojo definition98Order Management provider Interface101A Concrete Implementation for Order ManagementProvider,103A Simple orderInfoService,115CONTENTSValidating Orders Before Execution: PreOrderValidationService... 116Putting It All Together in an OrderExecution Service .mmmm... 121Trade pojo definition124Trade Management provider Interface127A Concrete Implementation for TradeManagementProvider129Encapsulating Read Operations Behind TradelnfoService.....m. 136Try It yourself144Chapter 7: Event Streaming: Trade/order/Account Events m 159Streaming Event Interface161A Concrete Implementation for Events StreamingService162Try It Yourself171Chapter 8: Integration with Twitter■■■■■■■■■■■■■■■■■■■■175Creating a Twitter Application175Spring Social180Using and Configuring Spring Social180Harvesting FX Tweets181Tweetharvester Interface wmmm. 185XTWeethandler Interface,,,………AbstractFxtweethandler base class186User-Specific TweetHandlersTry lt Yourself.Chapter 9: Implementing Strategies.aa203Copy Twitter Strategy204Fade the Move Strategy210Try It Yourself214CONTENTSChapter 10: Heartbeating ammammmmmmmmmmmmmmm 219HeartBeatPayload. ..m......m. 219Streaming the Heartbeat Interface220A Concrete Implementation for HeartBeatstreamingService221HeartBeatcallback Interface223DefaultheartBeatservice223Try It Yourself226Chapter 11: E-Mail notifications n231Notification Design.EmailPayLoad poJoEmailContentgenerator interface……232Sample Implementations.EventEmailNotifier service mm...m. 235Try It Yourself.237Chapter 12: Configuration, Deployment, and running the bot m 243Configuring the Trading Bot243Core Beans configuration244Twitter-Related Beans Configuration.....................247Provider Beans Configuration248Strategies configuration…254Services Configuration254Building the Bot...,,,,,…,,……256Running the bot.....,,……259CONTENTSChapter 13: Unit Testinga263Using Mockito as a Mocking Framework.Mocking Http iNteraction..............m....................e........................ 264Mocking Streams.The versatile verify Mockit0…....,.,,…271Mocking Twitter Interaction .EclEmma Code Coverage Tool for Eclipse ide.nDDDDDDDDDm274Index■■■■■■■■■■■■■■■■■■■口En277

基于粒子群算法的多目标搜索算法，结合具体的案例进行了分析，验证了粒子群算法的可行性

【实例简介】采用VS2008做了一个对话框控件，在控件中可以进行四则运算，并把运算公式添加到列表控件中，可以对列表控件进行修改、更新、删除等操作，最后把列表控件中的内容按一定格式保存在txt文件中，同时也可以从文件中读取数据显示在列表控件上。此外，添加了在界面上进行二维绘图操作的功能，对初学者会有较大帮助。

本文 重 点 研究点云数据编码压缩方法和邻域搜索算法。(1)、根据点云数据的特点，建立八叉树模型，对原始数据进行坐标变换，映射到正整数空间，在此基础上计算数据的Morton码。对Morton码排序、求差，统计码长，提出了一种改进Morton码的方法。该方法提高了Morton编码的连续性，降低了八叉树的深度，减少了数据存储量。并可应用三维行程编码等方法进一步压缩优化后的Morton码。试验结果证明了算法的有效性。(2)、把应用在四叉树模型的编码邻域算法推广到空间的八又树模型，并与栅格邻域搜索算法做定性比较。此外，还简单介绍了Delaunay三角划分方法及其优化准则，Hoppe的三角网格重构算法。

能实现web端以及手机端同时使用

高程异常计算，GPS高程转换，可快速对各经纬度地区的高程异常进行获得，从而用GPS的大地高得到正常高