专业英语人工智能最终版课件.ppt

《专业英语人工智能最终版课件.ppt》由会员分享，可在线阅读，更多相关《专业英语人工智能最终版课件.ppt（30页珍藏版）》请在三一办公上搜索。

1、,ArtificialIntelligence,Search engines,Labor,Appliances,Science,content,Definition Meanings History and greatmen Developing and difficulties Knowledge Current situation Applications and Achievements Future,Definition 定义,Artificial Intelligence(AI)is the intelligence of machines and the branch of com

2、puter science that aims to create it.Definition in AI textbook:”the study and design of intelligent agents”人工智能（AI）是机器智能与计算机科学，旨在创建它的分支。在AI教科书的定义：“学习的智能代理的设计。”,人工智能是计算机科学的前沿，充满机遇和挑战。“A student in physics might reasonably feel that all the good ideas have already been taken by Galileo,Newton,Einstein

3、,and the rest,and that it takes many years of study before one can contribute new ideas,AI,on the other hand,still has openings for a full-time Einstein.”_Artificial Intelligence:A modern Approach（一位在物理学领域的学生会理所当然的认为所有的好点子已经被伽利略，牛顿，爱因斯坦和其他人，它需要许多年前的研究能做出贡献的新思路，另一方面，AI，仍然作为一个全职的爱因斯坦。）,The exciting ne

4、w effort to make computers thinks machine with minds,in the full and literal sense”(Haugeland 1985),“The art of creating machines that perform functions that require intelligence when performed by people”(Kurzweil,1990),“The study of mental faculties through the use of computational models”(Charniak

5、 et al.1985),A field of study that seeks to explain and emulate intelligent behavior in terms of computational processes”(Schalkol,1990),Systems that think like humans,Systems that think rationally,Systems that act like humans,Systems that act rationally,Views of AI fall into four categories:,What i

6、s AI?,Enthusiasm（狂热）,Computational Intelligence,国际人工智能联合会议,The History of AI,Secondary Translation-Machine Translation the spirit is willing but the flesh is weakthe vodka is good but the meat is rottenCombinatorial explosion problem(组合爆炸)The fact that a program can find a solution in principle does

7、 not means that the program contains any of the mechanisms needed to find it in practice.Perceptron limitations(感知机局限性)A two-input perceptron cannot be trained to recognize when its two inputs are different.,Difficulties,McCarthy麦卡锡,Minsky明斯基,Shannon香农,Greatmen,The American scholar McCarthy who is c

8、onsidered the father of artificial intelligence of organized a Society,many experts and scholars gathered together for a discussion of up to two months.Inviting them to participate in the Summer Dartmouth Artificial Intelligence Research Society.Since then,this field is named artificial intelligence

9、,McCarthy麦卡锡,Example,In machine learning,in 1957 Rosenblatt(罗森布拉特)successfully developed Perceptron(感知机);在1957年机器产生时代，罗森布拉特成功的研制出感知机。,achievement,In theorem proving,in 1958 Wang Hao in the IBM-704 machine with a 3-5 minute proved all 220 theorem“Principia Mathematica”in the relevant propositional ca

10、lculus;In 1965,Robinson made due to the resolution principle(归结原理);定理证明，1958年王皓用IBM-704机用3-5分钟的证明所有220定理“数学原理”中的相关命题演算;1965年，罗宾逊作出了应有的决议原则。,In pattern recognition(模式识别),1959 Selfridge(塞尔福里奇)launcheda pattern recognition program;1965 Roberts prepared a distinguished building block construction proced

11、ures(可分辨积木构造程序);1959年塞尔弗里奇用模式识别推出了模式识别程序;1965年罗伯茨准备了杰出的建筑模块结构的程序。,In terms of problem solving(问题求解):1960 Newell(纽厄尔)compiled a universal problem solver(GPS),can solve 11 different types of problems;In expert systems(专家系统):the results of the 1968 Feigenbaum(费根鲍姆)developed DENDRAL expert system and pu

12、t into use;,achievement,在专家系统：1968的结果费根鲍姆开发DENDRAL“专家系统”并投入使用；,在解决问题方面：1960纽厄尔编译一个普遍的问题解决者(GPS),可以解决11个不同类型的问题;,May 2019,the U.S.IBMs“Deep Blue”supercomputer beat the world chess champion Garry Kasparov(卡斯帕罗夫).,The great achievements of artificial intelligence,2019五月，美国IBM的“深蓝”超级计算机击败了国际象棋世界冠军卡斯帕罗夫（

13、卡斯帕罗夫）。,Computational Intelligence thriving(90s-now),Artificial Neural Network人工神经网络Genetic Algorithm遗传算法Fuzzy Reasoning模糊推理Particle Swarm Optimization粒子群优化Artificial Immune System人工免疫系统,Artificial intelligence(人工智能)Turing test(图灵测试)pattern recognition(模式识别)expert systems(专家系统)Neural Network(神经网络),T

14、he Turing test(1936),Alan turing（1912-1954）The Turing test is a test of a machines ability to exhibit intelligent behavior or indistinguishable from that of a human.If the judger cannot reliably tell the machine from the human,the machine is said to have passed the test.图灵测试是一种测试机器的能力,表现出人类的智能行为或难以区

15、分的。如果测试的人不能明确地区分出人类和机器,这台机器就通过了测试。,Applications,The main areasGeneral machine intelligence,conversationl behavior,data-mining,一般机器智能,对话行为,数据挖掘Driverless cars,robot soccer and games无人驾驶汽车,机器人足球和游戏,Robot soccer Conversational behavior,A comprehensive survey paper provides a thorough review of intellig

16、ent systems in process engineering.The process control research in this area has largely been concerned with three AI methods:knowledge-based systems,neural nerworks and fuzzy logic.一个广泛的调查提供了一个全面的关于智能技术在工程进程中的一系列问题的复查，针对此领域的这项进程控制调查研究主要集中在三个方面：知识库系统、神经网络和模糊逻辑。,AI methods:knowledge-based systems,Neu

17、ral networks and Fuzzy logic provides,人工智能主要集中在三个方面：知识库系统、神经网络和模糊逻辑,Knowledge-based systems(KBS),also referred to as expert systems,use a set of“rules”to perform logical inferences about the state of a process operation or some other activityof interest.Industrial applications of KBS systems have la

18、rgely been concerned with supervisory,which have included the following problems:complex control schemes,recovery from extreme conditons and emergency shutdowns.知识库系统（KBS）也就是专家系统，就是应用一系列的规则对操作过程的状态或其他关心的行为作出逻辑推理。知识库系统在工业上主要应用在管理活动上。管理控制的应用包括这样一些问题：复杂管理计划、从极端条件和紧急停工的恢复。,Neural networks provide a powe

19、rful approach for developing empirical nonlinear models for variety of physical phenomena.Neural networks also provide a promising approach for pattern recognition problems such as senor data analysis and faulty detection where traditional modeling techniques are not easily applied.神经网络为发展大量物理现象的非线性

20、经验模型提供了有效的途径。神经网络同样为模式识别问题提供了非常有前景的途径，如传感数据分析、错误检测等这些传统模型已不能轻松应用的领域。,Fuzzy logic provides conceptual framework for practical problems where some process variable are represented as“linguistic variables”which have only a few possible values(e.g.very large,large,normal,small etc.).Thus applications of

21、 fuzzy logic and fuzzy control can be viewed as special cases of KBS,which have fuzzy boundaries for the rules.模糊逻辑为实际问题提供了一个概念上的框架。在这些实际问题中，过程的变化被描述为语言上的变化，这些变化仅仅只有一些可能值（如很大、大、正常、小等）。因此，模糊逻辑和模糊控制就可看作是知识库系统的特例，其规则之间的界限是模糊的。,Meaning of AI,The most important fields of research in this area are informa

22、tion processing,pattern recognition,game-playing computer,and applied fields such as medical diagnosis.Present research in information processing deals with programs that enable a computer to understand written or spoken information and to produce summaries,answer specific questions or redistribute

23、information to users interested in specific areas of this information.对人工智能的研究体现在几个最重要的领域：信息处理、模式 识 别、博 弈计算 机和 医疗诊断。当 前对信息处理的 研究就是通过编程使计算机能够识别手写和语音信息、对信息做出概括、回答特定问题，并将信息重分配给对该信息的特定部分感兴趣的用户。,In medicine,programs have been developed that analyze the disease symptoms,medical history,and laboratory test

24、 results of a patient,and then suggest a diagnosis to the physician.The diagnostic program is an example of so-called expert systemsprograms designed to perform takes in specialized areas as a human would.,在医学上，程序还发展到根据病人的的症状、药物史和实验室检查的结果，给医师提出诊断建议。这个诊断程序就是所谓的专家系统的一个实例，专家系统就是在特殊领域可以像人一样完成工作的程序。,Thats all,Thankyou,29,谢谢！,30,