在线阅读本书 A decade after the cold war ended, policy makers and academics foresaw a new era of peace and prosperity, an era in which democracy and open trade would herald the "end of history." The terrorist attacks of September 11, 2001, sadly shattered these idyllic illusions, and John Mearsheimer's masterful new book explains why these harmonious visions remain utopian. To Mearsheimer, great power politics are tragic because the anarchy of the international system requires states to seek dominance at one another's expense, dooming even peaceful nations to a relentless power struggle. Mearsheimer illuminates his theory of offensive realism through a sweeping survey of modern great power struggles and reflects on the bleak prospects for peace in Europe and northeast Asia, arguing that the United States's security competition with a rising China will intensify regardless of "engagement" policies.

本书介绍了信息检索（IR）中的关键问题，以及这些问题如何影响搜索引擎的设计与实现，并且用数学模型强化了重要的概念。对于网络搜素引擎这一重要的话题，书中主要涵盖了在网络上广泛使用的搜索技术。 本书适用于高等院校计算机科学或计算机工程专业的本科生、研究生，对于专业人士而言，本书也不失为一本理想的入门教材。

本书对国际政治的基础话题和基本概念进行了精练、透彻的阐释，并因此得到学术界普遍认可。它不偏不倚地介绍了国际关系的主要理论范式--包括自由主义和现实主义，以及马克思主义、女性主义和建构主义。它为学生在个人、国家和国际体系三个层次上理解世界政治事务提供了全面的分析工具。为了反映世界政治中最近的发展和辩论，第三版在前两版的基础上进行了更新，对政府间国际组织（如联合国）和非政府组织（包括恐怖组织与和平组织）进行了深入的探讨。

封面图片为英国伯明翰塞尔福瑞吉百货大楼，其极具线条感的轮廓外型优美，犹如水波的流动。其外表悬挂了1.5万个铝碟，创造出一种极具现代气息的纹理装饰效果，有如夜空下水流的波光粼粼，闪烁于月光之下，使建筑的商业氛围表现到极致。设计该建筑的英国“未来系统建筑事物所”，将商场内部围合成一个顶部采光的中庭，配以交叉的自动扶梯，使购物环境呈现出一种凝聚的向心力和商业广告的展示效应。作为英国第二商业城市伯明翰的建筑地标，人们称该建筑为“未来的百货商店”。因其设计构思的前卫性，该建筑获得2004年英国皇家建筑学会的“建筑设计奖”和2004年“英国皇家工艺美术委员会奖”等多个奖项。 本书从计算机科学领域的角度出发，介绍了信息检索的基础知识，并对当前信息检索的发展做了回顾，重点介绍了搜索引擎的核心技术，如文档分类和文档聚类问题，以及机器学习和数值计算方法。书中所有重要的思想都用示例进行了解释，生动形象，引人入胜，实现了理论与实战的完美结合。 本书的三位作者均是信息检索领域的顶级专家，两位来自学术教育界，一位来自硅谷业界，使本书既具备深厚的理论基础，又代表了尖端科技水准。因此，该书甫一出版，即被奉为该领域的权威著作，备受瞩目。目前已被众多世界名校采用为信息检索课程的教材。

Class-tested and coherent, this groundbreaking new textbook teaches classic web information retrieval, including web search and the related areas of text classification and text clustering from basic concepts. Written from a computer science perspective by three leading experts in the field, it gives an up-to-date treatment of all aspects of the design and implementation of systems for gathering, indexing, and searching documents; methods for evaluating systems; and an introduction to the use of machine learning methods on text collections. All the important ideas are explained using examples and figures, making it perfect for introductory courses in information retrieval for advanced undergraduates and graduate students in computer science. Based on feedback from extensive classroom experience, the book has been carefully structured in order to make teaching more natural and effective. Although originally designed as the primary text for a graduate or advanced undergraduate course in information retrieval, the book will also create a buzz for researchers and professionals alike. Contents 1. Information retrieval using the Boolean model; 2. The dictionary and postings lists; 3. Tolerant retrieval; 4. Index construction; 5. Index compression; 6. Scoring and term weighting; 7. Vector space retrieval; 8. Evaluation in information retrieval; 9. Relevance feedback and query expansion; 10. XML retrieval; 11. Probabilistic information retrieval; 12. Language models for information retrieval; 13. Text classification and Naive Bayes; 14. Vector space classification; 15. Support vector machines and kernel functions; 16. Flat clustering; 17. Hierarchical clustering; 18. Dimensionality reduction and latent semantic indexing; 19. Web search basics; 20. Web crawling and indexes; 21. Link analysis. Reviews “This is the first book that gives you a complete picture of the complications that arise in building a modern web-scale search engine. You'll learn about ranking SVMs, XML, DNS, and LSI. You'll discover the seedy underworld of spam, cloaking, and doorway pages. You'll see how MapReduce and other approaches to parallelism allow us to go beyond megabytes and to efficiently manage petabytes." -Peter Norvig, Director of Research, Google Inc. "Introduction to Information Retrieval is a comprehensive, up-to-date, and well-written introduction to an increasingly important and rapidly growing area of computer science. Finally, there is a high-quality textbook for an area that was desperately in need of one." -Raymond J. Mooney, Professor of Computer Sciences, University of Texas at Austin “Through compelling exposition and choice of topics, the authors vividly convey both the fundamental ideas and the rapidly expanding reach of information retrieval as a field.” -Jon Kleinberg, Professor of Computer Science, Cornell University

在线阅读本书 THE SEMINAL WORK ON FOREIGN POLICY AND THE ART OF DIPLOMACY Moving from a sweeping overview of history to blow-by-blow accounts of his negotiations with world leaders, Henry Kissinger describes how the art of diplomacy has created the world in which we live, and how America's approach to foreign affairs has always differed vastly from that of other nations. Brilliant, controversial, and profoundly incisive, Diplomacy stands as the culmination of a lifetime of diplomatic service and scholarship. It is vital reading for anyone concerned with the forces that have shaped our world today and will impact upon it tomorrow.

本书介绍了有关信息检索方面的所有新变化，而且其组织使读者既可以对现代信息检索有一个全面的了解，又可以获取现代信息检索所有关键主题的详细知识。本书的主要内容由信息检索领域的代表人物Baeza-Yates和Ribeiro-Neto编写，对于那些希望深入研究关键领域的读者，书中还提供了由其他主要研究人员编写的关于特殊主题的发展现状的内容。

这本由著名学者和前政策制定参与者——小约瑟夫•奈所撰写的教科书，简明扼要、深入透彻地介绍了世界政治研究。它熟练地把历史与理论结合起来，评说国际行为体之间的冲突与合作，从而为学生提供了一个理解当今国际事务的框架。《理解国际冲突》是一部可读性很强的概览性著作，它阐述了从第一次世界大战到现代恐怖主义、信息革命以及全球治理的诸多内容，回答和提出了有关国际关系未来发展的重要问题。

HIGHLIGHT New edition of top-selling book on the new version of Lucene--the core open-source technology behind most full-text search and "Intelligent Web" applications. DESCRIPTION When Lucene first hit the scene five years ago, it was nothing short of amazing. By using this open-source, highly scalable, super-fast search engine, developers could integrate search into applications quickly and efficiently. A lot has changed since then--search has grown from a "nice-to-have" feature into an indispensable part of most enterprise applications. Lucene now powers search in diverse companies including Akamai, Netflix, LinkedIn, Technorati, HotJobs, Epiphany, FedEx, Mayo Clinic, MIT, New Scientist Magazine, and many others. Some things remain the same, though. Lucene still delivers high-performance search features in a disarmingly easy-to-use API. Due to its vibrant and diverse open-source community of developers and users, Lucene is relentlessly improving, with evolutions to APIs, significant new features such as payloads, and a huge increase (as much as 8x) in indexing speed with Lucene 2.3. And with clear writing, reusable examples, and unmatched advice on best practices, Lucene in Action, Second Edition is still the definitive guide to developing with Lucene. KEY POINTS * Completely revised and updated to current Lucene 2.3 APIs. * Practical coverage, like how to index MS Word, PDF, HTML, and XML. * Full introduction to Intelligent Web topics like smart searching, sorting, and filtering.

《搜索引擎:信息检索实践(英文版)》介绍了信息检索（1R）中的关键问题。以及这些问题如何影响搜索引擎的设计与实现，并且用数学模型强化了重要的概念。对于网络搜索引擎这一重要的话题，书中主要涵盖了在网络上广泛使用的搜索技术。 《搜索引擎:信息检索实践(英文版)》适用于高等院校计算机科学或计算机工程专业的本科生、研究生，对于专业人士而言，《搜索引擎:信息检索实践(英文版)》也不失为一本理想的入门教材。