数据挖掘:概念与技术第三版精华解读

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"数据挖掘 概念与技术Data_Mining__Concepts_and_Techniques__3rd_Edition.pdf" 本书《Data Mining: Concepts and Techniques》是数据挖掘领域的经典之作,由Jiawei Han, Micheline Kamber 和 Jian Pei三位作者共同撰写。这本第三版的著作深入探讨了数据挖掘的基础概念和技术,对于理解和应用大数据分析具有重要意义。书中涵盖了从数据预处理、模式发现到结果评估的全过程,旨在帮助读者掌握如何在海量数据中发现有价值的信息。 数据挖掘(Data Mining)是指从大量数据中通过算法寻找隐藏模式的过程,它涉及统计学、机器学习、数据库系统和人工智能等多个学科。数据挖掘的主要目标是将原始数据转化为知识,支持决策制定。书中详细介绍了各种数据挖掘方法,包括分类、聚类、关联规则学习、序列模式挖掘以及异常检测等。 分类(Classification)是一种预测建模技术,通过学习已知类别的样本构建模型,然后用该模型对未知类别数据进行预测。聚类(Clustering)则是一种无监督学习方法,通过将数据集中的对象分组,使得同一组内的对象相似度较高,不同组间的对象相似度较低。关联规则学习(Association Rule Learning)用于发现项集之间的频繁模式,如“购买了商品A的顾客通常也会购买商品B”。序列模式挖掘(Sequential Pattern Mining)关注时间序列数据中的模式,例如用户行为序列。异常检测(Anomaly Detection)则用于识别数据集中与正常行为显著不同的点。 数据预处理是数据挖掘过程中的关键步骤,包括数据清洗、数据集成、数据转换和数据规约。数据清洗主要是处理缺失值、异常值和不一致的数据;数据集成将来自多个源的数据合并成单一视图;数据转换将数据转化为适合挖掘的格式;数据规约是为了降低数据复杂性,提高挖掘效率。 书中还介绍了多种数据挖掘工具,如SAS、R、Python等,以及XML和XQuery等相关技术,用于处理结构化和非结构化数据。同时,作者讨论了数据挖掘与在线分析处理(OLAP)和商业智能(BI)的关系,以及如何在实际业务场景中应用数据挖掘技术。 此外,书中的实例和案例研究有助于读者理解理论知识,并将其应用于实际问题解决。通过对数据挖掘的概念和技术的深入探讨,这本书不仅适合数据科学家和分析师,也适合对大数据分析感兴趣的IT专业人士和学生。通过阅读此书,读者可以提升数据分析能力,为企业的决策支持和知识发现提供坚实基础。
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The increasing volume of data in modern business and science calls for more complex and sophisticated tools. Although advances in data mining technology have made extensive data collection much easier, it's still always evolving and there is a constant need for new techniques and tools that can help us transform this data into useful information and knowledge. Since the previous edition's publication, great advances have been made in the field of data mining. Not only does the third of edition of Data Mining: Concepts and Techniques continue the tradition of equipping you with an understanding and application of the theory and practice of discovering patterns hidden in large data sets, it also focuses on new, important topics in the field: data warehouses and data cube technology, mining stream, mining social networks, and mining spatial, multimedia and other complex data. Each chapter is a stand-alone guide to a critical topic, presenting proven algorithms and sound implementations ready to be used directly or with strategic modification against live data. This is the resource you need if you want to apply today's most powerful data mining techniques to meet real business challenges. * Presents dozens of algorithms and implementation examples, all in pseudo-code and suitable for use in real-world, large-scale data mining projects. * Addresses advanced topics such as mining object-relational databases, spatial databases, multimedia databases, time-series databases, text databases, the World Wide Web, and applications in several fields. *Provides a comprehensive, practical look at the concepts and techniques you need to get the most out of your data