Angebote zu "Mining" (3 Treffer)

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Automated Data Collection with R
47,99 € *
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A hands on guide to web scraping and text mining for both beginners and experienced users of R * Introduces fundamental concepts of the main architecture of the web and databases and covers HTTP, HTML, XML, JSON, SQL. * Provides basic techniques to query web documents and data sets (XPath and regular expressions). * An extensive set of exercises are presented to guide the reader through each technique. * Explores both supervised and unsupervised techniques as well as advanced techniques such as data scraping and text management. * Case studies are featured throughout along with examples for each technique presented. * R code and solutions to exercises featured in the book are provided on a supporting website.

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Stand: 16.07.2019
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Datenmodelle, Datenbanksprachen und Datenbankma...
64,95 € *
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Datenbanken und Datenbanksysteme sind seit vielen Jahren ein unverzichtbarer Bestandteil in kommerziellen Anwendungen. Egal, ob Online bei Reiseportalen und Shops oder klassisch bei Lohnbuchhaltungen und Kontenverwaltung - ohne Datenbanken im Hintergrund wären diese Dienste nicht realisierbar. Gottfried Vossen behandelt in dieser völlig überarbeiteten Auflage sechs große Bereiche. Im einführenden Teil wird der Aufbau von Datenbanken und Datenbanksystemen beschrieben. Im zweiten Teil geht Vossen auf klassische Konzepte wie das Entity-Relationship-Modell, Datenbankentwurf und das relationale Datenmodell ein. Im Hintergrund moderner Anwendungen laufen inzwischen jedoch zumeist objekt-relationale Datenbanken - die in diesem Kontext relevanten Themen wie XML, XQuery und SQL werden in Teil 3 eingehend behandelt, so dass der nächste Schritt, die Datenintegration, in Teil 4 über Architekturkonzepte, Data Warehouses und OLAP sowie Data Mining verstanden und umgesetzt werden kann. Bevor der Autor einen Einblick in neuere Entwicklungen gibt, geht er in Teil 5 auf Datenbanksystemtechniken ein. Wichtige Schlagworte in diesem Zusammenhang sind Datenbank- und Speicherorganisation, Verarbeitung und Optimierung von Anfragen, physischer Datenbankentwurf und Tuning, Transaktionen und transaktionale Garantien, Concurrency Control und Crash Recovery in zentralisierten sowie verteilten Umgebungen.

Anbieter: buecher.de
Stand: 16.07.2019
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Database Systems: Pearson New International Edi...
74,99 € *
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For Database Systems and Database Design and Application courses offered at the junior, senior and graduate levels in Computer Science departments. Written by well-known computer scientists, this introduction to database systems offers a comprehensive approach, focusing on database design, database use, and implementation of database applications and database management systems. The first half of the book provides in-depth coverage of databases from the point of view of the database designer, user, and application programmer. It covers the latest database standards SQL:1999, SQL/PSM, SQL/CLI, JDBC, ODL, and XML, with broader coverage of SQL than most other texts. The second half of the book provides in-depth coverage of databases from the point of view of the DBMS implementor. It focuses on storage structures, query processing, and transaction management. The book covers the main techniques in these areas with broader coverage of query optimization than most other texts, along with advanced topics including multidimensional and bitmap indexes, distributed transactions, and information integration techniques. Resources: Open access Author Website ¿http://infolab.stanford.edu/~ullman/dscb.html ¿includes Power Point slides, teaching notes, assignments, projects, Oracle Programming Guidelines, and solutions to selected exercises. Instructor only Pearson Resources: Complete Solutions Manual (click on the Resources tab above to view downloadable files) Features + Benefits Many real-world examples. Offers a readable and engaging presentation. Extensive treatment of database modeling?Includes detailed and separate explanations of how to use E/R and ODL to design databases. Teaches about this important first step of the planning process. Excellent, up-to-date and detailed coverage of SQL?Includes coverage of object-relational systems and many aspects of the new SQL:1999 standard. Provides a more extensive treatment of query processing than other books on the market. Discussion of the technologies used to connect database programming with C or Java code?Includes discussions of SQL/PSM, SQL/CLI, and JDBC. Gives students practical advice on integrating state-of-the-art technologies with databases. Coverage of advanced issues important to database designers and users. Includes discussions of views, integrity constraints, assertions, triggers, transactions, authorization, and recursion in SQL:1999. Discussions of how to successfully plan a database application before building it. Reflects how these plans are developed in the real world. Coverage of topics such as designing storage structures and implementing a variety of indexing schemes. Shows students how to build efficient database management systems. Extensive coverage of query processing and optimization. Shows students how to fine tune database systems to improve performance. Comprehensive coverage of transaction processing mechanisms for concurrency control and recovery, including distributed and long-duration transactions. Shows how to design complex database systems that can handle real-world business applications. Coverage of information integration, including data warehousing, mediation, OLAP, data-cube systems, and data mining. Exposes readers to cutting edge technology used in business applications. Extensive exercises?In almost every section. Provides students with the opportunity to practice and apply the concepts they´ve learned in each chapter. Please note that GOAL/Gradiance is no longer available with this book. TABLE OF CONTENTS 1 The Worlds of Database Systems 1.1 The Evolution of Database Systems 1.1.1 Early Database Management Systems 1.1.2 Relational Database Systems 1.1.3 Smaller and Smaller Systems 1.1.4 Bigger and Bigger Systems 1.1.5 Information Integration 1.2 Overview of a Database Management System 1.2.1 Data-Definition Language Commands 1.2.2 Overview of Query Processing 1.2.3 Storage and Buffer Management 1.2.4 Transaction Processing 1.2.5 The Query Processor 1.3 Outline of Database-System Studies 1.4 References for Chapter 1 PART I: Relational Database Modeling 2 The Relational Model of Data 2.1 An Overview of Data Models 2.1.1 What is a Data Model? 2.1.2 Important Data Models 2.1.3 The Relational Model in Brief 2.1.4 The Semistructured Model in Brief 2.1.5 Other Data Models 2.1.6 Comparison of Modeling Approaches 2.2 Basics of the Relational Model 2.2.1 Attributes 2.2.2 Schemas 2.2.3 Tuples 2.2.4 Domains 2.2.5 Equivalent Representations of a

Anbieter: buecher.de
Stand: 16.07.2019
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