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Author : Sheldon Hsienlin Shen
Publisher :
ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (176 download)
Download or read book A Fuzzy Approach to Query Processing in Incomplete Databases written by Sheldon Hsienlin Shen and published by . This book was released on 1986 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Yunjun Gao
Publisher : Springer Nature
ISBN 13 : 303101863X
Total Pages : 106 pages
Book Rating : 4.0/5 (31 download)
Download or read book Query Processing over Incomplete Databases written by Yunjun Gao and published by Springer Nature. This book was released on 2022-06-01 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Incomplete data is part of life and almost all areas of scientific studies. Users tend to skip certain fields when they fill out online forms; participants choose to ignore sensitive questions on surveys; sensors fail, resulting in the loss of certain readings; publicly viewable satellite map services have missing data in many mobile applications; and in privacy-preserving applications, the data is incomplete deliberately in order to preserve the sensitivity of some attribute values. Query processing is a fundamental problem in computer science, and is useful in a variety of applications. In this book, we mostly focus on the query processing over incomplete databases, which involves finding a set of qualified objects from a specified incomplete dataset in order to support a wide spectrum of real-life applications. We first elaborate the three general kinds of methods of handling incomplete data, including (i) discarding the data with missing values, (ii) imputation for the missing values, and (iii) just depending on the observed data values. For the third method type, we introduce the semantics of k-nearest neighbor (kNN) search, skyline query, and top-k dominating query on incomplete data, respectively. In terms of the three representative queries over incomplete data, we investigate some advanced techniques to process incomplete data queries, including indexing, pruning as well as crowdsourcing techniques.
Author : Sheldon Hsienlin Shen
Publisher :
ISBN 13 :
Total Pages : 23 pages
Book Rating : 4.:/5 (177 download)
Download or read book Database Relaxation written by Sheldon Hsienlin Shen and published by . This book was released on 1986 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Yan, Li
Publisher : IGI Global
ISBN 13 : 1466687681
Total Pages : 652 pages
Book Rating : 4.4/5 (666 download)
Download or read book Handbook of Research on Innovative Database Query Processing Techniques written by Yan, Li and published by IGI Global. This book was released on 2015-09-25 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research and development surrounding the use of data queries is receiving increased attention from computer scientists and data specialists alike. Through the use of query technology, large volumes of data in databases can be retrieved, and information systems built based on databases can support problem solving and decision making across industries. The Handbook of Research on Innovative Database Query Processing Techniques focuses on the growing topic of database query processing methods, technologies, and applications. Aimed at providing an all-inclusive reference source of technologies and practices in advanced database query systems, this book investigates various techniques, including database and XML queries, spatiotemporal data queries, big data queries, metadata queries, and applications of database query systems. This comprehensive handbook is a necessary resource for students, IT professionals, data analysts, and academicians interested in uncovering the latest methods for using queries as a means to extract information from databases. This all-inclusive handbook includes the latest research on topics pertaining to information retrieval, data extraction, data management, design and development of database queries, and database and XM queries.
Author : Frederick E. Petry
Publisher : Springer Science & Business Media
ISBN 13 : 1461313198
Total Pages : 236 pages
Book Rating : 4.4/5 (613 download)
Download or read book Fuzzy Databases written by Frederick E. Petry and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents the results of approximately 15 years of work from researchers around the world on the use of fuzzy set theory to represent imprecision in databases. The maturity of the research in the discipline and the recent developments in commercial/industrial fuzzy databases provided an opportunity to produce this survey. In this introduction we will describe briefly how fuzzy databases fit into the overall design of database systems and then overview the organization of the text. FUZZY DATABASE LANDSCAPE The last five years have been witness to a revolution in the database research community. The dominant data models have changed and the consensus on what constitutes worthwhile research is in flux. Also, at this time, it is possible to gain a perspective on what has been accomplished in the area of fuzzy databases. Therefore, now is an opportune time to take stock of the past and establish a framework. A framework should assist in evaluating future research through a better understanding of the different aspects of imprecision that a database can model [ 1 l.
Author : Galindo, Jos
Publisher : IGI Global
ISBN 13 : 159904854X
Total Pages : 899 pages
Book Rating : 4.5/5 (99 download)
Download or read book Handbook of Research on Fuzzy Information Processing in Databases written by Galindo, Jos and published by IGI Global. This book was released on 2008-05-31 with total page 899 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book provides comprehensive coverage and definitions of the most important issues, concepts, trends, and technologies in fuzzy topics applied to databases, discussing current investigation into uncertainty and imprecision management by means of fuzzy sets and fuzzy logic in the field of databases and data mining. It offers a guide to fuzzy information processing in databases"--Provided by publisher.
Author : Mark Levene
Publisher : Springer Science & Business Media
ISBN 13 : 0857293494
Total Pages : 632 pages
Book Rating : 4.8/5 (572 download)
Download or read book A Guided Tour of Relational Databases and Beyond written by Mark Levene and published by Springer Science & Business Media. This book was released on 2012-09-18 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: Addressing important extensions of the relational database model, including deductive, temporal, and object-oriented databases, this book provides an overview of database modeling with the Entity-Relationship (ER) model and the relational model. The book focuses on the primary achievements in relational database theory, including query languages, integrity constraints, database design, computable queries, and concurrency control. This reference will shed light on the ideas underlying relational database systems and the problems that confront database designers and researchers.
Author : Deyi Li
Publisher :
ISBN 13 :
Total Pages : 456 pages
Book Rating : 4.:/5 (43 download)
Download or read book A Fuzzy PROLOG Database System written by Deyi Li and published by . This book was released on 1990 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Until this book, the available literature on fuzzy sets has been, at best, scattered throughout industrial and university libraries. Encapsulated here is a sound discussion of the basic theoretical and practical aspects involved in fuzzy database systems. With a practical, hands-on, applications-oriented approach, it develops computer models for applications to decision-making processes, introducing the basic notion of relative grades via the fuzzy set theoretic approach. Also covers fuzzy relational databases and their calculus, and the fuzzy relational (structured) query language (FSQL). The last sections present methods for treating the incomplete information in fuzzy PROLOG database (FPDB) systems. Several examples of knowledge representation, expert systems, fuzzy control, and fuzzy clustering and information retrieval illustrate the theory. An extended sample database is used throughout the book.
Author : Cornelius T. Leondes
Publisher : Academic Press
ISBN 13 : 0080530281
Total Pages : 975 pages
Book Rating : 4.0/5 (85 download)
Download or read book Database and Data Communication Network Systems, Three-Volume Set written by Cornelius T. Leondes and published by Academic Press. This book was released on 2002-07-09 with total page 975 pages. Available in PDF, EPUB and Kindle. Book excerpt: Database and Data Communication Network Systems examines the utilization of the Internet and Local Area/Wide Area Networks in all areas of human endeavor. This three-volume set covers, among other topics, database systems, data compression, database architecture, data acquisition, asynchronous transfer mode (ATM) and the practical application of these technologies. The international collection of contributors was culled from exhaustive research of over 100,000 related archival and technical journals. This reference will be indispensable to engineering and computer science libraries, research libraries, and telecommunications, networking, and computer companies. It covers a diverse array of topics, including: * Techniques in emerging database system architectures * Techniques and applications in data mining * Object-oriented database systems * Data acquisition on the WWW during heavy client/server traffic periods * Information exploration on the WWW * Education and training in multimedia database systems * Data structure techniques in rapid prototyping and manufacturing * Wireless ATM in data networks for mobile systems * Applications in corporate finance * Scientific data visualization * Data compression and information retrieval * Techniques in medical systems, intensive care units
Author : Lei Chen
Publisher : Morgan & Claypool Publishers
ISBN 13 : 1608458938
Total Pages : 103 pages
Book Rating : 4.6/5 (84 download)
Download or read book Query Processing over Uncertain Databases written by Lei Chen and published by Morgan & Claypool Publishers. This book was released on 2012-12-01 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to measurement errors, transmission lost, or injected noise for privacy protection, uncertainty exists in the data of many real applications. However, query processing techniques for deterministic data cannot be directly applied to uncertain data because they do not have mechanisms to handle data uncertainty. Therefore, efficient and effective manipulation of uncertain data is a practical yet challenging research topic. In this book, we start from the data models for imprecise and uncertain data, move on to defining different semantics for queries on uncertain data, and finally discuss the advanced query processing techniques for various probabilistic queries in uncertain databases. The book serves as a comprehensive guideline for query processing over uncertain databases. Table of Contents: Introduction / Uncertain Data Models / Spatial Query Semantics over Uncertain Data Models / Spatial Query Processing over Uncertain Databases / Conclusion
Author : Ramez A. Elmasri
Publisher : Springer Science & Business Media
ISBN 13 : 9783540582175
Total Pages : 550 pages
Book Rating : 4.5/5 (821 download)
Download or read book Entity-Relationship Approach - ER '93 written by Ramez A. Elmasri and published by Springer Science & Business Media. This book was released on 1994-07-28 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph is devoted to computational morphology, particularly to the construction of a two-dimensional or a three-dimensional closed object boundary through a set of points in arbitrary position. By applying techniques from computational geometry and CAGD, new results are developed in four stages of the construction process: (a) the gamma-neighborhood graph for describing the structure of a set of points; (b) an algorithm for constructing a polygonal or polyhedral boundary (based on (a)); (c) the flintstone scheme as a hierarchy for polygonal and polyhedral approximation and localization; (d) and a Bezier-triangle based scheme for the construction of a smooth piecewise cubic boundary.
Author : Olivier Pivert
Publisher : World Scientific
ISBN 13 : 1908977590
Total Pages : 347 pages
Book Rating : 4.9/5 (89 download)
Download or read book Fuzzy Preference Queries To Relational Databases written by Olivier Pivert and published by World Scientific. This book was released on 2012-02-23 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: The manipulation of databases is an integral part of a world which is becoming increasingly and pervasively information-focused. This book puts forward a suggestion to advocate preference queries and fuzzy sets as a central concern in database queries and offers an important contribution to the design of intelligent information systems. It provides a comprehensive study on fuzzy preference queries in the context of relational databases. Preference queries, a recent hot topic in database research, provide a basis for rank-ordering the items retrieved, which is especially valuable for large sets of answers.This book aims to show that fuzzy set theory constitutes a highly expressive framework for modeling preference queries. It presents a study of the algorithmic aspects related to the evaluation of such queries in order to demonstrate that this framework offers a good trade-off between expressivity and efficiency. Numerous examples and proofs are liberally and lucidly demonstrated throughout, and greatly enhance the detailed theoretical aspects explored in the book.Researchers working in databases will greatly benefit from this comprehensive and up-to-date study of fuzzy preference queries, and it will also become an invaluable reference point for postgraduate students interested in advanced database techniques.The only other books which deal with this topic are edited books or conference proceedings which include a few contributions about some specific aspects of the question. This book provides a comprehensive view of the issue, starting with basic notions related to relational databases and fuzzy set theory, up to the detailed study of complex fuzzy queries and the way they can be efficiently processed. It is the compendium of more than 20 years of research by the authors who benefit from a great international recognition in the domain of intelligent information systems, on the subject.
Author : Anand Desai
Publisher :
ISBN 13 :
Total Pages : 570 pages
Book Rating : 4.3/5 (243 download)
Download or read book Videotex written by Anand Desai and published by . This book was released on 1987 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gloria Bordogna
Publisher : Physica
ISBN 13 : 3790818453
Total Pages : 240 pages
Book Rating : 4.7/5 (98 download)
Download or read book Recent Issues on Fuzzy Databases written by Gloria Bordogna and published by Physica. This book was released on 2013-03-19 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: First of all, I would like to congratulate Gabriella Pasi and Gloria Bordogna for the work they accomplished in preparing this new book in the series "Study in Fuzziness and Soft Computing". "Recent Issues on the Management of Fuzziness in Databases" is undoubtedly a token of their long-lasting and active involvement in the area of Fuzzy Information Retrieval and Fuzzy Database Systems. This book is really welcome in the area of fuzzy databases where they are not numerous although the first works at the crossroads of fuzzy sets and databases were initiated about twenty years ago by L. Zadeh. Only five books have been published since 1995, when the first volume dedicated to fuzzy databases published in the series "Study in Fuzziness and Soft Computing" edited by J. Kacprzyk and myself appeared. Going beyond books strictly speaking, let us also mention the existence of review papers that are part of a couple of handbooks related to fuzzy sets published since 1998. The area known as fuzzy databases covers a bunch of topics among which: -flexible queries addressed to regular databases, -the extension of the notion of a functional dependency, -data mining and fuzzy summarization, -querying databases containing imperfect attribute values represented thanks to possibility distributions.
Author : Troels Andreasen
Publisher : Springer Science & Business Media
ISBN 13 : 1461560756
Total Pages : 294 pages
Book Rating : 4.4/5 (615 download)
Download or read book Flexible Query Answering Systems written by Troels Andreasen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flexible Query Answering Systems is an edited collection of contributed chapters. It focuses on developing computer systems capable of transforming a query into an answer with useful information. The emphasis is on problems associated with high-level intelligent answering systems. The coverage is multidisciplinary with chapters by authors from information science, logic, fuzzy systems, databases, artificial intelligence and knowledge representation. Each contribution represents a theory involving flexibility in query-answering, and each addresses specific answering problems. Coverage includes topics such as fuzzy sets in flexible querying, non-standard database interactions, metareasoning and agents, and many others. Contributions for this volume were written by leading researchers from their respective subject areas, including Patrick Bosc, Bernadette Bouchon-Meunier, Amihai Motro, Henri Prade and Ron Yager, among others. Flexible Query Answering Systems is a timely contribution for researchers working on high-level query mechanism systems.
Author : Jose Galindo
Publisher : IGI Global
ISBN 13 : 1591403243
Total Pages : 341 pages
Book Rating : 4.5/5 (914 download)
Download or read book Fuzzy Databases written by Jose Galindo and published by IGI Global. This book was released on 2006-01-01 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book includes an introduction to fuzzy logic, fuzzy databases and an overview of the state of the art in fuzzy modeling in databases"--Provided by publisher.
Author : Cheryl Gaimon
Publisher :
ISBN 13 :
Total Pages : 292 pages
Book Rating : 4.3/5 (243 download)
Download or read book Sampling of the Future written by Cheryl Gaimon and published by . This book was released on 1986 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
