Query Processing Over Incomplete Databases

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Query Processing over Incomplete Databases

Author : Yunjun Gao
Publisher : Springer Nature
ISBN 13 : 303101863X
Total Pages : 106 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis Query Processing over Incomplete Databases by : Yunjun Gao

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.

Query Processing Over Incomplete Databases

Author : Yunjun Gao
Publisher : Morgan & Claypool
ISBN 13 : 9781681734224
Total Pages : 122 pages
Book Rating : 4.7/5 (342 download)

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Book Synopsis Query Processing Over Incomplete Databases by : Yunjun Gao

Download or read book Query Processing Over Incomplete Databases written by Yunjun Gao and published by Morgan & Claypool. This book was released on 2018-08-20 with total page 122 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.

Query Processing in Database Systems

Author : W. Kim
Publisher : Springer Science & Business Media
ISBN 13 : 3642823750
Total Pages : 367 pages
Book Rating : 4.6/5 (428 download)

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Book Synopsis Query Processing in Database Systems by : W. Kim

Download or read book Query Processing in Database Systems written by W. Kim and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an anthology of the results of research and development in database query processing during the past decade. The relational model of data provided tremendous impetus for research into query processing. Since a relational query does not specify access paths to the stored data, the database management system (DBMS) must provide an intelligent query-processing subsystem which will evaluate a number of potentially efficient strategies for processing the query and select the one that optimizes a given performance measure. The degree of sophistication of this subsystem, often called the optimizer, critically affects the performance of the DBMS. Research into query processing thus started has taken off in several directions during the past decade. The emergence of research into distributed databases has enormously complicated the tasks of the optimizer. In a distributed environment, the database may be partitioned into horizontal or vertical fragments of relations. Replicas of the fragments may be stored in different sites of a network and even migrate to other sites. The measure of performance of a query in a distributed system must include the communication cost between sites. To minimize communication costs for-queries involving multiple relations across multiple sites, optimizers may also have to consider semi-join techniques.

Proceedings of the 2nd International Conference on Big Data, IoT and Machine Learning

Author : Mohammad Shamsul Arefin
Publisher : Springer Nature
ISBN 13 : 981998937X
Total Pages : 1053 pages
Book Rating : 4.8/5 (199 download)

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Book Synopsis Proceedings of the 2nd International Conference on Big Data, IoT and Machine Learning by : Mohammad Shamsul Arefin

Download or read book Proceedings of the 2nd International Conference on Big Data, IoT and Machine Learning written by Mohammad Shamsul Arefin and published by Springer Nature. This book was released on with total page 1053 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Query Processing Over Uncertain Databases

Author : Lei Chen
Publisher : Morgan & Claypool Publishers
ISBN 13 : 9781608458929
Total Pages : 102 pages
Book Rating : 4.4/5 (589 download)

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Book Synopsis Query Processing Over Uncertain Databases by : Lei Chen

Download or read book Query Processing Over Uncertain Databases written by Lei Chen and published by Morgan & Claypool Publishers. This book was released on 2012-10-31 with total page 102 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.

Database Systems for Advanced Applications

Author : Hwanjo Yu
Publisher : Springer
ISBN 13 : 364229023X
Total Pages : 336 pages
Book Rating : 4.6/5 (422 download)

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Book Synopsis Database Systems for Advanced Applications by : Hwanjo Yu

Download or read book Database Systems for Advanced Applications written by Hwanjo Yu and published by Springer. This book was released on 2012-04-05 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the workshop proceedings of the 17th International Conference on Database Systems for Advanced Applications, DASFAA 2012, held in Busan, South Korea, in April 2012. The volume contains five workshops, each focusing on specific area that contributes to the main themes of the DASFAA conference: The Second International Workshop on Flash-based Database Systems (FlashDB 2012), the First International Workshop on Information Technologies for Maritime and Logistics (ITEMS 2012), the Third International Workshop on Social Networks and Social Media Mining on the Web (SNSMW 2012), the Second International Workshop on Spatial Information Modeling, Management and Mining (SIM3 2012), and the Fifth International Workshop on Data Quality in Integration Systems (DQIS 2012).

Scalable Processing of Spatial-Keyword Queries

Author : Ahmed R. Mahmood
Publisher : Springer Nature
ISBN 13 : 3031018672
Total Pages : 98 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis Scalable Processing of Spatial-Keyword Queries by : Ahmed R. Mahmood

Download or read book Scalable Processing of Spatial-Keyword Queries written by Ahmed R. Mahmood and published by Springer Nature. This book was released on 2022-05-31 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Text data that is associated with location data has become ubiquitous. A tweet is an example of this type of data, where the text in a tweet is associated with the location where the tweet has been issued. We use the term spatial-keyword data to refer to this type of data. Spatial-keyword data is being generated at massive scale. Almost all online transactions have an associated spatial trace. The spatial trace is derived from GPS coordinates, IP addresses, or cell-phone-tower locations. Hundreds of millions or even billions of spatial-keyword objects are being generated daily. Spatial-keyword data has numerous applications that require efficient processing and management of massive amounts of spatial-keyword data. This book starts by overviewing some important applications of spatial-keyword data, and demonstrates the scale at which spatial-keyword data is being generated. Then, it formalizes and classifies the various types of queries that execute over spatial-keyword data. Next, it discusses important and desirable properties of spatial-keyword query languages that are needed to express queries over spatial-keyword data. As will be illustrated, existing spatial-keyword query languages vary in the types of spatial-keyword queries that they can support. There are many systems that process spatial-keyword queries. Systems differ from each other in various aspects, e.g., whether the system is batch-oriented or stream-based, and whether the system is centralized or distributed. Moreover, spatial-keyword systems vary in the types of queries that they support. Finally, systems vary in the types of indexing techniques that they adopt. This book provides an overview of the main spatial-keyword data-management systems (SKDMSs), and classifies them according to their features. Moreover, the book describes the main approaches adopted when indexing spatial-keyword data in the centralized and distributed settings. Several case studies of {SKDMSs} are presented along with the applications and query types that these {SKDMSs} are targeted for and the indexing techniques they utilize for processing their queries. Optimizing the performance and the query processing of {SKDMSs} still has many research challenges and open problems. The book concludes with a discussion about several important and open research-problems in the domain of scalable spatial-keyword processing.

Advanced Database Systems For Integration Of Media And User Environments '98: Advanced Database Research

Author : Yahiko Kambayashi
Publisher : World Scientific
ISBN 13 : 9814545031
Total Pages : 366 pages
Book Rating : 4.8/5 (145 download)

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Book Synopsis Advanced Database Systems For Integration Of Media And User Environments '98: Advanced Database Research by : Yahiko Kambayashi

Download or read book Advanced Database Systems For Integration Of Media And User Environments '98: Advanced Database Research written by Yahiko Kambayashi and published by World Scientific. This book was released on 1998-03-31 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is a progress report on the project Research and Development of Advanced Database Systems for Integration of Media and User Environments, supported by the Ministry of Education, Science, Sports and Culture of Japan. It investigates research on new database systems due to the recent development of network technology; a clearer picture of integration by database technology is drawn as a result.

Pattern Analysis, Intelligent Security and the Internet of Things

Author : Ajith Abraham
Publisher : Springer
ISBN 13 : 3319173987
Total Pages : 359 pages
Book Rating : 4.3/5 (191 download)

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Book Synopsis Pattern Analysis, Intelligent Security and the Internet of Things by : Ajith Abraham

Download or read book Pattern Analysis, Intelligent Security and the Internet of Things written by Ajith Abraham and published by Springer. This book was released on 2015-06-20 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Volume presents the selected papers from the 5 Parallel Symposiums of the 2014 Fourth World Congress on Information and Communication Technologies (WICT 2014) held in Malacca, Malaysia. The theme of WICT 2014 'Innovating ICT for Social Revolutions'. WICT 2014 is Co-Organized by Machine Intelligence Research Labs (MIR Labs), USA and Universiti Teknikal Malaysia Melaka, Malaysia. WICT 2014 is technically co-sponsored by IEEE Systems, Man & Cybernetics Society Malaysia and Spain Chapters and Technically Supported by IEEE Systems Man and Cybernetics Society, Technical Committee on Soft Computing.

Transaction Processing on Modern Hardware

Author : Mohammad Sadoghi
Publisher : Springer Nature
ISBN 13 : 3031018702
Total Pages : 122 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis Transaction Processing on Modern Hardware by : Mohammad Sadoghi

Download or read book Transaction Processing on Modern Hardware written by Mohammad Sadoghi and published by Springer Nature. This book was released on 2022-05-31 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: The last decade has brought groundbreaking developments in transaction processing. This resurgence of an otherwise mature research area has spurred from the diminishing cost per GB of DRAM that allows many transaction processing workloads to be entirely memory-resident. This shift demanded a pause to fundamentally rethink the architecture of database systems. The data storage lexicon has now expanded beyond spinning disks and RAID levels to include the cache hierarchy, memory consistency models, cache coherence and write invalidation costs, NUMA regions, and coherence domains. New memory technologies promise fast non-volatile storage and expose unchartered trade-offs for transactional durability, such as exploiting byte-addressable hot and cold storage through persistent programming that promotes simpler recovery protocols. In the meantime, the plateauing single-threaded processor performance has brought massive concurrency within a single node, first in the form of multi-core, and now with many-core and heterogeneous processors. The exciting possibility to reshape the storage, transaction, logging, and recovery layers of next-generation systems on emerging hardware have prompted the database research community to vigorously debate the trade-offs between specialized kernels that narrowly focus on transaction processing performance vs. designs that permit transactionally consistent data accesses from decision support and analytical workloads. In this book, we aim to classify and distill the new body of work on transaction processing that has surfaced in the last decade to navigate researchers and practitioners through this intricate research subject.

Query Processing over Uncertain Databases

Author : Lei Chen
Publisher : Springer Nature
ISBN 13 : 3031018966
Total Pages : 91 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis Query Processing over Uncertain Databases by : Lei Chen

Download or read book Query Processing over Uncertain Databases written by Lei Chen and published by Springer Nature. This book was released on 2022-05-31 with total page 91 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

Digital Media Information Base: Proceedings Of The International Symposium

Author : Masatoshi Yoshikawa
Publisher : World Scientific
ISBN 13 : 9814545023
Total Pages : 338 pages
Book Rating : 4.8/5 (145 download)

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Book Synopsis Digital Media Information Base: Proceedings Of The International Symposium by : Masatoshi Yoshikawa

Download or read book Digital Media Information Base: Proceedings Of The International Symposium written by Masatoshi Yoshikawa and published by World Scientific. This book was released on 1998-03-12 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the rapid growth of computer and communication technologies, the creation, modification and distribution of digital multimedia information have become easier than ever. Such multimedia information includes still images, video, audio, texts and artifacts in virtual space. The efficient storage of valuable information and rapid access to it is crucial to all modern organizations.This proceedings volume consists of papers by researchers and academicians which explore the various aspects of the digital media information base. A special emphasis is placed on new database system technologies.

Database Systems for Advanced Applications

Author : Jianliang Xu
Publisher : Springer
ISBN 13 : 3642202446
Total Pages : 550 pages
Book Rating : 4.6/5 (422 download)

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Book Synopsis Database Systems for Advanced Applications by : Jianliang Xu

Download or read book Database Systems for Advanced Applications written by Jianliang Xu and published by Springer. This book was released on 2011-04-12 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the workshop proceedings of the 16th International Conference on Database Systems for Advanced Applications, DASFAA 2011, held in Hong Kong, China, in April 2011. The volume contains six workshops, each focusing on specific research issues that contribute to the main themes of the DASFAA conference: The First International Workshop on Graph-structured Data Bases (GDB 2011); the First International Workshop on Spatial Information Modeling, Management and Mining (SIM3 2011); the International Workshop on Flash-based Database Systems (FlashDB 2011); the Second International Workshop on Social Networks and Social Media Mining on the Web (SNSMW 2011); the First International Workshop on Data Management for Emerging Network Infrastructures (DaMEN 2011); and the Fourth International Workshop on Data Quality in Integration Systems (DQIS 2011).

Ranking Queries on Uncertain Data

Author : Ming Hua
Publisher : Springer Science & Business Media
ISBN 13 : 1441993800
Total Pages : 233 pages
Book Rating : 4.4/5 (419 download)

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Book Synopsis Ranking Queries on Uncertain Data by : Ming Hua

Download or read book Ranking Queries on Uncertain Data written by Ming Hua and published by Springer Science & Business Media. This book was released on 2011-03-28 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: Uncertain data is inherent in many important applications, such as environmental surveillance, market analysis, and quantitative economics research. Due to the importance of those applications and rapidly increasing amounts of uncertain data collected and accumulated, analyzing large collections of uncertain data has become an important task. Ranking queries (also known as top-k queries) are often natural and useful in analyzing uncertain data. Ranking Queries on Uncertain Data discusses the motivations/applications, challenging problems, the fundamental principles, and the evaluation algorithms of ranking queries on uncertain data. Theoretical and algorithmic results of ranking queries on uncertain data are presented in the last section of this book. Ranking Queries on Uncertain Data is the first book to systematically discuss the problem of ranking queries on uncertain data.

Skylines and Other Dominance-Based Queries

Author : Apostolos N. Papadopoulos
Publisher : Springer Nature
ISBN 13 : 3031018761
Total Pages : 134 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis Skylines and Other Dominance-Based Queries by : Apostolos N. Papadopoulos

Download or read book Skylines and Other Dominance-Based Queries written by Apostolos N. Papadopoulos and published by Springer Nature. This book was released on 2022-06-01 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a gentle introduction to dominance-based query processing techniques and their applications. The book aims to present fundamental as well as some advanced issues in the area in a precise, but easy-to-follow, manner. Dominance is an intuitive concept that can be used in many different ways in diverse application domains. The concept of dominance is based on the values of the attributes of each object. An object dominates another object if is better than . This goodness criterion may differ from one user to another. However, all decisions boil down to the minimization or maximization of attribute values. In this book, we will explore algorithms and applications related to dominance-based query processing. The concept of dominance has a long history in finance and multi-criteria optimization. However, the introduction of the concept to the database community in 2001 inspired many researchers to contribute to the area. Therefore, many algorithmic techniques have been proposed for the efficient processing of dominance-based queries, such as skyline queries, -dominant queries, and top- dominating queries, just to name a few.

Database Systems for Advanced Applications

Author : Weiyi Meng
Publisher : Springer
ISBN 13 : 3642374875
Total Pages : 509 pages
Book Rating : 4.6/5 (423 download)

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Book Synopsis Database Systems for Advanced Applications by : Weiyi Meng

Download or read book Database Systems for Advanced Applications written by Weiyi Meng and published by Springer. This book was released on 2013-04-17 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt: This two volume set LNCS 7825 and LNCS 7826 constitutes the refereed proceedings of the 18th International Conference on Database Systems for Advanced Applications, DASFAA 2013, held in Wuhan, China, in April 2013. The 51 revised full papers and 10 short papers presented together with 2 invited keynote talks, 1 invited paper, 3 industrial papers, 9 demo presentations, 4 tutorials and 1 panel paper were carefully reviewed and selected from a total of 227 submissions. The topics covered in part 1 are social networks; query processing; nearest neighbor search; index; query analysis; XML data management; privacy protection; and uncertain data management; and in part 2: graph data management; physical design; knowledge management; temporal data management; social networks; query processing; data mining; applications; and database applications.

Community Search over Big Graphs

Author : Xin Huang
Publisher : Springer Nature
ISBN 13 : 3031018745
Total Pages : 188 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis Community Search over Big Graphs by : Xin Huang

Download or read book Community Search over Big Graphs written by Xin Huang and published by Springer Nature. This book was released on 2022-05-31 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Communities serve as basic structural building blocks for understanding the organization of many real-world networks, including social, biological, collaboration, and communication networks. Recently, community search over graphs has attracted significantly increasing attention, from small, simple, and static graphs to big, evolving, attributed, and location-based graphs. In this book, we first review the basic concepts of networks, communities, and various kinds of dense subgraph models. We then survey the state of the art in community search techniques on various kinds of networks across different application areas. Specifically, we discuss cohesive community search, attributed community search, social circle discovery, and geo-social group search. We highlight the challenges posed by different community search problems. We present their motivations, principles, methodologies, algorithms, and applications, and provide a comprehensive comparison of the existing techniques. This book finally concludes by listing publicly available real-world datasets and useful tools for facilitating further research, and by offering further readings and future directions of research in this important and growing area.