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Synopsis
Preparing a data set for analysis is generally the most time-consuming task in a data mining project, requiring many complex SQL queries, joining tables, and aggregating columns. In general, a significant manual effort is required to build data sets, where a horizontal layout is required. Here introduces simple, yet powerful, methods to generate SQL code to return aggregated columns in a horizontal tabular layout, returning a set of numbers instead of one number per row. This new class of functions is called horizontal aggregations. An aggregation function with a grouping technique gives query optimizers an opportunity of providing different query evaluation plans. For queries with a non-distributive aggregation function, evaluation cannot be performed until the entire input is constructed. This delays the entire computation. Aggregation functions of this type are called holistic aggregation functions. To improve the evaluation performance of holistic aggregation function, an approach called partial aggregation can be used. Partial aggregation performs computations in an incremental way and increases the speed of computation.
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Evaluating Horizontal Aggregation with Partial Aggregation
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LAP LAMBERT Academic Publishing Sep 2021, 2021
ISBN 10 : 6204205773
ISBN 13 : 9786204205779
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Vendeur : BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, Allemagne
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Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Preparing a data set for analysis is generally the most time-consuming task in a data mining project, requiring many complex SQL queries, joining tables, and aggregating columns. In general, a significant manual effort is required to build data sets, where a horizontal layout is required. Here introduces simple, yet powerful, methods to generate SQL code to return aggregated columns in a horizontal tabular layout, returning a set of numbers instead of one number per row. This new class of functions is called horizontal aggregations. An aggregation function with a grouping technique gives query optimizers an opportunity of providing different query evaluation plans. For queries with a non-distributive aggregation function, evaluation cannot be performed until the entire input is constructed. This delays the entire computation. Aggregation functions of this type are called holistic aggregation functions. To improve the evaluation performance of holistic aggregation function, an approach called partial aggregation can be used. Partial aggregation performs computations in an incremental way and increases the speed of computation. 76 pp. Englisch. N° de réf. du vendeur 9786204205779
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Evaluating Horizontal Aggregation with Partial Aggregation
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LAP LAMBERT Academic Publishing, 2021
ISBN 10 : 6204205773
ISBN 13 : 9786204205779
Neuf
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Kartoniert / Broschiert. Etat : New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: J A M RexieRexie J A M has completed B.E. and M.E. in CSE and is pursuing Ph.D. in CSE. She is working as an Assistant Professor in the Department of CSE at Karunya Institute of Technology and Sciences, Coimbatore. Her area of intere. N° de réf. du vendeur 519480268
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Evaluating Horizontal Aggregation with Partial Aggregation
Edité par
LAP LAMBERT Academic Publishing Sep 2021, 2021
ISBN 10 : 6204205773
ISBN 13 : 9786204205779
Neuf
Taschenbuch
Vendeur : buchversandmimpf2000, Emtmannsberg, BAYE, Allemagne
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Taschenbuch. Etat : Neu. This item is printed on demand - Print on Demand Titel. Neuware -Preparing a data set for analysis is generally the most time-consuming task in a data mining project, requiring many complex SQL queries, joining tables, and aggregating columns. In general, a significant manual effort is required to build data sets, where a horizontal layout is required. Here introduces simple, yet powerful, methods to generate SQL code to return aggregated columns in a horizontal tabular layout, returning a set of numbers instead of one number per row. This new class of functions is called horizontal aggregations. An aggregation function with a grouping technique gives query optimizers an opportunity of providing different query evaluation plans. For queries with a non-distributive aggregation function, evaluation cannot be performed until the entire input is constructed. This delays the entire computation. Aggregation functions of this type are called holistic aggregation functions. To improve the evaluation performance of holistic aggregation function, an approach called partial aggregation can be used. Partial aggregation performs computations in an incremental way and increases the speed of computation.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 76 pp. Englisch. N° de réf. du vendeur 9786204205779
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Evaluating Horizontal Aggregation with Partial Aggregation
Edité par
LAP LAMBERT Academic Publishing, 2021
ISBN 10 : 6204205773
ISBN 13 : 9786204205779
Neuf
Taschenbuch
Vendeur : AHA-BUCH GmbH, Einbeck, Allemagne
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Taschenbuch. Etat : Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Preparing a data set for analysis is generally the most time-consuming task in a data mining project, requiring many complex SQL queries, joining tables, and aggregating columns. In general, a significant manual effort is required to build data sets, where a horizontal layout is required. Here introduces simple, yet powerful, methods to generate SQL code to return aggregated columns in a horizontal tabular layout, returning a set of numbers instead of one number per row. This new class of functions is called horizontal aggregations. An aggregation function with a grouping technique gives query optimizers an opportunity of providing different query evaluation plans. For queries with a non-distributive aggregation function, evaluation cannot be performed until the entire input is constructed. This delays the entire computation. Aggregation functions of this type are called holistic aggregation functions. To improve the evaluation performance of holistic aggregation function, an approach called partial aggregation can be used. Partial aggregation performs computations in an incremental way and increases the speed of computation. N° de réf. du vendeur 9786204205779
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Evaluating Horizontal Aggregation with Partial Aggregation
Edité par
LAP LAMBERT Academic Publishing, 2021
ISBN 10 : 6204205773
ISBN 13 : 9786204205779
Neuf
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Taschenbuch. Etat : Neu. Evaluating Horizontal Aggregation with Partial Aggregation | Rexie J A M | Taschenbuch | Englisch | 2021 | LAP LAMBERT Academic Publishing | EAN 9786204205779 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu. N° de réf. du vendeur 120712751
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