Approximate Aggregate Query Processing Olap

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Top-k Queries in Uncertain OLAP - University Of …

2009-12-09· Top-k Queries in Uncertain OLAP Master Scholarly Paper ... data warehouse, OLAP, top-k, query processing. 1 Introduction ... A straightforward method to evaluate a top-k OLAP query is to compute the aggregate value

Approximate Query Processing Using Wavelets

2004-04-19· – Aggregate query : Precision to penny?NO – Fast, approximate answer is preferable n Approximate Query Processing ... • limited in query processing scope (only range-sum queries) 6

Implementing OLAP Query Fragment Aggregation and Recombination for the OLAP …

2007-02-14· Aggregate queries in OLAP are categorized by the di-mensions they choose to group by, and the aggregated table resulting from such queries are called views. For example, ... offers for query processing in the OLAP Enabled Grid. We

Evaluation of Top-k OLAP Queries Using Aggregate R

2005-08-03· ward method to evaluate a top-k OLAP query is to compute the aggregate value for each group and then select the groups with the highest aggregates. In this ... The aR–tree can also be used for approximate query processing, ...

APPROX_FOR_AGGREGATION - Oracle Help …

2016-11-09· APPROX_FOR_AGGREGATION replaces exact query processing for aggregation queries with approximate query processing.

aggregate query processing in peer to peer …

aggregate query processing in peer to peer ... aggregate query processing in peer-to-peer networks with synopsis Aggregate Queries in Peer-to-Peer OLAP Aggregate Queries in ... approximate query processing in peer to ...

Compressed data cube for approximate OLAP query processing

2017-08-28· Compressed Data Cube for Approximate OLAP Query Processing ... Abstract Approximate query processing has emerged as an approach to dealing with the ... No.5 Compressed Data Cube for Approximate OLAP Query Processing 627

Data Warehousing and OLAP Bibliography - …

2010-10-14· ... Proceedings of the 7th ACM international workshop on Data warehousing and OLAP, 65—72, 2004. ... D. Barbara, Quasi-cubes: a space-efficient way to support approximate ... Aggregate query processing in data warehousing ...

Providing probabilistically-bounded …

Abstract A novel framework for providing probabilistically-bounded approximate answers ... Providing Probabilistically-Bounded Approximate Answers to Non ... Fundamentals of Digital Image Processing, Query Answering in OLAP ...

Specifying where aggregate rollups are processed

2018-06-22· The default is set to local if local query processing is enabled, ... Specifying where aggregate rollups are processed. ... this is translated into the appropriate OLAP aggregate functions. Procedure.

Evaluation of Top-k OLAP Queries Using Aggregate R

2005-08-25· ward method to evaluate a top-k OLAP query is to compute the aggregate value ... Evaluation of Top-k OLAP Queries Using Aggregate R–Trees 239 ... The aR–tree can also be used for approximatequery processing, ...

Compressed Data Cubes for OLAP Aggregate …

1999-06-01· Microsoft Research. MSR AI; Asia Lab (Chinese) Asia Lab ... Compressed Data Cubes for OLAP Aggregate Query Approximation on Continuous Dimensions June 1, 1999 ... The tradeoff is approximate, ...

Spatial Hierarchy and OLAP-Favored Search in Spatial …

2005-04-11· Spatial Hierarchy and OLAP-Favored Search in Spatial Data Warehouse ... computes aggregate measure in cubiods. While taking spatial data into consideration, ... but also plays a key role in spatial-related OLAP query processing.

Answering Approximate Range Aggregate …

2018-05-12· Approximate range aggregate queries are one of the most ... such as error guarantees and query processing ... we present a technique that provide approximate answers to range aggregate queries on OLAP data cubes ...

Online analytical processing - Wikipedia

2018-06-21· Multidimensional structure is quite popular for analytical databases that use online analytical processing (OLAP) ... aggregate tables is skipped, the query performance ... introduced the MDX query language. Several OLAP ...

aggregate query processing in data warehousing

Aggregate-Query Processing in Data Warehousing Environments ... Processing (OLAP), and Data Warehouse [2, 4]. ... Connecting Approximate Query Processing ...

Online analytical processing (OLAP) | Microsoft …

2017-11-28· Online analytical processing (OLAP) 11/28/2017; 8 minutes to read ... Users would need to know which tables to query, ... OLAP is especially useful for applying aggregate calculations over large amounts of data.

Approximate Query Processing Using Wavelets

2004-04-19· – Aggregate query : Precision to penny?NO – Fast, approximate answer is preferable n Approximate Query Processing ... • limited in query processing scope (only range-sum queries) 6

Approximate Query Processing: Taming the Terabytes

2006-07-29· Garofalakis & Gibbons, VLDB 2001 # 1 Approximate Query Processing: Taming the TeraBytes! A Tutorial Minos Garofalakis and Phillip B. Gibbons Information Sciences Research Center Bell Laboratories bell-labs/user ...

Top-k Queries in Uncertain OLAP - University Of …

2009-12-09· Top-k Queries in Uncertain OLAP Master Scholarly Paper ... data warehouse, OLAP, top-k, query processing. 1 Introduction ... A straightforward method to evaluate a top-k OLAP query is to compute the aggregate value

Approximate Aggregate Query Processing: Olap - …

2005-11-18· 1 1 Approximate Aggregate Query Processing: Olap Stefania Marrara Politecnico di Milano [email protected] 2 Outline • Intro & Approximate Query Answering Overview – Synopses • One-Dimensional Synopses – Histograms ...

Answering Approximate Range Aggregate Queries on OLAP …

2011-01-09· Answering Approximate Range Aggregate Queries on OLAP Data Cubes with Probabilistic Guarantees ... Fig. 1 shows an overview of our solution to approximate range aggregate query processing.

Compressed Data Cubes for OLAP Aggregate Query Approximation on Continuous Dimensions

2017-07-26· Compressed Cubes for OLAP Query Approximation Shanmugasundaram, Fayyad and Bradley 0 Compressed Data Cubes for OLAP Aggregate Query Approximation on Continuous Dimensions Jayavel ...

Approximate Query Processing Using Wavelets …

2016-02-19· Analysis of the existing techniques for approximate query processing of Big Data, based on sampling, histograms and wavelets, demonstrates that wavelet-bas

LNCS 3181 - Answering Approximate Range Aggregate Queries on OLAP …

2017-08-27· efficient approximate query processing. ... Answering Approximate Range Aggregate Queries on OLAP Data Cubes 99 ... Answering Approximate Range Aggregate Queries on OLAP Data Cubes 101

Answering Approximate Range Aggregate …

2018-05-21· Answering Approximate Range Aggregate Queries on OLAP Data ... Approximate aggregate query processing is able to provide fast answers to ... method for supporting approximate aggregate query answering in OLAP ...

also aggregate data for query processing and …

Answering Approximate Range Aggregate Queries . Queries on OLAP Data Cubes with Probabilistic Guarantees to approximate range aggregate query processing. that when the size of data cubes is . Published in: data warehousing and ...

definition of aggregate query processing - Mine …

Aggregate-Query Processing in Data Warehousing Environments view definition. Figure ... The aggregate functions defined in SQL/OLAP are STDDEV_POP, ... Approximate Query Processing - SpringerReference Definition.

Providing Probabilistically-Bounded Approximate Answers to Non-Holistic Aggregate ...

Providing Probabilistically-Bounded Approximate ... A novel framework for providing probabilistically-bounded approximate answers to non-holistic aggregate range queries in ... Approximate Query Answering, OLAP, ...

A Robust, Optimization-Based Approach for Approximate Answering of Aggregate Queries

2018-01-04· A Robust, Optimization-Based Approach for Approximate Answering of Aggregate Queries Surajit Chaudhuri Gautam Das Vivek Narasayya Microsoft Research Microsoft Research Microsoft Research One Microsoft Way, One Microsoft Way ...