A partial-sum query obtains the summation over a set of specified cells of a data cube. We establish a connection between the covering problem in the theory of error-correcting codes and the partial-sum problem and use this connection to devise algorithms for the partial-sum problem with efficient space-time trade-offs. For example, using our algorithms, with 44 percent additional storage, the query response time can be improved by about 12 percent; by roughly doubling the storage requirement, the query response time can be improved by about 34 percent
This article describes how the ever-growing amount of data entails introducing innovative solutions ...
AbstractWe study the problem of pre-computing auxillary information to support on-line range queries...
The precomputation of the di#erent summary views of a data cube is critical to improving the respons...
A partial-sum query obtains the summation over a set of specified cells of a data cube. We establish...
A partial-sum query obtains the summation over a set of specified cells of a data cube. We establish...
A range query applies an aggregation operation (e.g., SUM) over all selected cells of an OLAP data c...
In decision-support systems, ranking-aware queries have been gaining much attention recently. In thi...
A range query applies an aggregation operation over all selected cells of an OLAP data cube where th...
As computers are developing rapidly and become more available to the modern information society, the...
在决策支持系统中,排序查询是研究的热点问题.提出了一种在OLAP(数据仓库)数据立方体中对部分和查询结果进行排序的高效算法,该算法综合利用覆盖码和预排序,有效地解决了对部分和结果的top-k查询问题....
Data warehouses contain data consolidated from several operational databases and provide the histori...
Inefficient query answering is the main drawback in Decision Support Systems (DSS), due to the very ...
On-line analytical processing (OLAP) requires efficient processing of complex decision support queri...
Data mining and related applications often rely on extensive range sum queries and thus, it is impor...
The design of an OLAP system for supporting real-time queries is one of the major research issues. O...
This article describes how the ever-growing amount of data entails introducing innovative solutions ...
AbstractWe study the problem of pre-computing auxillary information to support on-line range queries...
The precomputation of the di#erent summary views of a data cube is critical to improving the respons...
A partial-sum query obtains the summation over a set of specified cells of a data cube. We establish...
A partial-sum query obtains the summation over a set of specified cells of a data cube. We establish...
A range query applies an aggregation operation (e.g., SUM) over all selected cells of an OLAP data c...
In decision-support systems, ranking-aware queries have been gaining much attention recently. In thi...
A range query applies an aggregation operation over all selected cells of an OLAP data cube where th...
As computers are developing rapidly and become more available to the modern information society, the...
在决策支持系统中,排序查询是研究的热点问题.提出了一种在OLAP(数据仓库)数据立方体中对部分和查询结果进行排序的高效算法,该算法综合利用覆盖码和预排序,有效地解决了对部分和结果的top-k查询问题....
Data warehouses contain data consolidated from several operational databases and provide the histori...
Inefficient query answering is the main drawback in Decision Support Systems (DSS), due to the very ...
On-line analytical processing (OLAP) requires efficient processing of complex decision support queri...
Data mining and related applications often rely on extensive range sum queries and thus, it is impor...
The design of an OLAP system for supporting real-time queries is one of the major research issues. O...
This article describes how the ever-growing amount of data entails introducing innovative solutions ...
AbstractWe study the problem of pre-computing auxillary information to support on-line range queries...
The precomputation of the di#erent summary views of a data cube is critical to improving the respons...