Many solutions have been defined for multidimensional database modelling. These propositions consider the same aggregation function to determine the values of an indicator according to different levels of granu
Modelling Node Heterogeneity in Latent Space Models for Multidimensional Networks: Modelling Heterogeneity in Multiplex Datalatent space modelsMarkov Chain Monte CarlomultiplexMultidimensional network data can have different levels of complexity, as nodes may be characterized by heterogeneous individual﹕pecific ...
We first compare approaches for multidimensional data modelling in XML, then describe how typical OLAP queries on these models can be expressed in XQuery. We then show how, regardless of the model, the grouping features of XQuery 1.1 improve performance and readability of these queries. Finally, ...
Multidimensional data model Fuzzy linguistic modelling Linguistic multidimensional data model Opinion aggregation摘要 With the rapid development of Web 2.0 sites such as Blogs and Wikis users are encouraged to express opinions about certain products, services or social topics over the web. There is a ...
definition of the semantics of the GMD data model and of the basic al- gebraic operations over it, we show how the most important approaches in DW modelling can be captured by it. The star and the snowflake schemas, Gray’s cube, Agrawal’s and Vassiliadis’ models, MD and other...
(Extended Data Table2and Supplementary TableC5), particularly for marine SSF. For the inland sub-sector, we acknowledge that our estimates are more conservative than those of previous modelling approaches based mostly on non-fishery data57,58and should be interpreted as the visible, lower end of...
In this trend, MDA could be considered the most convenient approach to integrate the modelling process in data warehousing projects. On the other hand, decision-makers are usually unable to express their business needs in a concise way that allows getting a valid data warehouse (DW), mainly ...
formalisms for data representation in this context is the relational model, which is clearly well suited in the case of a ROLAP implementation. In general however, using a logical data model has a number of negative consequences. First, a logical representation is conceived to describe, at ...
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4) Multi-dimensional Vector Point Modelling 多维向量点建模5) multidimensional data modeling 多维数据建模 1. Because the OLAP is multidimensional, the multidimensional data modeling techniques attract human s general attentions and wide interests. 由于OLAP具有多维特征,因此多维数据建模技术引起了人们的...