QB4OLAP tools

[QB4OLAP] (http://lorenae.github.io/qb4olap/) is a RDFS Vocabulary for Business Intelligence over Linked Data.

In this project we include a set of prototypes that conform a showcase of what can be done using this vocabulary, focusing on exploring and querying.

For querying we propose a high level OLAP language, called QL, which consists on a set of well-known operators: rollup, drilldown, slice, and dice. Using the cube metadata, also written using QB4OLAP, we automatically generate SPARQL queries to implement sequences of QL operations.

INSTALLATION

1. download [zip] (https://github.com/lorenae/qb4olap-tools/archive/master.zip) file and extract it

2. install [nodejs] (https://nodejs.org/en/)

3. open console, go to qb4olap-tools directory (obtained in step 1)

4. install npm packages needed by the application (npm install command, which install the packages liste in packages.json)

5. run the application (node qb4olap.js)!!