Complex Path Queries for RDF Graphs

In order to illustrate our language of abstract queries, and show its expressive power, we show below the table query T for the complex use case (C) of Section 2. ) T 0 is the

Data triples are read one by one, their subject and object are represented with source and target data nodes, possibly unifying the source and target nodes based on the

Below we outline a path we started from devising an RDF counterpart to relational (data warehouse) relational queries, formalizing RDF analytical (aggregate) queries (Section 3.1),

The model of [31] first introduced the idea of defining the nodes and edges of the analytical schema (“graph cube” in their terminology) through independent queries (the

The matrix A(G) considered above has an interesting property, when G is any circle graph; it can be transformed into an antisymmetric matrix with integral coefficients, by changing

Below we outline a path we started from devising an RDF counterpart to relational (data warehouse) relational queries, formalizing RDF analytical (aggregate) queries (Section 3.1),

In this paper, we describe the general structure of a system for the extraction of data through keyword search from an RDF database and the automatic creation of a

Figure 1 provides a screenshot of the interface for querying Wikidata, where we can see three components: a search panel (left pane), a visual query editor (center pane), a node