Creation of visualizations based on linked data

Applying the semantic web to represent an individual’s academic and professional background

“…The graphical representation of the ontology created for modelling the Lattes system can be viewed at the web addresses in 11 . It shows the relationship between classes and properties according to the semantic web standards.…”

“…The dashed line around the predicates and objects vcard:country, rdfs:label and xsd:string highlight the criteria used to establish the linkage between the Lattes and DBPedia Endpoints. Figure 2 shows an interactive visualization interface using the Visualbox tool [11] and the SPARQL query shown in Table 3. It highlights the geographical distribution of countries that received Brazilian individuals to carry out Doctorate graduate degree activities.…”

“…After applying semantic web principles to the Lattes system, we used a Visualbox tool [11] to create visual representations of its data based on SPARQL queries and Linked Data. This tool is an alternative for non-programmers to create and share web visualizations that connect Semantic web's repositories.…”

SWOWS and dynamic queries to build browsing applications on linked data

“…Visualbox [18] and Callimachus [2] have been proposed for linked data visualisation. In their two-step model/view approach, SPARQL queries select data and then a template language generates the (XML-based) visualisation.…”

“…The second update request depends on the association between areas and filters (line 39) to build the variable part of the generated SELECT query as a UNION of elements. Each of these elements consists of a common part (lines [17][18][19][20][21][22] and the query corresponding to the filter (lines [23][24]. This filter query is also enriched in some ways: (1) the filter-common.rq query is added as a subquery (lines 25-27); (2) a LIMIT clause (sp: limit) is added to retrieve exactly the number of items that will be shown in each area (lines 35-38, 40, and 32); (3) the corresponding area is added to the variables projected by each filter query (lines 29-31); and (4) the filter queries are joined together with a constant part that reads the selected artwork from the input of the generated query (lines [8][9][10][11][12]20).…”