Figure 2

GoWeb workflow. General workflow for GoWeb showing the main components and the interactions between the external services. The workflow starts with the user submitting a query via the search input field from the GoWeb page (1). The search request is parsed and transformed in a search for the external Yahoo! BOSS (2). The service return a list of results, snippets. The textual content is annotated by GoWeb (3) and the additional external OpenCalais service (4). The search keywords and the identified entities form the annotation are highlighted in the search results. Then the results are rendered and sent to the browser (5). Based on the annotations and the ontology structure the tree representation is induced; top concepts are selected and sent to the browser (6).