Notes in Philospace

Notes are user entered comments and information, which refers to Sources (online documents), or instances of classes in an Ontology (e.g. instances of PErson, Concept, etc.).

Notes are added by the user usign a UI Wizard while he/she is browsing the web with the Philospace internal browser. They can add notes to entire pages or to fragments of pages (e.g. sentences, pictures).

A Note is made by the following data: Author: the URI of the user who created the Note Date: the creation date (expressed as a simple string at the moment) Comment: a free text comment entered by the users Structured payload: a set of semantically structured assertions, made by the user at creation time, expressed as triples (subject, object, predicate).

A Note is serialized, stored and exchanged in Philospace in the form of an RDF graph. The RDF structure of a Note is depicted in the attached image. We are using RDF reification to identify the single RDF triples composing the structured payload and then we connect such reified nodes to the node representing the Note itself by means of hasStatement relations.