faq
Get flash to fully experience Pearltrees
Since the Musicbrainz relational database has been converted into RDF using the Music Ontology , all relations existing between Musicbrainz entities (an entity can be a Music Artist, a Band, an Album, a Track, etc.) are creating a musical relations graph. Each node of the graph is a resource and each arc is a property between two resources. Welcome in the World of RDF. This means that from a resource “Madonna” we can browse the musical relations graph to find other entities such as Records, People, Bands, Etc.
Browsing Musicbrainz’s dataset via URI dereferencing at Frederick Giasson’s Weblog
The term “rules” in the context of the Semantic Web refers to elements of logic programming and rule based systems bound to Semantic Web data. Rules offer a way to express, for example, constraints on the relationships defined by by RDF, or may be used to discover new, implicit relationships. Various rule systems (production rules, Prolog-like systems, etc) are very different from one another, and it is not possible to define one rule language to encompass them all.
C Semantic Web FAQ
Planet RDF
The official Lego Minecraft set looks really good and does a great job at capturing the feel of a Minecraft environment. However having looked at various pictures of the set , I realised that apart from the couple of custom pieces with faces printed on them, we had the majority of the pieces for the set already. So we just went ahead and made some scenes ourselves . Combined with its apparently small size, this doesn’t give us a great deal of incentive to pay the rather steep asking price (£29.99 in the UK) for the sets. I’d prefer to just buy any additional pieces we need from Bricklink. For example to get the look right, you need a lot of 1×1 tiles.