14. A method comprising: accessing a specification identifying a model of a navigable semantic network, the model defining resource nodes and relationships amongst the resource nodes in the navigable semantic network; in accordance with the model, instantiating a portion of the navigable semantic network from a perspective of a given resource node in the navigable semantic network; and providing access to the instantiated portion of the navigable semantic network to enable rendering of the portion of the navigable semantic network on a display screen.
20. The method as in claim 14 further comprising: in response to receiving selection of a particular node other than the given resource node in the instantiated portion of the navigable semantic network, updating the instantiated portion of the navigable semantic network to include the particular node as a new focal node instead of the given resource node being the focal node.