[2] GSS (Graph Style Sheets) are proposed in order to visually transform the graphs: filtering information, providing alternative layouts for specific elements, and using all available visual variables to encode information, so as to visualise data in a way that better lends itself to human perception.
[1] GSS not only associate styles to node-edge representation of RDF models, but also can be used to hide part of the graph and offer alternative layouts for some intended elements.
a relatively complex RDF model easier to understand by declaring simple styling and visibility instructions to be applied to selected resources and properties.
Its transformation model is loosely based on that of XSLT and its instructions resemble some existing W3C Recommendations such as CSS and SVG.
[2] IsaViz 2.0 is equipped with a GSS Editor, which lets you create stylesheets without writing a single line of RDF.