I have pushed a new social network graph visualization feature into xEAC, a highly Linked Open Data integrated software platform for the the creation and publication of EAC-CPF records.

The more interesting examples are http://numismatics.org/authority/new_york_numismatic_club and http://numismatics.org/authority/newell. Just click nodes to expand the graph. The Newell record, in particular, uses SPARQL in other ways: to list related resources in our archives and list sections in which Newell is mentioned in an EBook (TEI file) we just published to the American Numismatic Society Digital Library.

The new graph visualizations are based on modeling EAC-CPF into various standard RDF ontologies and publishing the triples into a SPARQL endpoint. While there is much work remaining to model events represented in EAC-CPF into RDF, the relationship model between persons, corporate bodies, and families is stable enough to power the graphical visualizations in the open source Javascript library, vis.js.

This represents the first phase of a more comprehensive social network analysis functionality. The graphs are available for manipulation on the level of individual entities, but my goal is to expand the application to implement a more sophisticated query interface that allows users to select arbitrary parameters to generate their own visualizations. For example, a user may want to view all persons grouped together by family or corporate body. Or group people by occupation, and filter by date or place. All of these things are possible by reconceptualizing EAC-CPF into RDF graphs.

For more technical information about this feature: http://eaditor.blogspot.com/2016/01/sparql-based-social-network-graph-in.html

For installation and use of xEAC: https://github.com/ewg118/xEAC