http://franz.com/ns/allegrograph/4.11/sna/neighborCache
Create a cache of the neighbors of a node.
For example,
  ?cache sna:neighborCache ( ex:namedGenerator ?startnode ?depth ) .    will create a neighbor matrix for the neighbors of  ?startnode  out to a depth of  ?depth  using the generator  ex:namedGenerator . This assumes that this generator exists and that both  ?startnode  and  ?depth  are bound by other patterns in the query. 
 The bindings to  ?cache  act like blank nodes in that they have no meaning outside of the current query execution. During the execution, however, they can be used in place to generators in order to speed up other SNA computations. 
Notes
The following namespace abbreviations are used:
- fti - <http://franz.com/ns/allegrograph/2.2/textindex/>
 - geo - <http://franz.com/ns/allegrograph/3.0/geospatial/>
 - geofn - <http://franz.com/ns/allegrograph/3.0/geospatial/fn/>
 - nd - <http://franz.com/ns/allegrograph/5.0/geo/nd#>
 - ndfn - <http://franz.com/ns/allegrograph/5.0/geo/nd/fn#>
 - sna - <http://franz.com/ns/allegrograph/4.11/sna/>
 
The SPARQL magic properties reference has additional information on using AllegroGraph magic properties and functions.