I am interested about Social Network Analysis (SNA) with multiple links between pairs of nodes. I'm not aware of works in this area, and I am trying to find any reference in these regards. 


In particular, is there also something about SNA with negative edges, possibly multigraphs?



Multigraphs and Social Network Analysis
The ideas of Formal Concept Analysis may be of use to you. 


There is at least one paper on the general area
"Understanding social networks using Formal Concept Analysis" 
Vaclav Snasel, Zdenek Horak and Ajith Abraham 


<http://www.softcomputing.net/wi08.pdf>


