  Interaction networks are generally much less homophilic than affiliation
networks, accommodating for many more cross-cutting links. By statistically
assigning a political valence to users from their network-level affiliation
patterns, and by further contrasting interaction and affiliation (quotes and
retweets) within specific discursive events, namely quote trees, we describe a
variety of cross-cutting patterns which significantly nuance the traditional
"echo chamber" narrative.

Social and Information Networks;Computers and Society;Adaptation and Self-Organizing Systems