Consilience
The term refers to "the jumping together" of knowledge. E. O. Wilson's account of how group or collective knowledge forms across disciplines is too narrowly conceived (based on induction). Nonetheless, he had the right idea. Here are some resources and sites of inquiry related to the integration of knowledge.
University of Washington, Collective Knowledge Bases
Scott
Rettberg
"Collective Knowledge, Collective Narratives, and
Architectures of Participation," essay.
Social Web meets Semantic Web Tom Gruber
Avanoo blog post on a tool to mine collective knowledge
Gan & Zhu Learning Framework for...Collective Wisdom (pdf).