Computing shortest paths between two given nodes is a fundamental operation over graphs, but known to be nontrivial over large disk-resident instances of graph data. While a numbe...
Andrey Gubichev, Srikanta J. Bedathur, Stephan Seu...
This study of the flow of online discussions examined how earlier messages affected later messages along five dimensions: (1) evaluations (agree, disagree, or unresponsive actions...
"Open contribution systems" (OCS) are online applications that encourage users to contribute and share content in a "public" and open manner. While these syste...
Research suggests that collaboration in an on-line course can enhance learning, reduce feelings of isolation, increase satisfaction with the course, and increase motivation. Unfor...
Sandra C. Hughes, Leah Wickersham, David L. Ryan-J...
A challenge for many online production communities is to direct their members to accomplish tasks that are important to the group, even when these tasks may not match individual m...