873 search results - page 150 / 175 » Social Learning |
CHI
2005
ACM
14 years 10 months ago
2005
ACM
Visualization techniques have proven to be critical in helping crime analysis. By interviewing and observing Criminal Intelligence Officers (CIO) and civilian crime analysts at th...
WWW
2010
ACM
14 years 4 months ago
2010
ACM
We propose a novel method, based on concepts from expander graphs, to sample communities in networks. We show that our sampling method, unlike previous techniques, produces subgra...
SAC
2010
ACM
14 years 4 months ago
2010
ACM
CAPTCHAs protect online resources and services from automated access. From an attacker’s point of view, they are typically perceived as an annoyance that prevents the mass creat...
GIS
2009
ACM
14 years 4 months ago
2009
ACM
Volunteered geographic information such as that available in blogs, wikis, social networking sites, and community contributed photo collections is enabling new applications. This ...
HT
2009
ACM
14 years 4 months ago
2009
ACM
Data created by social bookmarking systems can be described as 3-partite 3-uniform hypergraphs connecting documents, users, and tags (tagging networks), such that the toolbox of c...