  The availability of advanced social interaction sensing technologies provides
fine grained data for social network analysis. Although traditional methods of
gathering social network data may be subject to human ability to recall social
details, people's rating of their closeness to persons in their network is
important. This study assesses the relationship amidst closeness ratings,
sensed interactions and shared places of recreation. The study found that
people tend to give high closeness ratings to people with whom they spend more
time. Shared places are correlated to social closeness ratings but not to
length of interactions. The results of this study highlight the importance of
sensed interactions and closeness ratings.
