Database Reference
In-Depth Information
A major challenge in sensor-based social networking are the pri-
vacy issues inherent in the underlying applications. For example,
individuals may not be willing to disclose their locations [66] in
order to enable applications such as proximity alerts. In many
cases, such constraints can greatly reduce the functionality of such
applications. A major challenge in such applications is to provide
individual hard guarantees on their privacy level, so that they be-
come more willing to share their real time information.
The trust issues continue to be a challenge for such applications,
because of the openness of such systems in allowing participants
to contribute information. Furthermore, the goals of privacy and
trust seem to be at odds with one another, because the former is
achieved by lowering data fidelity, and the latter requires higher
data fidelity.
Battery life continues to be a severe constraint in such applica-
tions. Therefore, it is critical to tailor application design to work
eciently in power-constrained scenarios.
The architectural challenges for such systems continue to be quite
extensive. For example, the use of centralized processing methods
for such large systems does not scale well. Therefore, new methods
[120, 127] have moved away from the centralized architecture for
stream collection and processing.
The future challenges of such research include the development of new
algorithms for large scale data collection, processing and storage. Some
advancements [7, 120, 127] have already been made in this direction.
Acknowledgements
Research was sponsored by the Army Research Laboratory and was
accomplished under Cooperative Agreement Number W911NF-09-2-0053.
The views and conclusions contained in this document are those of the
authors and should not be interpreted as representing the ocial poli-
cies, either expressed or implied, of the Army Research Laboratory or
the U.S. Government. The U.S. Government is authorized to reproduce
and distribute reprints for Government purposes notwithstanding any
copyright notation here on.
