'Institute of Electrical and Electronics Engineers (IEEE)'
Doi
Abstract
The number of connected devices is expected to soar
in the coming years, each one of them collects and distributes
real-world information though various systems. As the number
of such connected devices grows, it becomes increasingly difficult
to store and share all these new sources of information. Several
context representation schemes try to standardize this information, however none of them have been widely adopted. Publish/
subscribe paradigm has proven to be an adequate abstraction
for large scale information dissemination, but none of current
variations is well suited for context information. In a previous
publication we addressed these challenges, however our solution
has some drawbacks: poor scalability and semantic extraction.
The aim of this paper is twofold. First, we discuss an efficient
way to deal with representation schemes diversity and propose a
d-dimensional context organization model. Second, we propose
a semantic-based publish/subscribe system that is well suited
for M2M scenarios. Our evaluation shows that
d-dimensional
organization model outperforms our previous solution in both
speed and space requirements
