  The Internet of Things (IoT) is experiencing fast adoption in the society,
from industrial to home applications. The number of deployed sensors and
connected devices to the Internet is changing our perspective and the way we
understand the world. The development and generation of IoT applications is
just starting and they will modify our physical and virtual lives, from how we
control remotely appliances at home to how we deal with insurance companies in
order to start insurance schemes via smart cards. This massive deployment of
IoT devices represents a tremendous economic impact and at the same time offers
multiple opportunities. However, the potential of IoT is underexploited and day
by day this gap between devices and useful applications is getting bigger.
Additionally, the physical and cyber worlds are largely disconnected, requiring
a lot of manual efforts to integrate, find, and use information in a meaningful
way.
  To build a connection between the physical and the virtual, we need a
knowledge framework that allow bilateral understandings, devices producing
data, information systems managing the data and applications transforming
information into meaningful knowledge. The first column in this series in the
previous issue of this magazine titled "Internet of Things to Smart IoT Through
Semantic, Cognitive, and Perceptual Computing," reviews IoT growth and
potential that have energized research and technology development, centered on
aspects of Artificial Intelligence to build future intelligent system. This
column steps back and demonstrates the benefits of using semantic web
technologies to get meaningful knowledge from sensor data to design smart
systems.
