Global Positioning System Reference
In-Depth Information
In the following chapters, the technologies of positioning and related systems
will be discussed but it might be worthwhile to refer to this diagram from time to
time to see the bigger picture. In the final chapter, this topic will be revisited but
from a different perspective: that of the information spaces, using the principles of
the Semantic Web to bring together the fragments of information needed to create
intelligent services and encoding them according to an ontology
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for ubiquitous
positioning. Given the complexity of service provision illustrated in Figure 3.2, it
is envisaged that Whereness service provides may be able to save expensive
software integration by automating the process by adopting a Semantic Web
approach.
3.11
User groups
There are many ways to group services according to users, customers, business
sectors, or organizations. Figure 3.3 shows one useful method that separates
personal life from work life and that shows some of the most relevant business
sectors to services. Starting with a person, that person is likely to have social and
work-related requirements. Although a common system might be used, the
services are likely to be needed separately (in the same way that a person might
have two mobile phones, one for work and the other for home).
Figure 3.3
Classes of users.
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Ontology is a key concept of the Semantic Web and is explained in Section 9.3.1.
