Semantic Web-Based Information Systems: State-of-the-Art ...

0 Cr stan & Cuel
Table 3. Methontology through our framework
Name.of.the.Phase. Input. Description. Output.
Planning
Specification
Conceptualization
Formalization
Integration
Implementation
Maintenance
Acquisition
Evaluation
Documentation
Nothing: first step
A series of question
such as: “Why is this
ontology being built
and what are its
intended uses and endusers?”
A good specification
document
Conceptual model
Existing ontologies and
the formal model
Formal model
Computable ontology
Plan the main tasks to be done,
the way in which they will be
arranged, the time and resources
that are necessary to perform
these tasks
Identify ontology’s goals
Conceptualize in a model that
describes the problem and its
solution. To identify and gather
all the useful and potentially
usable domain knowledge and its
meanings
Transform conceptual model into
a formal or semi-compatible
model, using frame-oriented or
description logic representation
systems
Processes of inclusion,
polymorphic refinement, circular
dependencies, and restriction.
For example, select meta
ontologies that better fit the
conceptualisation
Select target language
Including, modifying definition
in the ontology
Searching and listing knowledge
sources through non-structured
interviews with experts, informal
text analysis, formal text
analysis, structured interviews
with experts to have detailed
information on concepts, terms,
meanings, and so on
Technical judgment with respect
to a frame of reference
A project plan
Ontology requirements specification document,
specifying purposes and scopes. Its goal is to produce
either an informal, semi-formal, or formal ontology
specification document written in natural language, using
a set of intermediate representations or using competency
questions, respectively. The document has to provide at
least the following information: the purpose of the
ontology (including its intended uses, scenarios of use,
end-users, etc.); the level of formality used to codify
terms and meanings (highly informal, semi-informal,
semi-formal, rigorously formal ontologies); the scope; its
characteristics and granularity. Properties of this
document are: concision, partial completeness, coverage
of terms, the stopover problem and level of granularity of
ache and every term, and consistency of all terms and
their meanings.
A complete glossary of terms (including concepts,
instances, verbs, and properties). Then, a set of
intermediate representations such as concepts
classification trees, verb diagram, table of formulas, and
table of rules. The aim is to allow the final user to
ascertain whether or not an ontology is useful and to
compare the scope and completeness of several
ontologies, their reusability, and shareability.
Formal conceptualization
Create a computable ontology
Guidelines for maintaining ontologies
A list of the sources of knowledge and a rough
description of how the process will be carried out and
what techniques will be used.
A formal and correct ontology
Specification document must have the property of
concision
Copyright © 2007, Idea Group Inc. Copying or distributing in print or electronic forms without written permission of
Idea Group Inc. is prohibited.