Creation of Ontological Knowledge Bases in the Semantic Web …
213
between ontology and source formats and eliminates differences in the forms of
writing values, languages, units, etc. Next, the SSK data is converted to the format
used by OKB.
The approach under consideration is characterized by high quality of the formation
of knowledge bases on predefined templates of tabular structures and terminology
used to represent concepts. At the same time, the complexity of organizing the process
of forming knowledge bases and the need to first create a basic specification used
in terminology sources in the form of a top-level ontology creates a problem for the
widespread introduction of this approach. This study is devoted to eliminating the
shortcomings of the approach presented in this subsection.
3 The Methodological Basis for the Presentation of Table
Structures as Sources of Knowledge in Semantic Web
Systems
The extensive development of the Semantic Web initiative led to the emergence of
new structures for the representation of knowledge—ODR objects, descriptions of
which are distributed on the Web; value properties; properties-objects that provide a
high level of semantics-level interoperability between software applications. It should
be noted that the ODR objects in the Semantic Web are a descriptive specification
of objects, which does not allow them to be processed in machine processing as
something active, containing methods for processing the data of these objects, as is
customary in the object paradigm. The methods for processing ODR objects in the
Semantic Web are external to these ODR objects. In addition, the lack of tools for
specifying and accounting for changes in the state of ODR objects causes certain
difficulties during the organization of the formation of OKB based on SKTS.
OKB is based on the concept of a class-subclass object hierarchy, where a class is
the formal structure of some ODR entity, a subclass is a class that inherits the structure
of one or more superclasses, a superclass is a class whose structure is inherited by
other classes, type is a range of valid values that can take an instance of a class, an
instance of a class is a specific ODR entity.
Given the above, OKB will be formally represented as a set of explicit specifications of knowledge about ODR in the form of structural logic diagrams of the
relationships (R) of ODR objects (C) of ontology (Ont) and instances of the ODR
objects that make it up (I
U
):
BOZ =< Ont, I
U
> .
(1)
The OKB ontology structure is defined as a combination of three interconnected
components:
Ont =< C
U
, D
U
, F
U
>,
(2)
213
between ontology and source formats and eliminates differences in the forms of
writing values, languages, units, etc. Next, the SSK data is converted to the format
used by OKB.
The approach under consideration is characterized by high quality of the formation
of knowledge bases on predefined templates of tabular structures and terminology
used to represent concepts. At the same time, the complexity of organizing the process
of forming knowledge bases and the need to first create a basic specification used
in terminology sources in the form of a top-level ontology creates a problem for the
widespread introduction of this approach. This study is devoted to eliminating the
shortcomings of the approach presented in this subsection.
3 The Methodological Basis for the Presentation of Table
Structures as Sources of Knowledge in Semantic Web
Systems
The extensive development of the Semantic Web initiative led to the emergence of
new structures for the representation of knowledge—ODR objects, descriptions of
which are distributed on the Web; value properties; properties-objects that provide a
high level of semantics-level interoperability between software applications. It should
be noted that the ODR objects in the Semantic Web are a descriptive specification
of objects, which does not allow them to be processed in machine processing as
something active, containing methods for processing the data of these objects, as is
customary in the object paradigm. The methods for processing ODR objects in the
Semantic Web are external to these ODR objects. In addition, the lack of tools for
specifying and accounting for changes in the state of ODR objects causes certain
difficulties during the organization of the formation of OKB based on SKTS.
OKB is based on the concept of a class-subclass object hierarchy, where a class is
the formal structure of some ODR entity, a subclass is a class that inherits the structure
of one or more superclasses, a superclass is a class whose structure is inherited by
other classes, type is a range of valid values that can take an instance of a class, an
instance of a class is a specific ODR entity.
Given the above, OKB will be formally represented as a set of explicit specifications of knowledge about ODR in the form of structural logic diagrams of the
relationships (R) of ODR objects (C) of ontology (Ont) and instances of the ODR
objects that make it up (I
U
):
BOZ =< Ont, I
U
> .
(1)
The OKB ontology structure is defined as a combination of three interconnected
components:
Ont =< C
U
, D
U
, F
U
>,
(2)