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One of the main theories behind the worldwide ‘Factories of the Future’ movement is the idea that machines and systems, and thus the production system, are getting far more interconnected with each other to finally reach a certain level of self-organization and autonomy. We support this autonomy of the production system by introducing a matching framework that is based on a novel application of the...
It seems that Semiotics and semantic information theories are closely related and complementary to each other, and therefore to study the link between them should be beneficial. Here, we briefly introduce our work in this direction.
Model mapping faces many challenging tasks and contemporary work seems to focus on computational issues. As a result it seems to lack an overarching theoretical framework whereby all aspects of model mapping can be investigated systematically. We maintain that the principles of semiotics may well provide theoretical foundations for developing such a framework. In this chapter we report our preliminary...
The notion of ‘classes of a path in an Entity-Relationship (ER) data schema’ has been proposed as a means of identifying and formalizing the capability of a database in answering a query. In the literature, a possible approach based upon Description Logics (DL) has been put forward to accurately and formally describe paths in ER schemata. However the reasoning part of classifications of paths has...
In the research area of questionnaire design, whether a questionnaire is a good design is still a hard question. In this paper, we shed some light on it by borrowing an idea of information integration, which makes use of the notion of information carrying relation. An information flow based approach is therefore proposed to tackle the problem of questionnaire design and find information carrying relations...
In this paper we propose a methodology whereby we semantically align heterogeneous databases without changing the databases. The alignment achieved is on the data instance level, which does not require the semantics of the data at the type level. We first introduce semantic alignment in the context of our databases research project then discuss in details how heterogeneous databases that are semantically...
The notion of 'classes of a path in an Entity-Relationship (ER) data schema' was put forward as a characterization of the capability of a schema of accommodating data instances whereby to provide information for various purposes including answering a query. Thus far though, criteria with which a process of classifying paths can be systematically carried out are yet to be found and formulated. To this...
To tackle the capability of a data schema of bearing information, a model for the definition and exploitation of what we call the 'Information Bearing Capability' of a database (IBC Model for short) model has been proposed. In this paper, we present the notion of IBC with a brief justification. We then describe the IBC model with a diagram and present a set of inference rules for reasoning about information...
In information systems integration, whether the instances of a schema of an information system may be recovered from those of another is a question, which seems profound, and yet has not been well investigated. We shed some light on it by using the notion of information carrying relation. In the literature, a conditional probability based approach has been proposed to finding such a relation within...
In database schema transformation, whether the instances of a schema may be recovered from those of another is a question, which seems profound., and yet having not been well investigated. We shed some light on it. In the literature, the work that is closest to this question is the notion of `relevant information capacity', which is concerned with whether one schema may replace another without losing...
The problem of ‘information content’ of an information system appears elusive. In the field of databases, the information content of a database has been taken as the instance of a database. We argue that this view misses two fundamental points. One is a convincing conception of the phenomenon concerning information in databases, especially a properly defined notion of ‘information content’. The other...
It is highly desirable to the distribute data and knowledge of a huge amount of domain specific database and to make them available readily to people, but the distributed and heterogeneous natural of the databases gives rise to the challenge of achieving the best retrieval results in cross-system searching. In order to make this difficult task tractable, we analyze semantic heterogeneities among these...
There is much interest in semantic gap shown in the literature, and yet little seems to have been done on measuring it with a scientific means. A conceptual data schema specifies the structure of the 'data base' for a computer based information system and provides abstraction of some part of the real world. Data constructs, which we call 'data level connections' ('data connections' for short), in...
A conceptual data schema specifies the structure of the 'data base' for a computer based information system. Data stored in the data base bear information that the information system provides. Thus the schema is the major factor that determines the information system's capability of providing information. In this paper, we propose four conditions for such information bearing capability, and then examine...
After constructing an entity-relationship (E-R) schema, how to evaluate it seems to remain as an open problem. In this article the authors present the notion of 'classification of a path in a schema' based upon conceptual and semantic analysis of a data modeling process, and a method for classifying a path by virtue of set theory. The authors also present detailed analysis of different classes of...
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