Julius Stuller | Academy of Sciences of the Czech Republic (original) (raw)

Papers by Julius Stuller

Lecture Notes in Computer Science, 2014

The use of general descriptive names, registered names, trademarks, service marks, etc. in this p... more The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. While the advice and information in this book are believed to be true and accurate at the date of publication, neither the authors nor the editors nor the publisher can accept any legal responsibility for any errors or omissions that may be made. The publisher makes no warranty, express or implied, with respect to the material contained herein.

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Proceedings of SPIE, Apr 6, 2000

The technological progress in the areas of the hardware, specially in the field of the (secondary... more The technological progress in the areas of the hardware, specially in the field of the (secondary) memories where the ever increasing capacities are paradoxically in the last several years available at ever decreasing prices and smaller physical sizes, and the software, continuously more and more user friendly, efficient and cheaper, together with the general expansion of the computers to almost all human activities, make it easier to realize the integration of many already existing databases. Unfortunately the process of databases integration can be accompanied by many various difficulties and problems. One of them is surely the possible occurrence of the inconsistencies appearing in this process of the integration. As we will see these inconsistencies can occur at various levels and they can be of different types. At the next stage some users go even further and try to get more from the accumulated data through data mining techniques. A data warehouse can be considered as a suitable technology for this purpose. Having in mind the data mining view of a data warehouse, one needs to know the sources of possible inconsistencies when building such a data warehouse in order to eliminate them as much as possible. In the paper we will define several existence conditions under which can occur different types of the inconsistencies in a warehouse and we will propose a classification of these inconsistencies based on the their sources. We will also propose a methodology and a procedure both of which aim at the elimination of these inconsistencies.

ITAT, 2009

The ability to import ontologies safely, that is, without changing the original meaning of their ... more The ability to import ontologies safely, that is, without changing the original meaning of their terms, has been identified as crucial for the collaborative development and the reuse of (OWL) ontologies. In this paper, we propose the notion of local safety of an ontology and we identify scenarios in which this notion may be useful in guiding the development of an ontology that is to import other ontologies safely.

Springer eBooks, 1995

Multiple databases may store data about the same slice of the reality. Naturally one may try to g... more Multiple databases may store data about the same slice of the reality. Naturally one may try to get the overall complex information as a result of integrating data from these different databases. And, also naturally, one is immediately facing the problems of the inconsistency (in the sense of the classical logic), which are amplified if one admit the temporal dimension (leading to the temporal logic) and the uncertainty (leading, for instance, to the fuzzy logic or the possibilistic logic).

ABSTRACT Knowledge can be used for description, sorting and searching of useful data. Knowledge, ... more ABSTRACT Knowledge can be used for description, sorting and searching of useful data. Knowledge, on the other hand, may be very narrowly connected with a person, who may leave a company. Such situation can be avoided by using of ontology as a tool of knowledge engineering or in general as a tool for knowledge representation. The paper presents on ontology design to peculiarities of humin substances based on analysis of existing similar type ontologies. It enables to preserve, make accessible and reuse gained experiences, for instance for design of functionally rich, flexible and easy integrable systems and applications. In introduction this work presents an overview of selected formalisms for interception of data structure and processes in humin substances area with respect to using ontologies and their possibilities. The paper is especially a case study of ontology application for evidence and data organization of humin substances, their measurement and experimentations, where use of ontologies is not yet common. It shows a potential of ontologies and illustrates parameters of generally applicable model for such area.

Conference on Theory and Practice of Information Technologies, 2009

Lecture Notes in Computer Science, 2000

The remarkable advances made in computer and communication hardware/software system technologies ... more The remarkable advances made in computer and communication hardware/software system technologies have made it possible for us to use multimedia data for many purposes in various service areas. Considering the importance of developing an advanced processing environment for the acquisition, management, retrieval, creation, and utilization of large amounts of multimedia content, the “Advanced Multimedia Content Processing (AMCP)” research project has been started in Japan, focussing on the management of the continuous and semistructured features of multimedia content. In this paper, we will present a part of research results achieved by this project, along with the process from the first time the multimedia content is acquired/organized until it is delivered to and presented at the client side.

This book constitutes the refereed proceedings of the 30th Conference on Current Trends in Theory... more This book constitutes the refereed proceedings of the 30th Conference on Current Trends in Theory and Practice of Computer Science, SOFSEM 2004, held in Merín, Czech Republic, in January 2004. The volume presents 10 invited lectures and 22 full papers selected from 136 submissions. Among the topics covered are computer science theory, programming theory, database systems, information systems, cognitive technologies and Web technologies.

Sofsem, 2004

Data Mining and Knowledge Discovery: Theory, Tools, and Technology II, 2000