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DATESO
2009
121views Database» more  DATESO 2009»
9 years 13 days ago
Five-Level Multi-Application Schema Evolution
Schema evolution has recently gained much interest in both research and practice. However, most of the existing works deal with separate aspects of the problem such as evolution of...
Martin Necaský, Irena Mlýnková...
DATESO
2009
158views Database» more  DATESO 2009»
9 years 13 days ago
Benchmarking Coding Algorithms for the R-tree Compression
Multi-dimensional data structures have been widely applied in many data management fields. Spatial data indexing is their natural application, however there are many applications i...
Jirí Walder, Michal Krátký, R...
DATESO
2009
109views Database» more  DATESO 2009»
9 years 13 days ago
Various aspects of user preference learning and recommender systems
In this paper, we describe area of recommender systems, with focus on user preference learning problem. We describe such system and identify some interesting problems. We will comp...
Alan Eckhardt
DATESO
2009
114views Database» more  DATESO 2009»
9 years 13 days ago
Speeding Up Shortest Path Search in Public Transport Networks
Abstract. The searching for the shortest path in public transport networks can take more time than is acceptable for given situation. We have therefore searched for methods that sp...
Vladislav Martinek, Michal Zemlicka
DATESO
2009
121views Database» more  DATESO 2009»
9 years 13 days ago
Translation of Ontology Retrieval Problem into Relational Queries
Ontology as a knowledge base can provide different reasoning tasks, e.g. to check consistency of the ontology or to check whether a resource is instance of a concept or not. In thi...
Jaroslav Pokorný, Jana Pribolová, Pe...
DATESO
2009
269views Database» more  DATESO 2009»
9 years 13 days ago
The BPM to UML activity diagram transformation using XSLT
The Business Process Model represented as a diagram in Business Process Modeling Notation (BPMN) is a commonly used way how to describe business processes of an organization. Probl...
Ondrej Macek, Karel Richta
DATESO
2009
101views Database» more  DATESO 2009»
9 years 13 days ago
Dimension Reduction Methods for Iris Recognition
In this paper, we compare performance of several dimension reduction techniques, namely LSI, FastMap, and SDD in Iris recognition. We compare the quality of these methods from both...
Pavel Moravec, Václav Snásel
DATESO
2009
105views Database» more  DATESO 2009»
9 years 13 days ago
From Web Pages to Web Communities
In this paper we are looking for a relationship between the intent of Web pages, their architecture and the communities who take part in their usage and creation. From our point of...
Milos Kudelka, Václav Snásel, Zdenek...
DATESO
2009
101views Database» more  DATESO 2009»
9 years 13 days ago
Using Top Trees For Easy Programming of Tree Algorithms
Top trees are a dynamic self-adjusting data structure that can be used by any tree algorithm. Actually, an arbitrary number of different tree algorithms can use a single structure....
Michal Vajbar
DATESO
2009
119views Database» more  DATESO 2009»
9 years 13 days ago
Efficiency Improvement of Narrow Range Query Processing in R-tree
Indexing methods for efficient processing of multidimensional data are very requested in many fields, like geographical information systems, drawing documentations etc. Well-known ...
Peter Chovanec, Michal Krátký
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