1,005 Result(s)
within
English
Computer Science
Information Systems Applications (incl. Internet)
Ben Ep**er
Conference Paper
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Chapter and Conference Paper
Database support for efficiently maintaining derived data
Derived data is maintained in a database system to correlate and summarize base data which record real world facts. As base data changes, derived data needs to be recomputed. A high performance system should e...
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Chapter and Conference Paper
Using recurrent selection to improve GA performance
Genetic algorithms (GA's) are based on the idea that solutions to otherwise intractable problems can be derived by mimicking natural evolution. With a few exceptions, however, GA's are limited to haploid imple...
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Chapter and Conference Paper
Determining attribute relevance in decision trees
Concept formation, an artificial intelligence classification technique, has been used successfully by many researchers in predicting outcomes of new objects based on a decision tree built from previously seen ...
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Chapter and Conference Paper
Trend graphs: Visualizing the evolution of concept relationships in large document collections
The proliferation of digitally available textual data necessitates automatic tools for analyzing large textual collections. Thus, in analogy to data mining for structured databases, text mining is defined for tex...
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Chapter and Conference Paper
Barter: A backbone architecture for trade of electronic content
Barter is a scalable, highly-available and efficient electronic commerce system that facilitates digital content trade over an open network. Barter is designed to operate over a large-scale, global...
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Chapter and Conference Paper
A Fast Algorithm for Density-Based Clustering in Large Database
Clustering in large database is an important and useful data mining activity. It expects to find out meaningful patterns among the data set. Some new requirements of clustering have been raised : good efficien...
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Chapter and Conference Paper
A Study on Musical Features for Melody Databases
The design of content-based music retrieval systems on the Web is a challenge, since music is auditory, temporal, and multidimensional — the same piece can be interpreted in multiple ways. Most literatures on ...
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Chapter and Conference Paper
DROLAP - A Dense-Region Based Approach to On-Line Analytical Processing
ROLAP (Relational OLAP) and MOLAP (Multidimensional OLAP) are two opposing techniques for building On-line Analytical Processing (OLAP) systems. MOLAP has good query performance while ROLAP is based on mature ...
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Chapter and Conference Paper
LGen — A Lattice-Based Candidate Set Generation Algorithm for I/O Efficient Association Rule Mining
Most algorithms for association rule mining are variants of the basic Apriori algorithm [2]. One characteristic of these Aprioribased algorithms is that candidate itemsets are generated in rounds, with the size o...
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Chapter and Conference Paper
Feature Extraction Using Fractal Codes
Fast and successful searching for an object in a multimedia database is a highly desirable functionality. Several approaches to content based retrieval for multimedia databases can be found in the literature [9,1...
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Chapter and Conference Paper
BRRA: A Based Relevant Rectangles Algorithm for Mining Relationships in Databases
Data mining is the discovery of previously unknown or hidden and potentially useful knowledge in databases. In this paper, we present an algorithm, called BRRA, that mines relationships in a database in order ...
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Chapter and Conference Paper
Change Detection by Classification of a Multi-temporal Image
Kee** track of changes in our environment is an important application of remote sensing. To express those changes in terms or thematic classes can be done by comparing classifications of different dates, whi...
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Chapter and Conference Paper
Dynamic Configuration and Enforcement of Access Control for Mobile Components
Dynamic execution layout is the capability to (re)map at runtime the logical components of a distributed application onto physical hosts. From the resource management perspective, this paradigm raises three ch...
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Chapter and Conference Paper
An Optimization Problem in Data Cube System Design
In an OLAP system, we can use data cubes (precomputed multidimensional views of data) to support real-time queries. To reduce the maintenance cost, which is related to the number of cubes materialized, some cu...
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Chapter and Conference Paper
Text-Source Discovery and GlOSS Update in a Dynamic Web
“Text-source discovery” is the problem of identifying relevant document databases that potentially contain documents that match a user query. GlOSS [6] is a cost-effective technique for solving the text-source di...
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Chapter and Conference Paper
Meta-queries - Computation and Evaluation
Metaquery (also known as metapattern) is a datamining tool useful for learning rules involving more than one relation in the database. A metaquery is a template, or a second-order proposition in a language that d...
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Chapter and Conference Paper
Exploiting the Duality of Maximal Frequent Itemsets and Minimal Infrequent Itemsets for I/O Efficient Association Rule Mining
Any algorithm for mining association rules must discover the set of all maximal frequent itemsets (maxL) from a database. Given a set of itemsets X, to verify that X is maxL, two conditions must be checked: (1) a...
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Chapter and Conference Paper
An Adaptive Document Generation Based on Matrix of Contents
We describe the mechanism used in the CAMELEON system to produce contents adapted to the user. The mechanism is based on matrix products using representations of users and contents by means of boolean vectors.
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Chapter and Conference Paper
Completing missing values using discovered formal concepts
Over the past decades there has been a huge increase in the amount of data being stored in databases as well as the number of database applications in business and the scientific domain. This explo- sion has p...
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Chapter and Conference Paper
Efficient Algorithms for Concept Space Construction
The vocabulary problem in information retrieval arises because authors and indexers often use different terms for the same concept. A thesaurus defines map**s between different but related terms. It is widel...
