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New models for the clustering of large databases through a hierarchical paradigm
5th International Conference on Intelligent Systems Design and Applications (ISDA'05), 2005The recovery of information from large databases based on similarity approach supposes a high computational cost -when the process is carried out comparing each one of the records with the search pattern. If the database records store some data structure representing the information of the problem domain by means of a graph it is possible to classify ...
Irene Luque Ruiz +3 more
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Working with Hierarchical Databases in R to Model Geometallurgical Data
2016For the demands of geometallurgy a vast amount of data in multifaceted shape is needed. There are high resolution images from the MLA, data tables with information on the chemistry of some mineral phases, statistics on the distribution of the grain size, and so on.
Matos Camacho, S., Boogaart, K. G.
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Hierarchical multilevel processing model for natural language database interface
[1988] Proceedings. The Fourth Conference on Artificial Intelligence Applications, 2003A description is given of a multilevel natural language database interface system. The model is linguistically motivated, and linguistic analysis is deep. Certain human engineering aspects of its design are also emphasized. The processing levels are autonomous. Their formation has been dictated by the needs of an agglutinating language, Finnish. >
H. Jappinen +3 more
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Evaluating a Hierarchical Clinical Event Linkage Model for Clinic-Specific Databases
2015A relational database model is presented that stores the hierarchical linkages between clinical events with qualifier codes, such that the explicit contextual meaning of an event's attributes is preserved upon retrieval. A retrospective analysis of 302 forms built upon the model showed that 91% of 17,899 data elements requested by clinicians and ...
Justin Liu, Tran Truong
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Linguistic approach to database theory: DDL-s for hierarchical model
Information Systems, 1978Abstract In this paper a new approach to database systems based on the mathematical theory of linguistics is presented. It is assumed that any content of a database is a string of symbols. Then the expression of a data description language (DDL) can be considered a grammar which defines the set of strings; each of them may be the real content of ...
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Hierarchical Models for DNA Profiling Using Heterogeneous Databases
1999Abstract We consider forensic inference from DNA identification evidence, based on the “match probability”, for a genetically heterogeneous population. The genetic structure of the population is represented by a hierarchical model. Careful attention is given to the definition and use of the match probability, to the specification of ...
A Philip Dawid, John Pueschel
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An Auto-stopped Hierarchical Clustering Algorithm for Analyzing 3D Model Database
2005In the research of shape-based 3D model retrieval, the analysis and classification of 3D model database is an important topic for improving the retrieval performance. However, it encounters difficulties due to lack of valuable prior knowledge and the semantic gaps exist in 3D model retrieval.
Tian-yang Lv +4 more
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Database Performance Optimization for SQL Server Based on Hierarchical Queuing Network Model
International Journal of Database Theory and Application, 2015With the ever-increasing complexity and variety of database workload, database application system has been imposed on higher and higher performance requirements. Database system consists of software and hardware. And the factors that affect database performance are uncertain.
Jingbo Shao +3 more
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Journal of Petroleum Geology, 2011
Quantitative data on geobodies are crucial for reservoir modelling. Although abundant quantitative data are available in the literature for siliciclastic depositional systems, equivalent data for carbonate systems are scarce. In this paper we introduce a new approach to the management of quantitative data on carbonate geobodies which is based on a ...
A. Jung, T. Aigner
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Quantitative data on geobodies are crucial for reservoir modelling. Although abundant quantitative data are available in the literature for siliciclastic depositional systems, equivalent data for carbonate systems are scarce. In this paper we introduce a new approach to the management of quantitative data on carbonate geobodies which is based on a ...
A. Jung, T. Aigner
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2019 IEEE 14th International Conference on Intelligent Systems and Knowledge Engineering (ISKE), 2019
The overhead contact system (OCS) is the power source of electrified railway, it is very important to maintain the OCS safely, stably and efficiently. At present, reliability analysis is the main method to study OCS fault data. Most of fault trees include only part of components of OCS. However, there are few studies from system-wise perspective.
Kaiyi Qian, Long Yu, Yigu Liu
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The overhead contact system (OCS) is the power source of electrified railway, it is very important to maintain the OCS safely, stably and efficiently. At present, reliability analysis is the main method to study OCS fault data. Most of fault trees include only part of components of OCS. However, there are few studies from system-wise perspective.
Kaiyi Qian, Long Yu, Yigu Liu
openaire +1 more source