Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 40 for “"OLAP"”.
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Disclosure Limitation in OLAP
„OLAP“ (On-Line Analytical Processing) stellt für Business Intelligence (BI) das Basis-konzept zur Strukturierung von Datenbeständen dar und bietet dem Anwender gleichzeitig Methoden zu deren explorativen Analyse. Business Intelligence - und damit auch OLAP - dient der IT-getriebenen Analyse von …
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Multidimensional aggregation in OLAP systems
On-line analytical processing (OLAP) provides multidimensional data analysis to support decision making. OLAP queries require extensive computation based on aggregation along many dimensions and hierarchies. The time required to process these queries has traditionally prevented the interactive …
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Integrating OLAP and Ranking: The Ranking-Cube Methodology
… the problem of On-Line Analytical Processing (OLAP) of ranked queries, where ranked queries are conducted in the arbitrary subset of data defined by multi-dimensional selections. While pre-computation and multi-dimensional aggregation is the standard solution for OLAP, materializing dynamic …
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Szemantikus web technológiák alkalmazási lehetőségei az „exploratory” OLAP-ban
… ilyen rendszereket a szakirodalomban exploratory OLAP rendszereknek is nevezik. Az exploratory OLAP rendszerek területe meglehetősen új, a legelső modellek a szakirodalomban alig több, mint tíz éve jelentek meg. Fontos megjegyezni, hogy a legtöbb ilyen modell megmaradt koncepcionális szinten. …
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nD-SQL : extending schemaSQL towards multidimensional databases and OLAP
This thesis proposes a formal model for a federation of relational databases with possibly heterogeneous schemas. The Federation Model is comprehensive enough for: (i) capturing the diversity of schemas arising in practice, allowing a symmetric treatment of data and schema, and (ii) capturing the …
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ONet: Search, explore, and visualize hierarchical topic summarization on Twitter using network-OLAP
… the power of integration of data warehouse and OLAP technologies with information network. Based on Twitter data, ONet summarized important events at different granularities. With the interlinked events and other entities consisted in the network, we investigated some state-of-the-art ranking …
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Data warehousing, OLAP, and data mining : an integrated strategy for use at FAA
Thesis (S.B. and M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.
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Um Método para Seleção e Materialização de Visões com Assinaturas OLAP e Reactive GRASP-PR
… materialização de visões por meio de Assinaturas OLAP e algoritmos de otimização baseados na meta-heurística GRASP, Reactive GRASP e GRASP com Path-Relinking, visando maximizar o desempenho das consultas OLAP.
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Using On-line Analytical Processing (OLAP) and data mining to estimate emergency room activity in DoD Medical Treatment Facilities in the Tricare Central Region
On-line Analytical Processing (OLAP) and data mining can greatly enhance the ability of the Military Medical Treatment Facility (MTF) emergency room (ER) manager to improve ER staffing and utilization. MTF ER managers use statistical data analysis to help manage the efficient operation and use of …
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Energy advisory services at households
… de procesamiento on-line de análisis de datos( OLAP), computación afectiva y agentes interactivos virtuales. La contribución de la tesis es desarrollar un Asesor Energético Personal ,un sistema que permita asesorar a los clientes en cómo lograr comportamiento eficiente utilizando el lenguaje …
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A Comparison of Leading Database Storage Engines in Support of Online Analytical Processing in an Open Source Environment
<p>Online Analytical Processing (OLAP) has become the de facto data analysis technology used in modern decision support systems. It has experienced tremendous growth, and is among the top priorities for enterprises. Open source systems have become an effective alternative to proprietary systems in …
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Correlation indices : a new access method to exploit correlated attributes
… scan of the table. Online analytical processing (OLAP) workloads often do not benefit from the availability of unclustered indices; the cost of random disk I/O becomes prohibitive for all but the most selective queries. Unfortunately, this means that data warehouses and other OLAP systems …
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Keyword-based object search and exploration in multidimensional text databases
… with the aggregation and exploration power of OLAP in a text database with rich structured attributes available, e.g., a product review database. TEXplorer can be implemented within a multi-dimensional text database, where each row is associated with structural dimensions (attributes) and text …
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Multi-Dimensional Analysis of Graph Data
… future works, especially discovery-driven Graph OLAP. We believe that this is an interesting direction to go, and give our initial thoughts on it.
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Development of new data partitioning and allocation algorithms for query optimization of distributed data warehouse systems
… warehousing and on-line analytical processing (OLAP) are essential elements of decision support, the OLAP query response time is strongly affected by the volume of data need to be accessed from storage disks. Data partitioning is one of the physical design techniques that may be used to optimize …
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Novel Approaches to Overloaded Array Processing
… environments. Overloaded array processing (OLAP) is most difficult when signals impinging on the array are near equal power, have tight excess bandwidth, and are of identical signal type. Despite the failure of conventional beamforming in such environments, OLAP becomes possible when a …
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Construcció i explotació d'un magatzem de dades per a l'anàlisi d'informació sobre allotjaments turístics
… de datos y, concretamente, en sistemas ROLAP para dar respuesta a las necesidades de los entornos decisorios. En él se detallan los requisitos para desplegar un análisis de información sobre establecimientos turísticos, se expone la planificación, método basado en UML, el análisis, …
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Intelligente Analyse multidimensionaler Daten in einer visuellen Programmierumgebung und deren Anwendung in der Krebsepidemiologie
… Daten wird aktuell unter Schlagworten wie OLAP oder Data Warehousing vor allem im Hinblick auf mächtige, intuitiv nutzbare und effizient realisierte Analysefunktionen diskutiert. Typische Datenanalysen bestehen aus langen, aufeinander aufbauenden und verzweigten Sequenzen einzelner …
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Integrative text mining and management in multidimensional text databases
… dimensions, and the system should well support OLAP (online analytical processing) of the text information. This is a big challenge for most existing text mining techniques because of the efficiency and the scalability issues. On the other hand, the huge amount of text information in such …
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Ús d'una eina d'intel·ligència de negoci per l'estudi de teràpies en pacients amb trastorns cognitius
… (ETL) de les dades origen, disseny del cub OLAP i generació dels documents que formen el quadre de comandament. Resposta de les preguntes formulades en l'apartat d'objectius. Aproximació als algoritmes de creació de models predictius: descripció d'algoritmes usats i resultats. La implantació …
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