Analytical Intelligence • Composition of technologies (2008)
Torben Bach Pedersen, Implementation In Rdbms
The grocery store
Privacy-Preserving Data Mining on Moving Object Trajectories. A DB (2008)
Győző Gidófalvi, Xuegang Huang, Torben Bach Pedersen
The popularity of embedded positioning technologies in mobile devices and the development of mobile communication technology have paved the way for powerful locationbased services (LBSs). To make...
Xuepeng Yin, Torben Bach Pedersen
– To support the real-time enterprise better – It’s still a very fresh topic • Traditional DBMS’s are designed for static data • Recent data stream management systems are not...
The OLAP-XML Federation System (2008)
Xuepeng Yin, Torben Bach Pedersen
We present the logical “OLAP-XML Federation System” that enables the external data available in XML format to be used as virtual dimensions. Unlike the complex and time-consuming physical...
Algebra-Based Optimization of XML-Extended OLAP Queries (2008)
Xuepeng Yin, Torben Bach Pedersen
In today’s OLAP systems, integrating fast changing data physically into a cube is complex and time-consuming. Our solution, the “OLAP-XML Federation System, ” makes it possible to reference the...
Gyozo Gidofalvi, Geomatic Aps, Tore Risch, Torben Bach Pedersen, Erik Zeitler
Transportation–related problems, like road congestion, parking, and pollution are increasing in most cities. In order to reduce traffic, recent work has proposed methods for vehicle sharing, for...
Title Specification-Based Data Reduction in Dimensional Data Warehouses (2007)
Author(s Janne Skyt, Christian S. Jensen, Christian S. Jensen, Torben Bach Pedersen, Torben Bach Pedersen, ...
URL: Any software made available via TIMECENTER is provided "as is " and without any express or implied warranties, including, without limitation, the implied warranty of...
Mobile E-Services and Their Challenges to Data Warehousing (2007)
Christian S. Jensen, Torben Bach Pedersen
Abstract. Continued advances in hardware technologies combine to create a new class of information services, termed mobile e-services, or simply m-services, which exploits the advances in, among...
Christian S. Jensen, Augustas Kligys, Torben Bach Pedersen, Igor Timko
The original publication is available at springerlink.com Copyright © Springer-Verlag
TIMECENTER Participants (2007)
Torben Bach Pedersen, Christian S. Jensen, Michael H. Böhlen, Renato Busatto, Curtis E. Dyreson, ...
Any software made available via TIMECENTER is provided “as is ” and without any express or implied warranties, including, without limitation, the implied warranty of merchantability and fitness...
Title Privacy-Preserving Data Mining on Moving Object Trajectories (2007)
Győző Gidófalvi, Xuegang Huang, Torben Bach Pedersen, Xuegang Huang, Torben Bach, ...
Any software made available via DB TECH REPORTS is provided “as is ” and without any express or implied warranties, including, without limitation, the implied warranty of merchantability and...
Title Algebra-Based Optimization of XML-Extended OLAP Queries (2006)
Xuepeng Yin, Torben Bach Pedersen, Author(s Xuepeng Yin, Torben Bach Pedersen
For additional information, see the DB TECH REPORTS homepage: 〈www.cs.aau.dk/DBTR〉. Any software made available via DB TECH REPORTS is provided “as is ” and without any express or implied...
Title Integrating Data Warehouses with Web Data: A Survey (2006)
Juan Manuel Pérez, Rafael Berlanga, María José Aramburu, Torben Bach Pedersen, Copyright Juan, Manuel Pérez, ...
For additional information, see the DB TECH REPORTS homepage: 〈www.cs.aau.dk/DBTR〉. Any software made available via DB TECH REPORTS is provided “as is ” and without any express or implied...
Music warehouses: Challenges for the next generation of music search engines (2006)
François Deliège, Torben Bach Pedersen
Abstract. Music Information Retrieval has received increasing attention from both the industrial and the research communities in recent years. Many audio extraction techniques providing content-based...
Music warehouses: Challenges for the next generation of music search engines (2006)
François Deliège, Torben Bach Pedersen
Abstract. Music Information Retrieval has received increasing attention from both the industrial and the research communities in recent years. Many audio extraction techniques providing content-based...
RelaXML: bidirectional transfer between relational and XML (2005)
Steffen Ulsø Knudsen, Ulsø Knudsen, Torben Bach Pedersen, Torben Bach Pedersen, Christian Thomsen, Christian Thomsen, ...
Any software made available via DB TECH REPORTS is provided “as is ” and without any express or implied warranties, including, without limitation, the implied warranty of merchantability and...
Probabilistic Data Modeling and Querying for Location-Based Data Warehouses (2005)
Igor Timko, Author(s Igor Timko, Curtis E. Dyreson, Curtis E. Dyreson, Curtis E. Dyreson, ...
For additional information, see the DB TECH REPORTS homepage: 〈www.cs.aau.dk/DBTR〉. Any software made available via DB TECH REPORTS is provided “as is ” and without any express or implied...
Title What can Hierarchies do for Data Streams (2005)
Xuepeng Yin, Torben Bach Pedersen, Author(s Xuepeng Yin, Torben Bach Pedersen
For additional information, see the DB TECH REPORTS homepage: 〈www.cs.aau.dk/DBTR〉. Any software made available via DB TECH REPORTS is provided “as is ” and without any express or implied...
Title Probability Distributions as Pre-Aggregated Data in Data Warehouses (2005)
Igor Timko, Curtis E. Dyreson, Torben Bach Pedersen, Curtis E. Dyreson, Torben Bach Pedersen, ...
For additional information, see the DB TECH REPORTS homepage: 〈www.cs.aau.dk/DBTR〉. Any software made available via DB TECH REPORTS is provided “as is ” and without any express or implied...
Synchronizing XPath Views (2004)
Dennis Pedersen, Torben Bach, Pedersen All, Author(s Dennis Pedersen, Torben Bach Pedersen, ...
For additional information, see the DB TECH REPORTS homepage: 〈www.cs.auc.dk/DBTR〉. Any software made available via DB TECH REPORTS is provided “as is ” and without any express or implied...
Title Integrating XML Data In The TARGIT OLAP System (2004)
Dennis Pedersen, Jesper Pedersen, Torben Bach Pedersen, Jesper Pedersen, Torben Bach, ...
For additional information, see the DB TECH REPORTS homepage: 〈www.cs.auc.dk/DBTR〉. Any software made available via DB TECH REPORTS is provided “as is ” and without any express or implied...
Data Modeling for Mobile Services (2003)
In The Real, Christian S. Jensen, Torben Bach Pedersen, Laurynas Speičys, Igor Timko
Research contributions on data modeling, data structures, query processing, and indexingf or mobile services may have an impact in the longer term, but each contribution typically o#ers an isolated...
A Powerful and SQL-Compatible Data Model and Query Language for OLAP (2002)
Dennis Pedersen, Karsten Riis, Torben Bach Pedersen
In this paper we present the SQL OLAP data model, formal algebra, and query language that, unlike current OLAP data models and languages, are both powerful, meaning that they support irregular...
Multidimensional Data Modeling for Location-Based Services (2002)
Christian S. Jensen, Christian S. Jensen, Augustas Kligys, Augustas Kligys, Torben Bach Pedersen, Torben Bach Pedersen, ...
With the recent and continuing advances in areas such as wireless communications and positioning technologies, mobile, location-based services are becoming possible. Such services deliver...
XML-Extended OLAP Querying (2002)
Dennis Pedersen, Dennis Pedersen, Karsten Riis, Karsten Riis, Torben Bach Pedersen, Torben Bach Pedersen
The rapidly changing data requirements of today’s dynamic business environments are not handled well by current On-Line Analytical Processing (OLAP) systems. Physically integrating data from new...
A Hybrid Approach to Web Usage Mining (2002)
Søren E. Jespersen, Søren E. Jespersen, Jesper Thorhauge, Jesper Thorhauge, Torben Bach Pedersen, Torben Bach Pedersen
on the web, or web mining, has become an important research area. Web usage mining, which is the main topic of this paper, focuses on knowledge discovery from the clicks in the web log for a given...
Authors: Dennis Pedersen (2002)
Dennis Pedersen, Dennis Pedersen, Karsten Riis Torben, Karsten Riis, Torben Bach Pedersen, Torben Bach Pedersen
The changing data requirements of today's dynamic business environments are not handled well by current On-Line Analytical Processing (OLAP) systems. Physically integrating unexpected data into...
Cost Modeling and Estimation (2002)
Dennis Pedersen, Dennis Pedersen, Karsten Riis, Karsten Riis, Torben Bach Pedersen, ...
The ever-changing data requirements of today's dynamic businesses are not handled well by current OnLine Analytical Processing (OLAP) systems. Physical integration of unexpected data into OLAP...
Specifying OLAP cubes on XML data (2001)
R. Jensen, Mikael R. Jensen, Thomas H. Møller, Thomas H. Møller, Torben Bach Pedersen, Torben Bach Pedersen
On-Line Analytical Processing (OLAP) enables analysts to gain insight into data through fast and interactive access to a variety of possible views on information, organized in a dimensional model....
Speci Data Reduction in Dimensional Data Warehouses", TimeCenter TechReport TR-61 (2001)
Janne Skyt, Christian S. Jensen, Torben Bach Pedersen
Data warehouses are often very large, with new data being appended regularly. The sheer size and complexity of such warehouses makes them hard to manage effectively and to query with the desired...
Speci Data Reduction in Dimensional Data Warehouses", TimeCenter TechReport TR-61 (2001)
Janne Skyt, Christian S. Jensen, Torben Bach Pedersen
©2002 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale...
ENTER IME� Specification-Based Data Reduction in Dimensional Data Warehouses (2001)
Janne Skyt, Christian S. Jensen, Torben Bach Pedersen, Janne Skyt, Christian S. Jensen, Torben Bach Pedersen, ...
Copyright c
Converting XML Data to UML Diagrams For Conceptual Data Integration (2001)
Mikael R. Jensen, Thomas H. Møller, Torben Bach Pedersen
The demand for data integration is rapidly becoming larger as more and more information sources appear in modern enterprises. In many situations a logical (rather than physical) integration of data...
Specifying OLAP cubes on XML data (2001)
R. Jensen, Thomas H. Møller, Torben Bach Pedersen
Abstract. On-Line Analytical Processing (OLAP) enables analysts to gain insight about data through fast and interactive access to a variety of possible views on information, organized in a...
Extending OLAP Querying to External Object Databases (2000)
Bach Pedersen, Arie Shoshani, Junmin Gu, Torben Bach Pedersen, Shoshani Arie, Gu Junmin, ...
On-Line Analytical Processing (OLAP) systems based on a dimensional view of data have found widespread use in business applications and are being used increasingly in non-standard applications. These...
Analyzing Clickstreams Using Subsessions (2000)
Allan H. Jensen, Rune S. Larsen, Torben Bach Pedersen, Jesper Andersen, Jesper Andersen, Anders Giversen, ...
Analyzing data obtained from web server logs, so-called “clickstreams”, is rapidly becoming one of the most important activities for companies in any sector as most businesses become...
Extending OLAP Querying to External Object Databases (2000)
Torben Bach Pedersen, Arie Shoshani, Junmin Gu, Christian S. Jensen
On-Line Analytical Processing (OLAP) systems based on a multidimensional view of data have found widespread use in business applications and are being used increasingly in non-standard applications....
The TreeScape System: Reuse of Pre-Computed Aggregates over Irregular OLAP Hierarchies (2000)
Torben Bach Pedersen, Pedersený Christian, Christian S. Jensen, Curtis E. Dyreson
We present the TreeScape system that, unlike any other system known to the authors, enables the reuse of pre-computed aggregate query results for irregular dimension hierarchies, which occur...
Aspects of Data Modeling and Query Processing for Complex Multidimensional Data (2000)
Torben Bach Pedersen, Torben Bach Pedersen, Company Kommunedata A/s
This thesis is about data modeling and query processing for complex multidimensional data. Multidimensional data has become the subject of much attention in both academia and industry in recent...
The TreeScape System: Reuse of Pre-Computed Aggregates over Irregular OLAP Hierarchies (2000)
Torben Bach Pedersen, Pedersen Christian, Curtis E. Dyreson, Christian S. Jensen
We present the TreeScape system that, unlike any other system known to the authors, enables the reuse of pre-computed aggregate query results for irregular dimension hierarchies, which occur...
Extending OLAP Querying to External Object Databases (2000)
On-Line Analytical Processing (OLAP) systems based on a multidimensional view of data have found widespread use in business applications and are being used increasingly in non-standard applications....
Extending Practical Pre-Aggregation in On-Line Analytical Processing (1999)
On-Line Analytical Processing (OLAP) based on a dimensional view of data is being used increasingly for the purpose of analyzing very large amounts of data. To improve query performance, modern OLAP...
Extending Practical Pre-Aggregation in On-Line Analytical Processing (1999)
On-Line Analytical Processing (OLAP) based on a dimensional view of data is being used increasingly for the purpose of analyzing very large amounts of data. To improve query performance, modern OLAP...
Multidimensional Data Modeling for Complex Data (1999)
©1999 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale...
Supporting Imprecision in Multidimensional Databases Using Granularities (1999)
On-Line Analytical Processing (OLAP) technologies are being used widely for business-data analysis, and these technologies are also being used increasingly in medical applications, e.g., for...
Supporting Imprecision in Multidimensional Databases Using Granularities (1999)
On-Line Analytical Processing (OLAP) technologies are being used widely, but the lack of effective means of handling data imprecision, which occurs when exact values are not known precisely or are...
Extending Practical Pre-Aggregation in On-Line Analytical Processing (1999)
Torben Bach Pedersen, Christian S. Jensen, Curtis E. Dyreson
On-Line Analytical Processing (OLAP) based on a dimensional view of data is being used increasingly for the purpose of analyzing very large amounts of data. To improve query performance, modern OLAP...
Supporting Imprecision in Multidimensional Databases Using Granularities (1999)
Torben Bach Pedersen, Christian S. Jensen, Curtis E. Dyreson
On-Line Analytical Processing (OLAP) technologies are being used widely, but the lack of effective means of handling data imprecision, which occurs when exact values are not known precisely or are...
Supporting Imprecision in Multidimensional Databases Using Granularities (1999)
Torben Bach Pedersen, Pederseny Christian, Christian S. Jensen, Curtis E. Dyreson
On-Line Analytical Processing (OLAP) technologies are being used widely for business-data analysis, and these technologies are also being used increasingly in medical applications, e.g., for...
Extending Practical Pre-Aggregation (1999)
On-Line Analytical Processing (OLAP) based on a dimensional view of data is being used increasingly in traditional business applications as well as in applications such as health care for the purpose...
Supporting Imprecision in Multidimensional Databases Using Granularities (1999)
On-Line Analytical Processing (OLAP) technologies are being used widely, but the lack of effective means of handling data imprecision, which occurs when exact values are not known precisely or are...
Extending Practical Pre-Aggregation in On-Line Analytical Processing (1999)
On-Line Analytical Processing (OLAP) based on a dimensional view of data is being used increasingly for the purpose of analyzing very large amounts of data. To improve query performance, modern OLAP...
Research Issues in Clinical Data Warehousing (1998)
Torben Bach Pedersen, Christian S. Jensen
Medical informatics has been an important area for the application of computing and database technology for at least four decades. This area may benefit from the functionality offered by data...
Multidimensional Data Modeling for Complex Data (1998)
Torben Bach Pedersen, Christian S. Jensen, Michael H. Bohlen, Renato Busatto, Curtis E. Dyreson, ...
Systems for On-Line Analytical Processing (OLAP) considerably ease the process of analyzing business data and have become widely used in industry. OLAP systems primarily employ multidimensional data...
Research Issues in Clinical Data Warehousing (1998)
Medical informatics has been an important area for the application of computing and database technology for at least four decades. This area may benefit from the functionality offered by data...