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Storing Owl Ontologies In Sql Relational Databases

Irina Astrova, Nahum Korda, Ahto Kalja
2007 Zenodo  
Ahto Kalja is with the Institute of Cybernetics, Tallinn University of Technology, Estonia (e-mail: ahto@cs.ioc.ee). maturity, performance, robustness, reliability, and availability. II.  ...  Storing OWL Ontologies in SQL Relational Databases International Science Index, Computer and Information Engineering Vol:1, No:5, 2007 waset.org/Publication/8866 Irina Astrova, Nahum Korda, and Ahto Kalja  ... 
doi:10.5281/zenodo.1071690 fatcat:brtb25j36nebznnswzwqoqlr6u

Design-Time Web Usability Evaluation with Guideliner

Jevgeni Marenkov, Tarmo Robal, Ahto Kalja
2018 Complex Systems Informatics and Modeling Quarterly  
The diversity of smartphones and tablet computers has become an integral part of modern life. An essential requirement for web application development is following web usability guidelines, while designing web user interface (UI). Even a minor change in UI could lead to usability problems. Empirical evaluation methods like interviews and questionnaires with user-tests and card sorting are effective in finding such problems. Nevertheless, there are multiple obstacles preventing the application
more » ... these methods especially for evaluating minor UI changes, for instance, due to the time and human-resources they require, and the amount of data to be processed. The purpose of this current publication is to present Guidelinera tool for implementation-time automatic evaluation of web UI conformance to predefined usability guidelines. The main contribution of the presented solution is enabling immediate cost-efficient and automated web UI evaluation that conforms to available and set standards.
doi:10.7250/csimq.2018-15.05 fatcat:2vxynu4ekjfbxekagllkzxiew4

Asynchronous Messaging for OSGi

Arne Koschel, Irina Astrova, Marc Schaaf, Volker Ahlers, Stella Gatziu Grivas, Ahto Kalja
2012 Journal of Computing and Information Technology  
Irina Astrova and Ahto Kalja's work was also supported by the Estonian Ministry of Education and Research target-financed research theme no. 0140007s12. Figure 1 . 1 Messaging.  ...  Acknowledgments Irina Astrova and Ahto Kalja's work was supported by the Estonian Centre of Excellence in Computer Science (EXCS) funded mainly by the European Regional Development Fund (ERDF).  ...  AHTO KALJA is a Professor of systems programming at Software Department of Institute of Cybernetics at Tallinn University of Technology, Tallinn, Estonia.  ... 
doi:10.2498/cit.1002091 fatcat:seg2tsc2c5bv7gzklasawzhzay

Applying User Profile Ontology for Mining Web Site Adaptation Recommendations

Tarmo Robal, Ahto Kalja
2007 Symposium on Advances in Databases and Information Systems  
The Internet consists of web sites that employ different kinds of structures as the backbone of their build-up. However, users are browsing the web according to its content, regardless of the structure. In this paper we discuss the possibilities of applying ontologies in exploring the web sites' structures and usage for producing viewing recommendations for the visitors. A special log system for capturing access data is introduced as well as techniques applied for data mining. Ontology of user
more » ... rofiles is constructed by exploiting the user locality model.
dblp:conf/adbis/RobalK07 fatcat:g5i2phvd6rfhxlsjbdinsdvcuy

Cloud-Enabled Scaling of Event Processing Applications

Irina Astrova, Arne Koschel, Ahto Kalja
unpublished
Irina Astrova's and Ahto Kalja's work was also supported by the Estonian Ministry of Education and Research target-financed research theme no. 0140007s12.  ...  ACKNOWLEDGMENT Irina Astrova's and Ahto Kalja's work was supported by the Estonian Centre of Excellence in Computer Science (EXCS) funded mainly by the European Regional Development Fund (ERDF).  ... 
fatcat:cl7pui3tczhkvjlie42fhuhqwq

Moving Hadoop to the cloud for big data analytics

Irina Astrova, Arne Koschel, Felix Heine, Ahto Kalja
2020
Acknowledgement Irina Astrova's and Ahto Kalja's work was supported by the Estonian Ministry of Education and Research institutional research grant IUT33-13.  ... 
doi:10.25968/opus-1555 fatcat:dxbtgqrgk5gilptv2oo55zgs6m

Evaluation of the Applicability of the OSGi Service Platform to Future In-Vehicle Embedded Systems

Irina Astrova, Ahto Kalja, Arne Koschel, Roman Roelofsen
unpublished
ACKNOWLEDGMENT Irina Astrova's and Ahto Kalja's work was supported by the Estonian Centre of Excellence in Computer Science (EXCS) funded mainly by the European Regional Development Fund (ERDF).  ... 
fatcat:2n652a4fgjfaxpqz4x2csrcm2y

Asynchronous Messaging for OSGi

Arne Koschel
2012 Proceedings of the ITI 2012 34th International Conference on INFORMATION TECHNOLOGY INTERFACES  
Irina Astrova and Ahto Kalja's work was also supported by the Estonian Ministry of Education and Research target-financed research theme no. 0140007s12. Figure 1 . 1 Messaging.  ...  Acknowledgments Irina Astrova and Ahto Kalja's work was supported by the Estonian Centre of Excellence in Computer Science (EXCS) funded mainly by the European Regional Development Fund (ERDF).  ...  AHTO KALJA is a Professor of systems programming at Software Department of Institute of Cybernetics at Tallinn University of Technology, Tallinn, Estonia.  ... 
doi:10.2498/iti.2012.0458 dblp:conf/iti/KoschelASAGK12 fatcat:tmcms3bzc5bt7ikbrma4vt6kma

A framework for OWL DL based Ontology Construction from Relational Database using Mapping and Semantic Rules

C. Ramathilagam, M. L. Valarmathi
2013 International Journal of Computer Applications  
Kalja, 2007, Rule based Transformation of SQL Relational Databases to OWL Ontologies, , World Academy of Science, Engineering and Technology [5] Quang Trinh, Ken Barker, Reda Alhajj, 2006, RDB2ONT : A  ...  Kalja, Nahum Korda 2007, Automatic Transformation of OWL Ontologies to SQL Relational Databases, IADIS European Conference on Data Mining [13] Raji Ghawi, Nadine Cullot, 2007, Database -to-Ontology mapping  ... 
doi:10.5120/13341-0776 fatcat:bv6xtulgjfdufgzeg5xt4xkyz4

Computing and Computer Science in the Soviet Baltic Region [chapter]

Enn Tyugu
2009 IFIP Advances in Information and Communication Technology  
Figure 3 . 3 Number of employees in the Institute of Cybernetics and EKTA Research in databases (Ain Isotamm, Anne Villems, Enn Tyugu, Ahto Kalja, Hele-Mai Haav). o Control theory and computer control  ... 
doi:10.1007/978-3-642-03757-3_3 fatcat:op5qlpqd3ne2bj67l6m5qho3ma

Pseudonymization Service for X-Road eGovernment Data Exchange Layer [chapter]

Jan Willemson
2011 Lecture Notes in Computer Science  
The author is grateful to Märt Laur and professor Ahto Kalja for their help in the process of preparing the manuscript.  ... 
doi:10.1007/978-3-642-22961-9_11 fatcat:ewekgxnj25di7po7f3o7ljehcq

A Secure and Scalable Infrastructure for Inter-Organizational Data Exchange and eGovernment Applications

Jan Willemson, Arne Ansper
2008 2008 Third International Conference on Availability, Reliability and Security  
The authors would also like to thank Ahto Kalja and Martin Undusk for valuable input to the paper.  ... 
doi:10.1109/ares.2008.90 dblp:conf/IEEEares/WillemsonA08 fatcat:7shnxdmolzbejbxvwhtlgafoza

TALLINNA TEHNIKAÜLIKOOLI PUBLIKATSIOONID 2016

Tallinna Raamatukogu
unpublished
., Kalja, A.  ...  Robal, T., Kalja, A.  ... 
fatcat:o6jk6jfy5vghxdlshtty2qccve

Leadership and Technology Management (LTM) the strategic management of technology in a consumer-driven environment [chapter]

Harry J. Murphy
1994 Lecture Notes in Computer Science  
TD-12 Science and Technology TD-12.1 [R] IT Innovation is the First Step on the Way to the Information Society Hannu Jaakkola; Pori School of Technology and Economics, Finland Ahto Kalja; Institute  ...  WB-09.3 [A] Key Success Factors of a Regional Software Process Improvement Programme Marion Lepasaar; Pori School of Technology and Economics, Finland Ahto Kalja; Tallinn Technical University, Finland  ... 
doi:10.1007/3-540-58476-5_142 fatcat:5rswny5kb5gwpjeppgtstuubee

TALLINNA TEHNIKAÜLIKOOLI PUBLIKATSIOONID 2015

Tallinna Raamatukogu
unpublished
., Kalja, A.  ...  Robal, T., Ojastu, D., Kalja, A., Jaakkola, H.  ... 
fatcat:p556mpv4orbjdgjfr27ihjqk3q
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