Tapio Niemi

According to our database, Tapio Niemi authored at least 50 papers between 1998 and 2025.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2025

Automatic (near-) duplicate content document detection in a cancer registry.

Tapio Niemi, Jean Pierre Ghobril, Gautier Defossez, Simon Germann, Eloïse Martin, Jean-Luc Bulliard

Int. J. Medical Informatics, 2025

2021

Technical Note: Mean Lead-Time as a Real-Time Key Performance Indicator.

Tapio Niemi, Olivier Gallay, Ari-Pekka Hameri

Decis. Sci., 2021

2020

Effect of light activation on chemical gas sensors based on aligned nanowires.

Camilla Baratto, Viktoria Golovanova, Guido Faglia, Thi Thanh Le Dang, Hanna Hakola, Tapio Niemi, Nikolai Tkachenko, Bohgan Nazarchurk, Vyacheslav Golovanov

Proceedings of the 2020 IEEE Sensors, Rotterdam, The Netherlands, October 25-28, 2020, 2020

2019

Analyzing the power consumption behavior of a large scale data center.

Kashif Nizam Khan, Sanja Scepanovic, Tapio Niemi, Jukka K. Nurminen, Sebastian von Alfthan, Olli-Pekka Lehto

SICS Softw.-Intensive Cyber Phys. Syst., 2019

Detecting measurement issues in SQL arithmetic expressions and aggregations.

Peter Thanisch, Tapio Niemi, Jyrki Nummenmaa, Marko Niinimäki

Data Knowl. Eng., 2019

2018

RAPL in Action: Experiences in Using RAPL for Power Measurements.

Kashif Nizam Khan, Mikael Hirki, Tapio Niemi, Jukka K. Nurminen, Zhonghong Ou

ACM Trans. Model. Perform. Evaluation Comput. Syst., 2018

Towards Green Big Data at CERN.

Tapio Niemi, Jukka K. Nurminen, Juha-Matti Liukkonen, Ari-Pekka Hameri

Future Gener. Comput. Syst., 2018

2017

Energy efficiency of dynamic management of virtual cluster with heterogeneous hardware.

Jukka Kommeri, Tapio Niemi, Jukka K. Nurminen

J. Supercomput., 2017

A practical evaluation of a network expansion mechanism in an openstack cloud federation.

Maël Kimmerlin, Max Plauth, Seppo Heikkilä, Tapio Niemi

Proceedings of the 6th IEEE International Conference on Cloud Networking, 2017

2016

How much power does your server consume? Estimating wall socket power using RAPL measurements.

Kashif Nizam Khan, Zhonghong Ou, Mikael Hirki, Jukka K. Nurminen, Tapio Niemi

Comput. Sci. Res. Dev., 2016

Energy efficiency of large scale graph processing platforms.

Kashif Nizam Khan, Mohammad Ashraful Hoque, Tapio Niemi, Zhonghong Ou, Jukka K. Nurminen

Proceedings of the 2016 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2016 ACM International Symposium on Wearable Computers, 2016

2015

Computing Heaters - An Energy-Efficient Way to Provide Computing Services.

Jukka K. Nurminen, Johan Strandman, Tapio Niemi

Proceedings of the 15th IEEE/ACM International Symposium on Cluster, 2015

Energy Profiling Using IgProf.

Kashif Nizam Khan, Filip Nyback, Zhonghong Ou, Jukka K. Nurminen, Tapio Niemi, Giulio Eulisse, Peter Elmer, David Abdurachmanov

Proceedings of the 15th IEEE/ACM International Symposium on Cluster, 2015

2014

Energy Efficiency of a Web and Database Server System: Configuration and Bursting.

Jukka Kommeri, Felipe Abaunza, Marko Niinimäki, Peter Thanisch, Tapio Niemi

Int. J. Green Comput., 2014

Detecting summarizability in OLAP.

Tapio Niemi, Marko Niinimäki, Peter Thanisch, Jyrki Nummenmaa

Data Knowl. Eng., 2014

Techniques and tools for measuring energy efficiency of scientific software applications.

David Abdurachmanov, Peter Elmer, Giulio Eulisse, Robert Knight, Tapio Niemi, Jukka K. Nurminen, Filip Nyback, Goncalo Pestana, Zhonghong Ou, Kashif Nizam Khan

CoRR, 2014

Games and energy: profiling power usage during play.

Jussi-Matti Salmela, Peter Thanisch, Olli Sotamaa, Tapio Niemi

Proceedings of the 18th International Academic MindTrek Conference: Media Business, 2014

2013

Incompleteness in Conceptual Data Modelling.

Peter Thanisch, Tapio Niemi, Jyrki Nummenmaa, Zheying Zhang, Marko Niinimäki, Pertti Saariluoma

Proceedings of the Information and Software Technologies - 19th International Conference, 2013

Cell-at-a-Time Approach to Lazy Evaluation of Dimensional Aggregations.

Peter Thanisch, Jyrki Nummenmaa, Tapio Niemi, Marko Niinimäki

Proceedings of the Data Warehousing and Knowledge Discovery, 2013

2012

Memory-based scheduling of scientific computing clusters.

Tapio Niemi, Ari-Pekka Hameri

J. Supercomput., 2012

2011

Using the Entity-Attribute-Value Model for OLAP Cube Construction.

Peter Thanisch, Tapio Niemi, Marko Niinimäki, Jyrki Nummenmaa

Proceedings of the Perspectives in Business Informatics Research, 2011

Timely Report Production from WWW Data Sources.

Marko Niinimäki, Tapio Niemi, Stephen Martin, Jyrki Nummenmaa, Peter Thanisch

Proceedings of the Workshops on Business Informatics Research, 2011

2010

Ontologies and summarizability in OLAP.

Tapio Niemi, Marko Niinimäki

Proceedings of the 2010 ACM Symposium on Applied Computing (SAC), 2010

2009

An ETL Process for OLAP Using RDF/OWL Ontologies.

Marko Niinimäki, Tapio Niemi

J. Data Semant., 2009

Server-Based Computing Solution Based on Open Source Software.

Tapio Niemi, Miika Tuisku, Ari-Pekka Hameri, Tamara Curtin

Inf. Syst. Manag., 2009

Improving Energy-Efficiency of Grid Computing Clusters.

Tapio Niemi, Jukka Kommeri, Kalle Happonen, Jukka Klem, Ari-Pekka Hameri

Proceedings of the Advances in Grid and Pervasive Computing, 4th International Conference, 2009

2008

How Grids are Perceived in Healthcare and the Public Service Sector.

Mikko Juhani Pitkänen, Xin Zhou, Miika Tuisku, Tapio Niemi, Ville Ryynänen, Henning Müller

Proceedings of the Global Healthgrid: e-Science Meets Biomedical Informatics, 2008

2007

Ontologies with Semantic Web/Grid in Data Integration for OLAP.

Tapio Niemi, Santtu Toivonen, Marko Niinimäki, Jyrki Nummenmaa

Int. J. Semantic Web Inf. Syst., 2007

2006

Selective growth experiments on gallium arsenide (100) surfaces patterned using UV-nanoimprint lithography.

Antti Tukiainen, J. Viheriälä, Tapio Niemi, T. Rytkönen, J. Kontio, M. Pessa

Microelectron. J., 2006

Erasure Codes for Increasing the Availability of Grid Data Storage.

Mikko Pitkänen, Rim Moussa, D. Martin Swany, Tapio Niemi

Proceedings of the Advanced International Conference on Telecommunications and International Conference on Internet and Web Applications and Services (AICT/ICIW 2006), 2006

2005

Modelling, searching and utilising Grid resources and services.

Marko Niinimäki, Santtu Toivonen, Tapio Niemi

Proceedings of the Information Modelling and Knowledge Bases XVII, 2005

Description Logics, Data Modelling and Relational Dependencies.

Tapio Niemi, Marko Niinimäki, Santtu Toivonen

Proceedings of the Information Modelling and Knowledge Bases XVII, 2005

2004

Virtual Organizations and Database Access - A Case Study.

Mikko Pitkänen, Marko Niinimäki, John White, Tapio Niemi

Proceedings of the ICEIS 2004, 2004

Gridblocks - Web Portal and Client for Distributed Computing.

Juho Karppinen, Marko Niinimäki, John White, Tapio Niemi

Proceedings of the ICEIS 2004, 2004

A Framework for On-Demand Integration of Enterprise Data Sources.

Matti Heikkurinen, Tapio Niemi, Marko Niinimäki, Vesa Sivunen

Proceedings of the ICEIS 2004, 2004

Using Virtual Organizations Membership System with EDG's Grid Security and Database Access.

Marko Niinimäki, John White, Wim Som de Cerff, Joni Hahkala, Tapio Niemi, Mikko Pitkänen

Proceedings of the 15th International Workshop on Database and Expert Systems Applications (DEXA 2004), with CD-ROM, 30 August, 2004

2003

Normalising OLAP cubes for controlling sparsity.

Tapio Niemi, Jyrki Nummenmaa, Peter Thanisch

Data Knowl. Eng., 2003

Integrating Distributed Heterogenous Databases and Distributed Grid Computing.

Tapio Niemi, Marko Niinimäki, Vesa Sivunen

Proceedings of the ICEIS 2003, 2003

Document Similarities in Web Based Collaborative Environments.

Michael Gindonis, Tapio Niemi, Marko Niinimäki

Proceedings of the Information Modelling and Knowledge Bases XV, 2003

Applying Grid Technologies to XML Based OLAP Cube Construction.

Tapio Niemi, Marko Niinimäki, Jyrki Nummenmaa, Peter Thanisch

Proceedings of the Design and Management of Data Warehouses 2003, 2003

2002

Constructing an OLAP cube from distributed XML data.

Tapio Niemi, Marko Niinimäki, Jyrki Nummenmaa, Peter Thanisch

Proceedings of the DOLAP 2002, 2002

2001

Methods for Logical OLAP Design.

Tapio Niemi

PhD thesis, 2001

Scalability of a Metropolitan Bidirectional Multifiber WDM-Ring Network.

Kalle Ylä-Jarkko, Matti Leppihalme, Simo Tammela, Tapio Niemi, Ari Tervonen

Photonic Netw. Commun., 2001

Constructing OLAP Cubes Based on Queries.

Tapio Niemi, Jyrki Nummenmaa, Peter Thanisch

Proceedings of the 4th ACM International Workshop on Data Warehousing and OLAP (DOLAP 2001), 2001

Logical Multidimensional Database Design for Ragged and Unbalanced Aggregation.

Tapio Niemi, Jyrki Nummenmaa, Peter Thanisch

Proceedings of the 3rd Intl. Workshop on Design and Management of Data Warehouses, 2001

2000

A Query Method Based on Intensional Concept Definition.

Tapio Niemi, Jyrki Nummenmaa

Proceedings of the Information Modelling and Knowledge Bases XII: Tenth European-Japanese Conference on Information Modelling and Knowledge Bases, 2000

Functional Dependencies in Controlling Sparsity of OLAP Cubes.

Tapio Niemi, Jyrki Nummenmaa, Peter Thanisch

Proceedings of the Data Warehousing and Knowledge Discovery, 2000

1999

Searching neural network structures with L systems and genetic algorithms.

Isto Aho, Harri Kemppainen, Kai Koskimies, Erkki Mäkinen, Tapio Niemi

Int. J. Comput. Math., 1999

New approaches to Intensional Concept Theory.

Tapio Niemi

Proceedings of the Information Modelling and Knowledge Bases XI: 9th European-Japanese Conferences on Information Modelling and Knowledge Bases, 1999

1998

Transforming Concept D Schema into Relational Database Schema.

Tapio Niemi

Proceedings of the Information Modelling and Knowledge Bases X: 8th European-Japanese Conferences on Information Modelling and Knowledge Bases, 1998