Hans-Joachim Lenz

Ilias Michalarias, Arkadiy Omelchenko, Hans-Joachim Lenz: FCLOS. Data Knowl. Eng. 68(2): 192-220 (2009)

Hans-Joachim Lenz, Bernhard Thalheim: A Formal Framework of Aggregation for the OLAP-OLTP Model. J. UCS 15(1): 273-303 (2009)

Ilias Michalarias, Hans-Joachim Lenz: Optimal Query Mapping in Mobile OLAP. ADBIS 2007: 250-266

Veit Köppen, Henner Graubitz, Hans-Knud Arndt, Hans-Joachim Lenz: A Procedure to Estimate Relations in a Balanced Scorecard. GfKl 2007: 363-371

Daniel Delic, Hans-Joachim Lenz: Non-Profit Web Portals - Usage Based Benchmarking for Success Evaluation. GfKl 2007: 561-568

Reinhold Decker, Hans-Joachim Lenz (Eds.): Advances in Data Analysis, Proceedings of the 30th Annual Conference of the Gesellschaft für Klassifikation e.V., Freie Universität Berlin, March 8-10, 2006. Studies in Classification, Data Analysis, and Knowledge Organization, Springer 2007, isbn 978-3-540-70980-0

Daniel Delic, Hans-Joachim Lenz: Towards Success Evaluation: Multiple-Criteria Analysis of Benefits and Costs for Non-Profit Web Portals. AMCIS 2006: 65

Veit Köppen, Marina Allgeier, Hans-Joachim Lenz: Balanced Scorecard Simulator - A Tool for Stochastic Business Figures. GfKl 2006: 457-464

Hans-Joachim Lenz, Veit Köppen, Roland M. Müller: Edits - Data Cleansing at the Data Entry to assert semantic Consistency of metric Data. SSDBM 2006: 235-240

Roland M. Müller, Stephanie Haiduk, Nadine Heertsch, Hans-Joachim Lenz, Myra Spiliopoulou: Experimental Investigation of the Effects of Different Market Mechanisms for Electronic Knowledge Markets. ECIS 2005: 1115-1126

Roland M. Müller, Myra Spiliopoulou, Hans-Joachim Lenz: The Influence of Incentives and Culture on Knowledge Sharing. HICSS 2005

Ilias Michalarias, Hans-Joachim Lenz: Dissemination of Multidimensional Data Using Broadcast Clusters. ICDCIT 2005: 573-584

Hans-Joachim Lenz, Bernhard Thalheim: OLAP Schemata for Correct Applications. TEAA 2005: 99-113

Hans-Joachim Lenz, Panos Vassiliadis, Manfred A. Jeusfeld, Martin Staudt: Report on the 5^th international workshop on the design and management of data warehouses (DMDW'03). SIGMOD Record 32(4): 113-116 (2003)

Hans-Joachim Lenz: Entity Level Data Integration by Statistical Methods. SSDBM 2003: 3-4

Hans-Joachim Lenz, Panos Vassiliadis, Manfred A. Jeusfeld, Martin Staudt (Eds.): Design and Management of Data Warehouses 2003, Proceedings of the 5th Intl. Workshop DMDW'2003, Berlin, Germany, September 8, 2003. CEUR Workshop Proceedings 77, CEUR-WS.org 2003

Michael R. Berthold, Hans-Joachim Lenz, Elizabeth Bradley, Rudolf Kruse, Christian Borgelt (Eds.): Advances in Intelligent Data Analysis V, 5th International Symposium on Intelligent Data Analysis, IDA 2003, Berlin, Germany, August 28-30, 2003, Proceedings. Lecture Notes in Computer Science 2810, Springer 2003, isbn 3-540-40813-4

Roland M. Müller, Myra Spiliopoulou, Hans-Joachim Lenz: Expertenrat in E-Marketplaces. HMD - Praxis Wirtschaftsinform. 223 (2002)

Marcus Jürgens, Hans-Joachim Lenz: Tree Based Indexes Versus Bitmap Indexes: A Performance Study. Int. J. Cooperative Inf. Syst. 10(3): 355-376 (2001)

Hans-Joachim Lenz, Bernhard Thalheim: OLAP Databases and Aggregation Functions. SSDBM 2001: 91-100

Markus Schaal, Hans-Joachim Lenz: Best Time and Content for Delay Notification. TIME 2001: 75-80

Mattis Neiling, Hans-Joachim Lenz: Data Integration by means of Object Identification in Information Systems. ECIS 2000: 252-258

Oliver Günther, Hans-Joachim Lenz (Eds.): Proceedings of the 12th International Conference on Scientific and Statistical Database Management, Berlin, Germany, July 26-28, 2000. IEEE Computer Society 2000, isbn 0-7695-0686-0

Marcus Jürgens, Hans-Joachim Lenz: Tree Based Indexes vs. Bitmap Indexes - a Performance Study. DMDW 1999: 1

Jörg Caumanns, Hans-Joachim Lenz: Hypermedia Fusion - A Document Generator for the World Wide Web. ICMCS, Vol. 2 1999: 892-896

Marcus Jürgens, Hans-Joachim Lenz: PISA: Performance Models for Index Structures with and without Aggregated Data. SSDBM 1999: 78-87

Marcus Jürgens, Hans-Joachim Lenz: The R_a^*-tree: An improved R-tree with Materialized Data for Supporting Range Queries on OLAP-Data. DEXA Workshop 1998: 186-191

St. De Francisci, Oliver Günther, Hans-Joachim Lenz, Maurizio Lenzerini, Arie Shoshani: OLAP and Data Warehousing in Statistical Databases (Panel). SSDBM 1998: 167

Hans-Joachim Lenz, Arie Shoshani: Summarizability in OLAP and Statistical Data Bases. SSDBM 1997: 132-143

Hans-Joachim Lenz: The Conceptual Schema and External Schemata of Metadatabases. SSDBM 1994: 160-165

Hans-Joachim Lenz: Performance Evaluation of Batch Inspection Schemes using Simulation on a Microcomputer. IMACS European Simulation Meeting 1984: 119-122

Hans-Joachim Lenz: A Test Bench for Batch Inspection Systems. ESC 1983: 201-206