Hans-Joachim Lenz

Publication Activity (10 Years)

Years Active: 1975-2021
Publications (10 Years): 7

Top Topics

Data Mining Techniques

Fraud Detection

Dynamic Bayesian Networks

Top Venues

Inform. Spektrum

ICISSP (Revised Selected Papers)

Publications

Hans-Joachim Lenz
Achtung.Datentrickserei. Inform. Spektrum 44 (3) (2021)
Hans-Joachim Lenz
Achtung.Datentrickserei. Inform. Spektrum 44 (4) (2021)
Hans-Joachim Lenz
Datentrickserei im Taxigewerbe - von Abzocke bis Steuerbetrug. Inform. Spektrum 43 (1) (2020)
Hans-Joachim Lenz
Achtung.Datentrickserei. Inform. Spektrum 42 (2) (2019)
Thomas Schwarz, Hans-Joachim Lenz, Wilhelm Dominik
Long-Term Projections for Commodity Prices - The Crude Oil Price Using Dynamic Bayesian Networks. OR (2017)
Hans-Joachim Lenz
Tax Fraud and Investigation: A Framework for a Knowledge Based Methodology. ICISSP (Revised Selected Papers) (2016)
Hans-Joachim Lenz
Tax Fraud and Investigation Procedures - Everybody, Every Where, Every Time. ICISSP (2016)
Hans-Joachim Lenz
Data Fraud Detection: A First General Perspective. ICEIS (Revised Selected Papers) (2014)
Hans-Joachim Lenz
Data Fraud Detection. ICEIS (1) (2014)
Ilias Michalarias, Arkadiy Omelchenko, Hans-Joachim Lenz
FCLOS: A client-server architecture for mobile OLAP. Data Knowl. Eng. 68 (2) (2009)
Hans-Joachim Lenz, Bernhard Thalheim
A Formal Framework of Aggregation for the OLAP-OLTP Model. J. Univers. Comput. Sci. 15 (1) (2009)
Hans-Joachim Lenz
Spreadsheet Computation with imprecise and uncertain Data. Uncertainty Management in Information Systems (2008)
Hidir Aras, Norbert Fuhr, Seung-won Hwang, Ander de Keijzer, Friederike Klan, Hans-Joachim Lenz, Tom Matthé, Heinz Schweppe, Mirco Stern, Guy De Tré
08421 Working Group: Explanation. Uncertainty Management in Information Systems (2008)
Myra Spiliopoulou, Maurice van Keulen, Hans-Joachim Lenz, Jef Wijsen, Matthias Renz, Rudolf Kruse, Mirco Stern
08421 Working Group: Imprecision, Diversity and Uncertainty: Disentangling Threads in Uncertainty Management. Uncertainty Management in Information Systems (2008)
Christoph Koch, Peter J. Haas, Hans-Joachim Lenz, Dan Olteanu, Christopher Ré, Maurice van Keulen, Jeff Z. Pan
08421 Working Group: Report of the Probabilistic Databases Benchmarking. Uncertainty Management in Information Systems (2008)
Daniel Delic, Hans-Joachim Lenz
Non-Profit Web Portals - Usage Based Benchmarking for Success Evaluation. GfKl (2007)
Ilias Michalarias, Hans-Joachim Lenz
Optimal Query Mapping in Mobile OLAP. ADBIS (2007)
Veit Köppen, Henner Graubitz, Hans-Knud Arndt, Hans-Joachim Lenz
A Procedure to Estimate Relations in a Balanced Scorecard. GfKl (2007)
Hans-Joachim Lenz, Veit Köppen, Roland M. Müller
Edits - Data Cleansing at the Data Entry to assert semantic Consistency of metric Data. SSDBM (2006)
Daniel Delic, Hans-Joachim Lenz
Towards Success Evaluation: Multiple-Criteria Analysis of Benefits and Costs for Non-Profit Web Portals. AMCIS (2006)
Veit Köppen, Marina Allgeier, Hans-Joachim Lenz
Balanced Scorecard Simulator - A Tool for Stochastic Business Figures. GfKl (2006)
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)
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)
Hans-Joachim Lenz, Bernhard Thalheim
OLAP Schemata for Correct Applications. TEAA (2005)
Hans-Joachim Lenz, Panos Vassiliadis, Manfred A. Jeusfeld, Martin Staudt
international workshop on the design and management of data warehouses (DMDW'03). SIGMOD Rec. 32 (4) (2003)
Hans-Joachim Lenz
Entity Level Data Integration by Statistical Methods. SSDBM (2003)
Roland M. Müller, Myra Spiliopoulou, Hans-Joachim Lenz
Expertenrat in E-Marketplaces. HMD Prax. Wirtsch. 223 (2002)
Daniel Delic, Hans-Joachim Lenz, Mattis Neiling
Rough Sets and Association Rules - Which is Efficient? COMPSTAT (2002)
Marcus Jürgens, Hans-Joachim Lenz
Tree Based Indexes Versus Bitmap Indexes: A Performance Study. Int. J. Cooperative Inf. Syst. 10 (3) (2001)
Markus Schaal, Hans-Joachim Lenz
Best Time and Content for Delay Notification. TIME (2001)
Hans-Joachim Lenz, Bernhard Thalheim
OLAP Databases and Aggregation Functions. SSDBM (2001)
Mattis Neiling, Hans-Joachim Lenz
Data Integration by means of Object Identification in Information Systems. ECIS (2000)
Marcus Jürgens, Hans-Joachim Lenz
Discussion on the paper by Friedman and Fisher. Stat. Comput. 9 (2) (1999)
Marcus Jürgens, Hans-Joachim Lenz
PISA: Performance Models for Index Structures with and without Aggregated Data. SSDBM (1999)
Marcus Jürgens, Hans-Joachim Lenz
Tree Based Indexes vs. Bitmap Indexes - a Performance Study. DMDW (1999)
Jörg Caumanns, Hans-Joachim Lenz
Hypermedia Fusion - A Document Generator for the World Wide Web. ICMCS, Vol. 2 (1999)
Marcus Jürgens, Hans-Joachim Lenz
-tree: An improved R-tree with Materialized Data for Supporting Range Queries on OLAP-Data. DEXA Workshop (1998)
St. De Francisci, Oliver Günther, Hans-Joachim Lenz, Maurizio Lenzerini, Arie Shoshani
OLAP and Data Warehousing in Statistical Databases (Panel). SSDBM (1998)
Hans-Joachim Lenz, Arie Shoshani
Summarizability in OLAP and Statistical Data Bases. SSDBM (1997)
Hans-Joachim Lenz
The Conceptual Schema and External Schemata of Metadatabases. SSDBM (1994)
Hans-Joachim Lenz
Performance Evaluation of Batch Inspection Schemes using Simulation on a Microcomputer. IMACS European Simulation Meeting (1984)
Hans-Joachim Lenz
A Test Bench for Batch Inspection Systems. ESC (1983)
Hans-Joachim Lenz, R. Hujer, H. Streim, R. Weber, R. K. Huber, U. Reimers, Th. Eisele, Helmut Schellhaas, Dietrich Ohse, Siegfried Schaible, H. Schneeweiß
Buchbesprechungen. Z. Oper. Research 23 (3) (1979)
Hans-Joachim Lenz, Heiner Müller-Merbach, J. Kloock, K. H. Limmer, Dietrich Ohse, H.-I. Zimmermann, H. Wildermann
Buchbesprechungen. Z. Oper. Research 22 (1) (1978)
Wei Ping Loh, Karl Inderfurth, M. Hollinger, Peter Hammann, Hermann Meyer zu Selhausen, H. Dellwing, Helmuth Späth, Hans-Joachim Lenz
Buchbesprechungen. Math. Methods Oper. Res. 20 (4) (1976)
K. Glashoff, P. Cerwenka, G. Gallus, R. Giloth, Wolfgang Eichhorn, Gernot Waschek, Hans-Joachim Lenz
Buchbesprechungen. Z. Oper. Research 19 (2) (1975)