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Christian Beilken

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Publications by Christian Beilken (bibliography)

2003

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Spenke, Michael and Beilken, Christian (2003): Visualization and Analysis of Formula One Racing Results with InfoZoom - the Demo. In: Proceedings of IFIP INTERACT03: Human-Computer Interaction 2003, Zurich, Switzerland. p. 1113.

1996

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Spenke, Michael, Beilken, Christian and Berlage, Thomas (1996): FOCUS: The Interactive Table for Product Comparison and Selection. In: Kurlander, David, Brown, Marc and Rao, Ramana (eds.) Proceedings of the 9th annual ACM symposium on User interface software and technology November 06 - 08, 1996, Seattle, Washington, United States. pp. 41-50.

“FOCUS, the Feature-Oriented Catalog USer interface, is an interactive table viewer for a common kind of table, namely the object-attribute table, also called cases-by-attribute table or relational table. Typical examples of these tables are the Roll Calls in BYTE where the features and test results of a family of hardware or software products are compared. FOCUS supports data exploration by a combination of a focus+context or fisheye technique, a hierarchical outliner for large attribute sets, and a general and easy-to-use dynamic query mechanism where the user simply clicks on desired values found in the table. A PC/Windows implementation of FOCUS is publicly available (http://www.gmd.de/fit/projects/focus.html). It is suited for tables with up to a few hundred rows and columns, which are typically stored and maintained by spreadsheet applications. Since we use a simple data format, existing tables can be easily inspected with FOCUS. With the rapidly increasing public interest in on-line services like the World Wide Web we expect a growing demand for access to on-line catalogues and databases. FOCUS satisfies this demand, allowing formulation of simple database queries with an interface as easy to use as a Web browser.”

1989

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Spenke, Michael and Beilken, Christian (1989): A Spreadsheet Interface for Logic Programming. In: Bice, Ken and Lewis, Clayton H. (eds.) Proceedings of the ACM CHI 89 Human Factors in Computing Systems Conference April 30 - June 4, 1989, Austin, Texas. pp. 75-80.

“We present PERPLEX, a programming environment intended for the end-user. In its design, the concepts of logic programming and spreadsheets are combined. Thus, on the one hand, logic programming becomes an interactive, incremental task where the user gets direct visual feedback, on the other hand, functionality and scope of a conventional spreadsheet program are considerably extended. In order to perform calculations and queries, constraints are imposed on the contents of the spreadsheet cells. New predicates can be defined using a programming-by-example technique: Rules are extracted from the user's solutions for example problems. Thus, concrete intermediate results take over the role of abstract logic variables in the programming process. PERPLEX has been successfully implemented on a Symbolics Lisp Machine.”

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