7 citations · 16 across the 7 of their papers we have counts for
8 papers
Aggregating over Dominated Points by Sorting, Scanning, Zip and Flat Maps
Jacek Sroka, Jerzy Tyszkiewicz
Prefix aggregation operation (also called scan), and its particular case, prefix summation, is an important parallel primitive and enjoys a lot of attention in the research literat…
The Power of Spreadsheet Computations
Jerzy Tyszkiewicz
We investigate the expressive power of spreadsheets. We consider spreadsheets which contain only formulas, and assume that they are small templates, which can be filled to a larger…
Translating Relational Queries into Spreadsheets
Jacek Sroka, Adrian Panasiuk, Krzysztof Stencel +1
Spreadsheets are among the most commonly used applications for data management and analysis. Perhaps they are even among the most widely used computer applications of all kinds. Th…
User Defined Spreadsheet Functions in Excel
Jerzy Tyszkiewicz, Dermot Balson
Creating user defined functions (UDFs) is a powerful method to improve the quality of computer applications, in particular spreadsheets. However, the only direct way to use UDFs in…
The semijoin algebra and the guarded fragment
Dirk Leinders, Jerzy Tyszkiewicz, Jan Van den Bussche
The semijoin algebra is the variant of the relational algebra obtained by replacing the join operator by the semijoin operator. We discuss some interesting connections between the…
On the expressive power of semijoin queries
Dirk Leinders, Jerzy Tyszkiewicz, Jan Van den Bussche
The semijoin algebra is the variant of the relational algebra obtained by replacing the join operator by the semijoin operator. We provide an Ehrenfeucht-Fraissé game, characterizi…