Abstract. Starting with Karr's structural theorem for summation --the discrete version of Liouville's structural theorem for integration-- we work out crucial properties ...
In this article we present a refined summation theory based on Karr's difference field approach. The resulting algorithms find sum representations with optimal nested depth. ...
aint on disclosure risk. Underlying abstractions -- primarily associated with the query space, as well as released and unreleasable sub-tables and frontiers, computational algorith...
Adrian Dobra, Alan F. Karr, Ashish P. Sanil, Steph...
Objective To measure the time spent authoring and viewing documentation and to study patterns of usage in healthcare practice. Design Audit logs for an electronic health record we...
George Hripcsak, David K. Vawdrey, Matthew R. Fred...
We provide a new algorithm for indefinite nested summation which is applicable to summands involving unspecified sequences x(n). More than that, we show how to extend Karr's ...