The paper presents a brief survey of the fight between spammers and antispam software developers, and also describes new approaches to spam filtering. In the first two sections we...
Abstract. We answer a question asked by Hajdu and Tengely: The only arithmetic progression in coprime integers of the form (a2 , b2 , c2 , d5 ) is (1, 1, 1, 1). For the proof, we ļ...
Coverage is a means to quantify the quality of a system speciļ¬cation, and is frequently applied to assess progress in system validation. Coverage is a standard measure in testin...
We show how to partition data structures representable by directed acyclic graphs, i.e. rooted trees, to allow for eļ¬cient complex operations, which lie beyond inserts, deletes ...
Combinatorial optimization problems expressed as Boolean constraint satisfaction problems (BCSPs) arise in several contexts, ranging from the classical unate set-packing problems ...