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» Some Computational Problems Related to Pseudo-intents
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COMPUTING
1998
69views more  COMPUTING 1998»
14 years 9 months ago
Multilevel Norms for H-1/2
We give some estimates related to nite element multilevel splittings and Sobolev norms of negative order. Basically, results for the positive order case are carried over by dualit...
P. Oswald
VLDB
1987
ACM
108views Database» more  VLDB 1987»
15 years 1 months ago
Translating and Optimizing SQL Queries Having Aggregates
is at least ae powerful as SQL. Two well known relational query languages that have a sound theoretical foundation are relational algebra and relational calculus. As SQL is more cl...
Günter von Bültzingsloewen
TCS
2008
14 years 9 months ago
Itemset frequency satisfiability: Complexity and axiomatization
Computing frequent itemsets is one of the most prominent problems in data mining. We study the following related problem, called FREQSAT, in depth: given some itemset-interval pai...
Toon Calders
CCA
2009
Springer
15 years 4 months ago
Curves That Must Be Retraced
We exhibit a polynomial time computable plane curve Γ that has finite length, does not intersect itself, and is smooth except at one endpoint, but has the following property. For...
Xiaoyang Gu, Jack H. Lutz, Elvira Mayordomo
TAMODIA
2007
14 years 10 months ago
Exploring Usability Needs by Human-Computer Interaction Patterns
Abstract. Covering quality aspects such as usability through the software development life cycle is challenging. These “-ilities” are generally difficult to grasp and usually ...
Markus Specker, Ina Wentzlaff