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DBPL
1995
Springer
106views Database» more  DBPL 1995»
15 years 1 months ago
On Impossibility of Decremental Recomputation of Recursive Queries in Relational Calculus and SQL
We study the problem of maintaining recursively-de ned views, such as the transitive closure of a relation, in traditional relational languages that do not have recursion mechanis...
Guozhu Dong, Leonid Libkin, Limsoon Wong
SIGGRAPH
1995
ACM
15 years 1 months ago
Artistic screening
Artistic screening is a new image reproduction technique incorporatingfreelycreatedartisticscreenelementsforgeneratinghalftones. Fixed predefined dot contours associated with giv...
Victor Ostromoukhov, Roger D. Hersch
80
Voted
CCS
2009
ACM
15 years 25 days ago
Filter-resistant code injection on ARM
Code injections attacks are one of the most powerful and important classes of attacks on software. In such attacks, the attacker sends malicious input to a software application, w...
Yves Younan, Pieter Philippaerts, Frank Piessens, ...
AAAI
2008
14 years 12 months ago
Using a Geometric-Based Sketch Recognition Approach to Sketch Chinese Radicals
Unlike English, where unfamiliar words can be queried for its meaning by typing out its letters, the analogous operation in Chinese is far from trivial due to the nature of its wr...
Paul Taele, Tracy Hammond
CHI
2005
ACM
14 years 11 months ago
Designing human friendly human interaction proofs (HIPs)
HIPs, or Human Interactive Proofs, are challenges meant to be easily solved by humans, while remaining too hard to be economically solved by computers. HIPs are increasingly used ...
Kumar Chellapilla, Kevin Larson, Patrice Y. Simard...