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» Hypercomputation: computing more than the Turing machine
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ICNSC
2007
IEEE
15 years 4 months ago
A New Anti-Spam Protocol Using CAPTCHA
— Today sending spams has turned to be a major problem in the Internet. It is so serious that more than 80% of the transferred emails are spams. As a result, various methods have...
Sajad Shirali-Shahreza, Ali Movaghar
CORR
2011
Springer
209views Education» more  CORR 2011»
14 years 1 months ago
I Don't Want to Think About it Now:Decision Theory With Costly Computation
Computation plays a major role in decision making. Even if an agent is willing to ascribe a probability to all states and a utility to all outcomes, and maximize expected utility,...
Joseph Y. Halpern, Rafael Pass
AML
2008
124views more  AML 2008»
14 years 9 months ago
The elementary computable functions over the real numbers: applying two new techniques
The basic motivation behind this work is to tie together various computational complexity classes, whether over different domains such as the naturals or the reals, or whether def...
Manuel Lameiras Campagnolo, Kerry Ojakian
DAM
1998
88views more  DAM 1998»
14 years 9 months ago
Neither Reading Few Bits Twice Nor Reading Illegally Helps Much
We first consider so-called (1,+s)-branching programs in which along every consistent path at most s variables are tested more than once. We prove that any such program computing...
Stasys Jukna, Alexander A. Razborov
90
Voted
COLT
2008
Springer
14 years 11 months ago
More Efficient Internal-Regret-Minimizing Algorithms
Standard no-internal-regret (NIR) algorithms compute a fixed point of a matrix, and hence typically require O(n3 ) run time per round of learning, where n is the dimensionality of...
Amy R. Greenwald, Zheng Li, Warren Schudy