منابع مشابه
Non-uniformity - Some Background
The conditional result we saw last time does much more than that. If we have a language in the uniform class E not in the non-uniform class SIZE(s(n)) then a PRG exists. I.e., there is a way to systematically replace random bits with pseudorandom bits such that no BPP algorithm will (substantially) notice the difference. Thus, not only it shows that all languages in BPP are in fact in P (or wha...
متن کاملRandomness and non-uniformity
In the first part, we introduce randomized algorithms as a new notion of efficient algorithms for decision problems. We classify randomized algorithms according to their error probabilities, and define appropriate complexity classes. (RP, coRP, ZPP, BPP, PP). We discuss which classes are realistic proposals for design of probabilistic algorithms. We cover the implementation of randomized algori...
متن کاملAnother look at non-uniformity
We argue that it is unnatural and undesirable to use the non-uniform model of complexity for practice-oriented security reductions in cryptography.
متن کاملRandom Oracles and Non-Uniformity
We revisit security proofs for various cryptographic primitives in the auxiliary-input randomoracle model (AI-ROM), in which an attacker A can compute arbitrary S bits of leakage about the random oracle O before attacking the system and then use additional T oracle queries to O during the attack. This model has natural applications in settings where traditional randomoracle proofs are not usefu...
متن کاملNon-expected Utility Theory
The expected utility/subjective probability model of risk preferences and beliefs has long been the preeminent model of individual choice under conditions of uncertainty. It exhibits a tremendous flexibility in representing aspects of attitudes toward risk, has a well-developed analytical structure, and has been applied to the analysis of gambling, games of strategy, incomplete information, ins...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 1977
ISSN: 0252-9211
DOI: 10.1017/s0252921100069505