作者: U. Vazirani
DOI: 10.1145/28395.28413
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摘要: Randomness is an important computational resource, and has found application in such diverse tasks as combinatorial algorithms, synchronization deadlock resolution protocols, encrypting data cryptographic protocols. Blum [Bl] pointed out the fundamental fact that whereas all these applications of randomness assume a source independent, unbiased bits, available physical sources (such zener diodes) suffer seriously from problems correlation. A general