kala.fior
22.02.10, 23:00
cytat o algorytmach losowych:
" RABIN: I would say the following: The use in the Ethernet protocol is in
some sense like the use in Byzantine agreement. In Byzantine agreement, the
parties want to reach agreement against improper or malicious opponents. In
the Ethernet protocol, the participants want to avoid clashes, conflicts.
That’s somewhat similar. I don't know enough about genetic algorithms, but
they are of the same nature as the general randomized algorithms. I must admit
that after many years of work in this area, the efficacy of randomness for so
many algorithmic problems is absolutely mysterious to me. It is efficient, it
works; but why and how is absolutely mysterious.
It is also mysterious in another way because we cannot really prove that any
process, even let’s say radioactive decay, is truly random. Einstein rejected
the basic tenets of Quantum Theory and said that God does not play dice with
the universe. Randomized algorithms, in their pure form, must use a physical
source of randomness. So it is cooperation between us as computer scientists
and nature as a source of randomness. This is really quite unique and touches
on deep questions in physics and philosophy."
Co ma na myśli MR mówiąc ze nie da się udowodnić ze proces jest losowy? Czy ma
na myśli badanie rezultatów takich procesów czy przewidywanie zachowania w
przyszłości?
