| Application |
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| l | Let Xi=1 if trial i is
a failure, else 0 |
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| l | Let X = X1 +
… + Xt |
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| l | Then E[X] = t · FAIL(p) |
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| l | Chernoff says X within relative e
of E[X] |
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| with probability
1-exp(e2 t FAIL(p)/4) |
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| l | So choose t to cancel other terms |
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| » | “High
probability” t
= O(log n / e2FAIL(p)) |
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| » | Deviation by e with probability < 1 / n |
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