 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
l |
Flip a coin for
each edge, test graph
|
|
|
l |
k
failures in t trials Ž
FAIL(p) » k/t
|
|
|
l |
E[k/t] = FAIL(p)
|
|
|
l |
How many trials
needed for confidence?
|
|
|
» |
“bad luck” on
trials can yield bad estimate
|
|
|
|
» |
clearly need at
least 1/FAIL(p)
|
|
|
l |
Chernoff bound: O*(1/e2FAIL(p)) suffice
|
|
|
|
|
to give probable
accuracy within e
|
|
|
|
» |
Time O*(m/e2FAIL(p))
|
|
|
|