Created
May 1, 2017 20:43
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Pool Selection
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| function pickOne(list) { | |
| var index = -1; | |
| var r = random(1); | |
| while (r > 0) { | |
| index++; | |
| r = r - list[index].prob; | |
| } | |
| return list[index]; | |
| } |
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I am not sure pickOne(list) does what it is supposed to do when the list is not sorted by list[].prob.
Consider the list 0|.10, 1|.60, 2|.20, 3|.10 where we have four items 0 to 3 having prob. .10, .60, .20 and .10 in that order. The function pickOne(list) will select item 0 when R = .10 or less. The function will select item 1 for any R > .10.
AKS