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WelfordMean: remove unnecessary case for first sample

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setting the mean to the sample value and then adding 0 is the same as
setting the mean to zero and then add the sample value divided by 1
This commit is contained in:
bresch
2021-12-10 15:10:39 +01:00
committed by Daniel Agar
parent 5468841aa5
commit 67a893ac6d
1 changed files with 0 additions and 4 deletions
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src/lib/mathlib/math/WelfordMean.hpp
-4
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@@ -49,10 +49,6 @@ public:
// For a new value, compute the new count, new mean, the new M2. // For a new value, compute the new count, new mean, the new M2.
void update(const T &new_value) void update(const T &new_value)
{ {
if (_count == 0) {
_mean = new_value;
}
_count++; _count++;
// mean accumulates the mean of the entire dataset // mean accumulates the mean of the entire dataset