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19 lines
356 B
19 lines
356 B
#pragma once
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#include "./server/libaquery.h"
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#include "./server/aggregations.h"
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auto covariance = [](auto x, auto y) {
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auto xmean = avg(x);
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auto ymean = avg(y);
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return avg(((x - xmean) * (y - ymean)));
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};
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auto sd = [](auto x) {
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return sqrt(covariance(x, x));
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};
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auto paircorr = [](auto x, auto y) {
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return (covariance(x, y) / (sd(x) * sd(y)));
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};
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