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Minimise p(I=2|z=0) term a little more #42

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Minimise p(I=2|z=0) term a little more #42

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2 changes: 1 addition & 1 deletion kin.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -112,7 +112,7 @@ void Kinship::addGenotypes(int *gt_arr, float p)
_n11 += 2 * p * q; ///2ppq + 2qqp = 2pq(p+q) = 2pq == Hij
_n10 += 4 * p * q * (p * p + q * q); ///4pppq + 4qqqp = 4pq(pp + qq)

_n20 += p * p * p * p + q * q * q * q + 4 * q * q * p * p; ///pppp + qqqq + 4ppqq
_n20 += p * p * p * p + q * q * q + 2 * p * q; /// p^4 + q^4 + 4p^2q^2 = p^4 + q^4 + 2pq^2 + 2qp^2 = p^4 + q^4 + 2pq(p+q) = p^4 + q^4 + 2pq
_n21 += p * p + q * q; ///ppp + qqq + ppq + pqq = pp(p+q) + qq(q+p) = pp + qq
_n22 += 1;
_af.push_back(p);
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