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			@ -72,7 +72,7 @@ HessianFactor::HessianFactor() :
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/* ************************************************************************* */
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HessianFactor::HessianFactor(Key j, const Matrix& G, const Vector& g, double f)
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    : GaussianFactor(KeyVector{j}), info_(Dims{G.cols(), 1}) {
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    : GaussianFactor(KeyVector{j}), info_(Dims{static_cast<Key>(G.cols()), 1}) {
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  if (G.rows() != G.cols() || G.rows() != g.size())
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    throw invalid_argument(
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        "Attempting to construct HessianFactor with inconsistent matrix and/or vector dimensions");
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			@ -85,7 +85,7 @@ HessianFactor::HessianFactor(Key j, const Matrix& G, const Vector& g, double f)
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// error is 0.5*(x-mu)'*inv(Sigma)*(x-mu) = 0.5*(x'*G*x - 2*x'*G*mu + mu'*G*mu)
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// where G = inv(Sigma), g = G*mu, f = mu'*G*mu = mu'*g
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HessianFactor::HessianFactor(Key j, const Vector& mu, const Matrix& Sigma)
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    : GaussianFactor(KeyVector{j}), info_(Dims{Sigma.cols(), 1}) {
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    : GaussianFactor(KeyVector{j}), info_(Dims{static_cast<Key>(Sigma.cols()), 1}) {
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  if (Sigma.rows() != Sigma.cols() || Sigma.rows() != mu.size())
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    throw invalid_argument(
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        "Attempting to construct HessianFactor with inconsistent matrix and/or vector dimensions");
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			@ -99,7 +99,7 @@ HessianFactor::HessianFactor(Key j1, Key j2, const Matrix& G11,
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    const Matrix& G12, const Vector& g1, const Matrix& G22, const Vector& g2,
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    double f) :
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    GaussianFactor(KeyVector{j1,j2}), info_(
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        Dims{G11.cols(),G22.cols(),1}) {
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        Dims{static_cast<Key>(G11.cols()),static_cast<Key>(G22.cols()),1}) {
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  info_.setDiagonalBlock(0, G11);
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  info_.setOffDiagonalBlock(0, 1, G12);
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  info_.setDiagonalBlock(1, G22);
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			@ -113,7 +113,7 @@ HessianFactor::HessianFactor(Key j1, Key j2, Key j3, const Matrix& G11,
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    const Matrix& G23, const Vector& g2, const Matrix& G33, const Vector& g3,
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    double f) :
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    GaussianFactor(KeyVector{j1,j2,j3}), info_(
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        Dims{G11.cols(),G22.cols(),G33.cols(),1}) {
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        Dims{static_cast<Key>(G11.cols()),static_cast<Key>(G22.cols()),static_cast<Key>(G33.cols()),1}) {
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  if (G11.rows() != G11.cols() || G11.rows() != G12.rows()
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      || G11.rows() != G13.rows() || G11.rows() != g1.size()
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      || G22.cols() != G12.cols() || G33.cols() != G13.cols()
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