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A comment on Understanding gradient descent. Parent comment
"The Concept of Conjugate Gradient Descent in Python"
http://ikuz.eu/2015/04/15/the-concept-of-conjugate-gradient-...
And for those with more math and less patience for explanation, Robert Gower also offers:
"Conjugate Gradients: The short and painful explanation with oblique projections"
http://www.maths.ed.ac.uk/~s1065527/pdf/GowerR_Painful_PCG_p...
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"The Concept of Conjugate Gradient Descent in Python"
http://ikuz.eu/2015/04/15/the-concept-of-conjugate-gradient-...
And for those with more math and less patience for explanation, Robert Gower also offers:
"Conjugate Gradients: The short and painful explanation with oblique projections"
http://www.maths.ed.ac.uk/~s1065527/pdf/GowerR_Painful_PCG_p...