Hat Matrix
In statistics, the hat matrix H projects the observed values y of response variable to the predicted values ลท:
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Famous quotes containing the words hat and/or matrix:
“I saw a guide-post surmounted by a pair of moose horns.... They are sometimes used for ornamental hat-trees, together with deer’s horns, in front entries; but ... I trust that I shall have a better excuse for killing a moose than that I may hang my hat on his horns.”
—Henry David Thoreau (1817–1862)
“As all historians know, the past is a great darkness, and filled with echoes. Voices may reach us from it; but what they say to us is imbued with the obscurity of the matrix out of which they come; and try as we may, we cannot always decipher them precisely in the clearer light of our day.”
—Margaret Atwood (b. 1939)