Mercurial > hg > tvii
changeset 16:b95fe82ac9ce
more notes to self
author | Jeff Hammel <k0scist@gmail.com> |
---|---|
date | Sun, 03 Sep 2017 13:17:33 -0700 |
parents | 926c127305fa |
children | bf8bd42f8cd7 |
files | tvii/logistic_regression.py tvii/sigmoid.py |
diffstat | 2 files changed, 20 insertions(+), 0 deletions(-) [+] |
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--- a/tvii/logistic_regression.py Sun Sep 03 12:11:03 2017 -0700 +++ b/tvii/logistic_regression.py Sun Sep 03 13:17:33 2017 -0700 @@ -12,6 +12,18 @@ import numpy as np +from .sigmoid import sigmoid + +def cost_function(_): + """ + Cost function for binary classification + yhat = sigmoid(W.T*x + b) + interpret yhat thhe probably that y=1 + + Loss function: + y log(yhat) + (1- {UNFINISHED}) + """ + raise NotImplementedError('TODO') def logistic_regression(_): """the slow way"""