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Correct ch.4 MNIST: set threshold to 0.0 when not using sigmoid (#461)

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* Correct ch.4 MNIST: set threshold to 0.0 when not using sigmoid

* Also change 0.5 to 0.0 in the text

Co-authored-by: Ben van der Burgh <ben@metabolic.nl>
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Benjamin van der Burgh 2022-04-25 07:50:24 +02:00 committed by GitHub
parent e170b69503
commit b87a476975
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1 changed files with 2 additions and 2 deletions
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04_mnist_basics.ipynb
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@ -3833,7 +3833,7 @@
"cell_type": "markdown", "cell_type": "markdown",
"metadata": {}, "metadata": {},
"source": [ "source": [
"Let's check our accuracy. To decide if an output represents a 3 or a 7, we can just check whether it's greater than 0.5, so our accuracy for each item can be calculated (using broadcasting, so no loops!) with:" "Let's check our accuracy. To decide if an output represents a 3 or a 7, we can just check whether it's greater than 0.0, so our accuracy for each item can be calculated (using broadcasting, so no loops!) with:"
] ]
}, },
{ {
@ -3859,7 +3859,7 @@
} }
], ],
"source": [ "source": [
"corrects = (preds>0.5).float() == train_y\n", "corrects = (preds>0.0).float() == train_y\n",
"corrects" "corrects"
] ]
}, },