From 035016fb0cc826542aef77864f36df88a5055d06 Mon Sep 17 00:00:00 2001
From: Hamel Husain <hamel.husain@gmail.com>
Date: Sun, 6 Mar 2022 15:48:34 -0800
Subject: [PATCH] remove Normalize as stats are grabbed automatically (#502)

* remove Normalize

* clean
---
 06_multicat.ipynb       |  7 +++----
 clean/06_multicat.ipynb | 11 +++++------
 2 files changed, 8 insertions(+), 10 deletions(-)

diff --git a/06_multicat.ipynb b/06_multicat.ipynb
index deeb28e..e014d8a 100644
--- a/06_multicat.ipynb
+++ b/06_multicat.ipynb
@@ -1654,8 +1654,7 @@
     "    get_items=get_image_files,\n",
     "    get_y=get_ctr,\n",
     "    splitter=FuncSplitter(lambda o: o.parent.name=='13'),\n",
-    "    batch_tfms=[*aug_transforms(size=(240,320)), \n",
-    "                Normalize.from_stats(*imagenet_stats)]\n",
+    "    batch_tfms=aug_transforms(size=(240,320)), \n",
     ")"
    ]
   },
@@ -2169,11 +2168,11 @@
    "split_at_heading": true
   },
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   }
  },
  "nbformat": 4,
- "nbformat_minor": 2
+ "nbformat_minor": 4
 }
diff --git a/clean/06_multicat.ipynb b/clean/06_multicat.ipynb
index 830e304..581aaa7 100644
--- a/clean/06_multicat.ipynb
+++ b/clean/06_multicat.ipynb
@@ -326,7 +326,7 @@
    "source": [
     "def binary_cross_entropy(inputs, targets):\n",
     "    inputs = inputs.sigmoid()\n",
-    "    return -torch.where(targets==1, inputs, 1-inputs).log().mean()"
+    "    return -torch.where(targets==1, 1-inputs, inputs).log().mean()"
    ]
   },
   {
@@ -534,8 +534,7 @@
     "    get_items=get_image_files,\n",
     "    get_y=get_ctr,\n",
     "    splitter=FuncSplitter(lambda o: o.parent.name=='13'),\n",
-    "    batch_tfms=[*aug_transforms(size=(240,320)), \n",
-    "                Normalize.from_stats(*imagenet_stats)]\n",
+    "    batch_tfms=aug_transforms(size=(240,320)), \n",
     ")"
    ]
   },
@@ -682,7 +681,7 @@
     "1. When is it okay to tune a hyperparameter on the validation set?\n",
     "1. How is `y_range` implemented in fastai? (See if you can implement it yourself and test it without peeking!)\n",
     "1. What is a regression problem? What loss function should you use for such a problem?\n",
-    "1. What do you need to do to make sure the fastai library applies the same data augmentation to your inputs images and your target point coordinates?"
+    "1. What do you need to do to make sure the fastai library applies the same data augmentation to your input images and your target point coordinates?"
    ]
   },
   {
@@ -713,11 +712,11 @@
    "split_at_heading": true
   },
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   }
  },
  "nbformat": 4,
- "nbformat_minor": 2
+ "nbformat_minor": 4
 }