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@uchidama
Created December 28, 2017 08:04
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A simple example to predict mnist by load model on jupyter notebook
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{
"cells": [
{
"cell_type": "code",
"execution_count": 1,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stderr",
"output_type": "stream",
"text": [
"Using TensorFlow backend.\n"
]
}
],
"source": [
"'''\n",
"IMPORT MODULES\n",
"'''\n",
"from __future__ import print_function\n",
"import keras\n",
"from keras.datasets import mnist\n",
"from keras.models import Sequential\n",
"from keras.layers import Dense, Dropout, Flatten\n",
"from keras.layers import Conv2D, MaxPooling2D\n",
"from keras import backend as K\n",
"from keras.models import load_model\n",
"\n",
"import numpy as np\n",
"\n",
"import matplotlib.pyplot as plt\n",
"from matplotlib import cm\n",
"%matplotlib inline\n",
"\n",
"import random"
]
},
{
"cell_type": "code",
"execution_count": 2,
"metadata": {
"collapsed": false
},
"outputs": [],
"source": [
"'''\n",
"LOAD MNIST DATA\n",
"'''\n",
"# input image dimensions\n",
"img_rows, img_cols = 28, 28\n",
"\n",
"# the data, shuffled and split between train and test sets\n",
"(x_train, y_train), (x_test, y_test) = mnist.load_data()\n",
"\n",
"if K.image_data_format() == 'channels_first':\n",
" x_train = x_train.reshape(x_train.shape[0], 1, img_rows, img_cols)\n",
" x_test = x_test.reshape(x_test.shape[0], 1, img_rows, img_cols)\n",
" input_shape = (1, img_rows, img_cols)\n",
"else:\n",
" x_train = x_train.reshape(x_train.shape[0], img_rows, img_cols, 1)\n",
" x_test = x_test.reshape(x_test.shape[0], img_rows, img_cols, 1)\n",
" input_shape = (img_rows, img_cols, 1)\n",
"\n",
"x_train = x_train.astype('float32')\n",
"x_test = x_test.astype('float32')\n",
"x_train /= 255\n",
"x_test /= 255"
]
},
{
"cell_type": "code",
"execution_count": 3,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"index: 7703\n",
"predict ret: [[ 1. 0. 0. 0. 0. 0. 0. 0. 0. 0.]]\n"
]
},
{
"data": {
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"text/plain": [
"<matplotlib.figure.Figure at 0x145baefd0>"
]
},
"metadata": {},
"output_type": "display_data"
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"I think this digit is a 0\n"
]
}
],
"source": [
"'''\n",
"LOAD MODEL AND PREDICT\n",
"'''\n",
"model = load_model('model_mnist_cnn.h5')\n",
"\n",
"index = random.randint(0, len(x_test)-1)\n",
"print(\"index:\", index)\n",
"\n",
"ret = model.predict(x_test[index:(index+1)], batch_size=1) # OK\n",
"print(\"predict ret:\", ret)\n",
"\n",
"np.set_printoptions(precision=5, suppress=True) #指数表示の禁止\n",
"\n",
"plt.imshow(x_test[index].reshape(28, 28), cmap=cm.gray_r)\n",
"plt.show()\n",
"\n",
"bestnum = 0.0\n",
"bestclass = 0\n",
"for n in [0,1,2,3,4,5,6,7,8,9]:\n",
" if bestnum < ret[0][n]:\n",
" bestnum = ret[0][n]\n",
" bestclass = n\n",
"\n",
"print(\"I think this digit is a \", bestclass)"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": []
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3",
"language": "python",
"name": "python3"
},
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 3
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.5.1"
}
},
"nbformat": 4,
"nbformat_minor": 0
}
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