{"metadata":{"kernelspec":{"language":"python","display_name":"Python 3","name":"python3"},"language_info":{"name":"python","version":"3.10.12","mimetype":"text/x-python","codemirror_mode":{"name":"ipython","version":3},"pygments_lexer":"ipython3","nbconvert_exporter":"python","file_extension":".py"},"kaggle":{"accelerator":"gpu","dataSources":[{"sourceId":3362,"databundleVersionId":31148,"sourceType":"competition"}],"dockerImageVersionId":30637,"isInternetEnabled":true,"language":"python","sourceType":"notebook","isGpuEnabled":true}},"nbformat_minor":4,"nbformat":4,"cells":[{"cell_type":"code","source":"# This Python 3 environment comes with many helpful analytics libraries installed\n# It is defined by the kaggle/python Docker image: https://github.com/kaggle/docker-python\n# For example, here's several helpful packages to load\n\nimport numpy as np # linear algebra\nimport pandas as pd # data processing, CSV file I/O (e.g. pd.read_csv)\n\n# Input data files are available in the read-only \"../input/\" directory\n# For example, running this (by clicking run or pressing Shift+Enter) will list all files under the input directory\n\nimport os\nfor dirname, _, filenames in os.walk('/kaggle/input'):\n    for filename in filenames:\n        print(os.path.join(dirname, filename))\n\n# You can write up to 20GB to the current directory (/kaggle/working/) that gets preserved as output when you create a version using \"Save & Run All\" \n# You can also write temporary files to /kaggle/temp/, but they won't be saved outside of the current session","metadata":{"execution":{"iopub.status.busy":"2024-01-26T17:06:54.740844Z","iopub.execute_input":"2024-01-26T17:06:54.742069Z","iopub.status.idle":"2024-01-26T17:06:55.138744Z","shell.execute_reply.started":"2024-01-26T17:06:54.742016Z","shell.execute_reply":"2024-01-26T17:06:55.137642Z"},"trusted":true},"execution_count":null,"outputs":[]},{"cell_type":"code","source":"pip install tensorflow==2.8.0","metadata":{"execution":{"iopub.status.busy":"2024-01-26T17:06:55.140974Z","iopub.execute_input":"2024-01-26T17:06:55.141431Z","iopub.status.idle":"2024-01-26T17:08:01.501864Z","shell.execute_reply.started":"2024-01-26T17:06:55.141393Z","shell.execute_reply":"2024-01-26T17:08:01.500527Z"},"trusted":true},"execution_count":null,"outputs":[]},{"cell_type":"code","source":"import tensorflow as tf","metadata":{"execution":{"iopub.status.busy":"2024-01-26T17:08:01.503433Z","iopub.execute_input":"2024-01-26T17:08:01.503786Z","iopub.status.idle":"2024-01-26T17:08:04.771031Z","shell.execute_reply.started":"2024-01-26T17:08:01.503753Z","shell.execute_reply":"2024-01-26T17:08:04.770133Z"},"trusted":true},"execution_count":null,"outputs":[]},{"cell_type":"code","source":"print(tf.__version__)","metadata":{"execution":{"iopub.status.busy":"2024-01-26T17:08:04.772401Z","iopub.execute_input":"2024-01-26T17:08:04.773173Z","iopub.status.idle":"2024-01-26T17:08:04.779316Z","shell.execute_reply.started":"2024-01-26T17:08:04.773140Z","shell.execute_reply":"2024-01-26T17:08:04.777781Z"},"trusted":true},"execution_count":null,"outputs":[]},{"cell_type":"code","source":"import os\nprint(os.listdir(\"../input\"))\n\nimport zipfile\n\nwith zipfile.ZipFile(\"/kaggle/input/dogs-vs-cats/test1.zip\",\"r\") as z:\n    z.extractall(\".\")\n    \nwith zipfile.ZipFile(\"/kaggle/input/dogs-vs-cats/train.zip\",\"r\") as z:\n    z.extractall(\".\")","metadata":{"execution":{"iopub.status.busy":"2024-01-26T17:08:04.782392Z","iopub.execute_input":"2024-01-26T17:08:04.782784Z","iopub.status.idle":"2024-01-26T17:08:19.685699Z","shell.execute_reply.started":"2024-01-26T17:08:04.782749Z","shell.execute_reply":"2024-01-26T17:08:19.684746Z"},"trusted":true},"execution_count":null,"outputs":[]},{"cell_type":"code","source":"# plot dog photos from the dogs vs cats dataset\nfrom matplotlib import pyplot\nfrom matplotlib.image import imread\ntrain_folder = 'train/'\n\n# define location of dataset\nfolder = train_folder\n# plot first few images\nfor i in range(9):\n\t# define subplot\n\tpyplot.subplot(330 + 1 + i)\n\t# define filename\n\tfilename = folder + 'dog.' + str(i) + '.jpg'\n\t# load image pixels\n\timage = imread(filename)\n\t# plot raw pixel data\n\tpyplot.imshow(image)\n# show the figure\npyplot.show()","metadata":{"execution":{"iopub.status.busy":"2024-01-26T17:08:19.686907Z","iopub.execute_input":"2024-01-26T17:08:19.687540Z","iopub.status.idle":"2024-01-26T17:08:21.141529Z","shell.execute_reply.started":"2024-01-26T17:08:19.687509Z","shell.execute_reply":"2024-01-26T17:08:21.140511Z"},"trusted":true},"execution_count":null,"outputs":[]},{"cell_type":"code","source":"# plot first few images\nfor i in range(9):\n\t# define subplot\n\tpyplot.subplot(330 + 1 + i)\n\t# define filename\n\tfilename = folder + 'cat.' + str(i) + '.jpg'\n\t# load image pixels\n\timage = imread(filename)\n\t# plot raw pixel data\n\tpyplot.imshow(image)\n# show the figure\npyplot.show()\n","metadata":{"execution":{"iopub.status.busy":"2024-01-26T17:08:21.142997Z","iopub.execute_input":"2024-01-26T17:08:21.143389Z","iopub.status.idle":"2024-01-26T17:08:22.685326Z","shell.execute_reply.started":"2024-01-26T17:08:21.143358Z","shell.execute_reply":"2024-01-26T17:08:22.684277Z"},"trusted":true},"execution_count":null,"outputs":[]},{"cell_type":"code","source":"train_folder","metadata":{"execution":{"iopub.status.busy":"2024-01-26T17:08:22.686767Z","iopub.execute_input":"2024-01-26T17:08:22.687110Z","iopub.status.idle":"2024-01-26T17:08:22.693956Z","shell.execute_reply.started":"2024-01-26T17:08:22.687080Z","shell.execute_reply":"2024-01-26T17:08:22.692409Z"},"trusted":true},"execution_count":null,"outputs":[]},{"cell_type":"code","source":"# load dogs vs cats dataset, reshape and save to a new file\nfrom os import listdir\nfrom numpy import asarray\nfrom numpy import save\nfrom keras.preprocessing.image import load_img\nfrom keras.preprocessing.image import img_to_array","metadata":{"execution":{"iopub.status.busy":"2024-01-26T17:08:22.695264Z","iopub.execute_input":"2024-01-26T17:08:22.695560Z","iopub.status.idle":"2024-01-26T17:08:22.748171Z","shell.execute_reply.started":"2024-01-26T17:08:22.695533Z","shell.execute_reply":"2024-01-26T17:08:22.747154Z"},"trusted":true},"execution_count":null,"outputs":[]},{"cell_type":"code","source":"# define location of dataset\nfolder = 'train/'\nphotos, labels = list(), list()\n# enumerate files in the directory\nfor file in listdir(folder):\n#for file in listdir(folder[:10_000]): # select 10_000 images\n\t# determine class\n\toutput = 0.0\n\tif file.startswith('dog'):\n\t\toutput = 1.0\n\t# load image\n\tphoto = load_img(folder + file, target_size=(200, 200))\n\t# convert to numpy array\n\tphoto = img_to_array(photo)\n\t# store\n\tphotos.append(photo)\n\tlabels.append(output)\n# convert to a numpy arrays\nphotos = asarray(photos)\nlabels = asarray(labels)\nprint(photos.shape, labels.shape)\n# save the reshaped photos\nsave('dogs_vs_cats_photos.npy', photos)\nsave('dogs_vs_cats_labels.npy', labels)","metadata":{"execution":{"iopub.status.busy":"2024-01-26T17:08:22.749778Z","iopub.execute_input":"2024-01-26T17:08:22.750216Z","iopub.status.idle":"2024-01-26T17:10:03.153477Z","shell.execute_reply.started":"2024-01-26T17:08:22.750173Z","shell.execute_reply":"2024-01-26T17:10:03.149992Z"},"trusted":true},"execution_count":null,"outputs":[]},{"cell_type":"code","source":"# create directories\nimport os\ndataset_home = 'dataset_dogs_vs_cats/'\nsubdirs = ['train/', 'test/']\nfor subdir in subdirs:\n\t# create label subdirectories\n\tlabeldirs = ['dogs/', 'cats/']\n\tfor labldir in labeldirs:\n\t\tnewdir = dataset_home + subdir + labldir\n\t\tos.makedirs(newdir, exist_ok=True)","metadata":{"execution":{"iopub.status.busy":"2024-01-26T17:10:03.155275Z","iopub.execute_input":"2024-01-26T17:10:03.155630Z","iopub.status.idle":"2024-01-26T17:10:03.165038Z","shell.execute_reply.started":"2024-01-26T17:10:03.155598Z","shell.execute_reply":"2024-01-26T17:10:03.163996Z"},"trusted":true},"execution_count":null,"outputs":[]},{"cell_type":"code","source":"# organize dataset into a useful structure\nfrom os import makedirs\nfrom os import listdir\nfrom shutil import copyfile\nfrom random import seed\nfrom random import random\n# create directories\ndataset_home = 'dataset_dogs_vs_cats/'\nsubdirs = ['train/', 'test/']\nfor subdir in subdirs:\n\t# create label subdirectories\n\tlabeldirs = ['dogs/', 'cats/']\n\tfor labldir in labeldirs:\n\t\tnewdir = dataset_home + subdir + labldir\n\t\tmakedirs(newdir, exist_ok=True)\n# seed random number generator\nseed(1)\n# define ratio of pictures to use for validation\nval_ratio = 0.25\n# copy training dataset images into subdirectories\nsrc_directory = 'train/'\nfor file in listdir(src_directory):\n\tsrc = src_directory + '/' + file\n\tdst_dir = 'train/'\n\tif random() < val_ratio:\n\t\tdst_dir = 'test/'\n\tif file.startswith('cat'):\n\t\tdst = dataset_home + dst_dir + 'cats/'  + file\n\t\tcopyfile(src, dst)\n\telif file.startswith('dog'):\n\t\tdst = dataset_home + dst_dir + 'dogs/'  + file\n\t\tcopyfile(src, dst)","metadata":{"execution":{"iopub.status.busy":"2024-01-26T17:10:03.166309Z","iopub.execute_input":"2024-01-26T17:10:03.166631Z","iopub.status.idle":"2024-01-26T17:10:23.422780Z","shell.execute_reply.started":"2024-01-26T17:10:03.166603Z","shell.execute_reply":"2024-01-26T17:10:23.421875Z"},"trusted":true},"execution_count":null,"outputs":[]},{"cell_type":"code","source":"!ls -l test1 | wc","metadata":{"execution":{"iopub.status.busy":"2024-01-26T17:10:23.424157Z","iopub.execute_input":"2024-01-26T17:10:23.424478Z","iopub.status.idle":"2024-01-26T17:10:25.183108Z","shell.execute_reply.started":"2024-01-26T17:10:23.424449Z","shell.execute_reply":"2024-01-26T17:10:25.181851Z"},"trusted":true},"execution_count":null,"outputs":[]},{"cell_type":"code","source":"!ls -l dataset_dogs_vs_cats/train/dogs | wc -l","metadata":{"execution":{"iopub.status.busy":"2024-01-26T17:10:25.187634Z","iopub.execute_input":"2024-01-26T17:10:25.187993Z","iopub.status.idle":"2024-01-26T17:10:26.776412Z","shell.execute_reply.started":"2024-01-26T17:10:25.187962Z","shell.execute_reply":"2024-01-26T17:10:26.775011Z"},"trusted":true},"execution_count":null,"outputs":[]},{"cell_type":"code","source":"!ls -l dataset_dogs_vs_cats/train/cats | wc -l","metadata":{"execution":{"iopub.status.busy":"2024-01-26T17:10:26.778721Z","iopub.execute_input":"2024-01-26T17:10:26.779120Z","iopub.status.idle":"2024-01-26T17:10:28.345546Z","shell.execute_reply.started":"2024-01-26T17:10:26.779087Z","shell.execute_reply":"2024-01-26T17:10:28.344374Z"},"trusted":true},"execution_count":null,"outputs":[]},{"cell_type":"code","source":"\nimport sys\nfrom keras.preprocessing.image import ImageDataGenerator\nfrom matplotlib import pyplot\nfrom tensorflow.keras.utils import to_categorical\nfrom keras.models import Sequential\nfrom keras.layers import Conv2D\nfrom keras.layers import MaxPooling2D\nfrom keras.layers import Dense\nfrom keras.layers import Flatten\nfrom tensorflow.keras.optimizers import SGD\n\n\n# define cnn model\ndef define_model():\n\tmodel = Sequential()\n\tmodel.add(Conv2D(32, (3, 3), activation='relu', kernel_initializer='he_uniform', padding='same', input_shape=(200, 200, 3)))\n\tmodel.add(MaxPooling2D((2, 2)))\n\tmodel.add(Flatten())\n\tmodel.add(Dense(128, activation='relu', kernel_initializer='he_uniform'))\n\tmodel.add(Dense(1, activation='sigmoid'))\n\t# compile model\n\topt = SGD(lr=0.001, momentum=0.9)\n\tmodel.compile(optimizer=opt, loss='binary_crossentropy', metrics=['accuracy'])\n\treturn model\n\n# plot diagnostic learning curves\ndef summarize_diagnostics(history):\n\t# plot loss\n\tpyplot.subplot(211)\n\tpyplot.title('Cross Entropy Loss')\n\tpyplot.plot(history.history['loss'], color='blue', label='train')\n\tpyplot.plot(history.history['val_loss'], color='orange', label='test')\n\t# plot accuracy\n\tpyplot.subplot(212)\n\tpyplot.title('Classification Accuracy')\n\tpyplot.plot(history.history['accuracy'], color='blue', label='train')\n\tpyplot.plot(history.history['val_accuracy'], color='orange', label='test')\n\t# save plot to file\n\tfilename = sys.argv[0].split('/')[-1]\n\tpyplot.savefig(filename + '_plot.png')\n\tpyplot.close()\n\n# run the test harness for evaluating a model\ndef run_test_harness():\n\t# define model\n\tmodel = define_model()\n\t# create data generator\n\tdatagen = ImageDataGenerator(rescale=1.0/255.0)\n\t# prepare iterators\n\ttrain_it = datagen.flow_from_directory('dataset_dogs_vs_cats/train/',\n\t\tclass_mode='binary', batch_size=64, target_size=(200, 200))\n\ttest_it = datagen.flow_from_directory('dataset_dogs_vs_cats/test/',\n\t\tclass_mode='binary', batch_size=64, target_size=(200, 200))\n\t# fit model\n\thistory = model.fit_generator(train_it, steps_per_epoch=len(train_it),\n\t\tvalidation_data=test_it, validation_steps=len(test_it), epochs=20, verbose=1)\n\t# evaluate model\n\t_, acc = model.evaluate_generator(test_it, steps=len(test_it), verbose=0)\n\tprint('> %.3f' % (acc * 100.0))\n\t# learning curves\n\tsummarize_diagnostics(history)\n    ","metadata":{"execution":{"iopub.status.busy":"2024-01-26T17:10:28.347577Z","iopub.execute_input":"2024-01-26T17:10:28.347986Z","iopub.status.idle":"2024-01-26T17:10:28.370081Z","shell.execute_reply.started":"2024-01-26T17:10:28.347952Z","shell.execute_reply":"2024-01-26T17:10:28.369235Z"},"trusted":true},"execution_count":null,"outputs":[]},{"cell_type":"code","source":"!pip install livelossplot -q","metadata":{"execution":{"iopub.status.busy":"2024-01-26T17:10:28.371374Z","iopub.execute_input":"2024-01-26T17:10:28.371683Z","iopub.status.idle":"2024-01-26T17:10:43.289156Z","shell.execute_reply.started":"2024-01-26T17:10:28.371656Z","shell.execute_reply":"2024-01-26T17:10:43.287863Z"},"trusted":true},"execution_count":null,"outputs":[]},{"cell_type":"code","source":"from livelossplot import PlotLossesKeras","metadata":{"execution":{"iopub.status.busy":"2024-01-26T17:10:43.291126Z","iopub.execute_input":"2024-01-26T17:10:43.291518Z","iopub.status.idle":"2024-01-26T17:10:43.307746Z","shell.execute_reply.started":"2024-01-26T17:10:43.291485Z","shell.execute_reply":"2024-01-26T17:10:43.306567Z"},"trusted":true},"execution_count":null,"outputs":[]},{"cell_type":"code","source":"import sys\nfrom matplotlib import pyplot\nfrom keras.preprocessing.image import ImageDataGenerator\nfrom keras.applications.vgg16 import VGG16\nfrom keras.models import Model\nfrom keras.layers import Dense\nfrom keras.layers import Flatten\nfrom tensorflow.keras.optimizers import SGD\n\n\n# define cnn model\ndef define_model():\n    # load model\n    model = VGG16(include_top=False, input_shape=(224, 224, 3))\n    # mark loaded layers as not trainable\n    for layer in model.layers[:15]:\n        layer.trainable = False\n    # add new classifier layers\n    flat1 = Flatten()(model.layers[-1].output)\n    class1 = Dense(128, activation='relu', kernel_initializer='he_uniform')(flat1)\n    output = Dense(1, activation='sigmoid')(class1)\n    # define new model\n    model = Model(inputs=model.inputs, outputs=output)\n    # compile model\n    \n    opt = SGD(learning_rate=0.0001, momentum=0.9)\n    model.compile(optimizer=opt, loss='binary_crossentropy', metrics=['accuracy'])\n    return model\n\n# plot diagnostic learning curves\ndef summarize_diagnostics(history):\n    # plot loss\n    pyplot.subplot(211)\n    pyplot.title('Cross Entropy Loss')\n    pyplot.plot(history.history['loss'], color='blue', label='train')\n    pyplot.plot(history.history['val_loss'], color='orange', label='test')\n    # plot accuracy\n    pyplot.subplot(212)\n    pyplot.title('Classification Accuracy')\n    pyplot.plot(history.history['accuracy'], color='blue', label='train')\n    pyplot.plot(history.history['val_accuracy'], color='orange', label='test')\n    # save plot to file\n    filename = sys.argv[0].split('/')[-1]\n    pyplot.savefig(filename + '_plot.png')\n    pyplot.close()\n\n# run the test harness for evaluating a model\ndef run_test_harness():\n    # define model\n    model = define_model()\n    # create data generator\n    datagen = ImageDataGenerator(\n        rescale=1./255,\n        rotation_range=40,\n        width_shift_range=0.2,\n        height_shift_range=0.2,\n        shear_range=0.2,\n        zoom_range=0.2,\n        horizontal_flip=True,\n        fill_mode='nearest'\n    )\n   # prepare iterator\n    train_it = datagen.flow_from_directory('dataset_dogs_vs_cats/train/',\n        class_mode='binary', batch_size=64, target_size=(224, 224))\n    test_it = datagen.flow_from_directory('dataset_dogs_vs_cats/test/',\n        class_mode='binary', batch_size=64, target_size=(224, 224))\n    # fit model\n    history = model.fit(train_it, \n                        steps_per_epoch=len(train_it),\n                        validation_data=test_it, \n                        validation_steps=len(test_it), \n                        epochs=5, verbose=1,\n                        callbacks=[PlotLossesKeras()])\n    # evaluate model\n    _, acc = model.evaluate_generator(test_it, steps=len(test_it), verbose=1)\n    print('> %.3f' % (acc * 100.0))\n    # learning curves\n    summarize_diagnostics(history)\n\n\nrun_test_harness()","metadata":{"execution":{"iopub.status.busy":"2024-01-26T17:10:43.309100Z","iopub.execute_input":"2024-01-26T17:10:43.309419Z","iopub.status.idle":"2024-01-26T17:40:57.387050Z","shell.execute_reply.started":"2024-01-26T17:10:43.309392Z","shell.execute_reply":"2024-01-26T17:40:57.386141Z"},"trusted":true},"execution_count":null,"outputs":[]},{"cell_type":"code","source":"model = define_model()","metadata":{"execution":{"iopub.status.busy":"2024-01-26T17:41:09.367772Z","iopub.execute_input":"2024-01-26T17:41:09.368754Z","iopub.status.idle":"2024-01-26T17:41:09.709783Z","shell.execute_reply.started":"2024-01-26T17:41:09.368710Z","shell.execute_reply":"2024-01-26T17:41:09.708593Z"},"trusted":true},"execution_count":null,"outputs":[]},{"cell_type":"code","source":"model.summary()","metadata":{"execution":{"iopub.status.busy":"2024-01-26T17:41:14.498713Z","iopub.execute_input":"2024-01-26T17:41:14.499471Z","iopub.status.idle":"2024-01-26T17:41:14.555005Z","shell.execute_reply.started":"2024-01-26T17:41:14.499432Z","shell.execute_reply":"2024-01-26T17:41:14.554001Z"},"trusted":true},"execution_count":null,"outputs":[]},{"cell_type":"code","source":"","metadata":{},"execution_count":null,"outputs":[]}]}