{"cells":[{"metadata":{},"cell_type":"markdown","source":"# Experimento com resnet34\n* pré-treino\n* unfreeze\n* fine_tune\n* dataset completo"},{"metadata":{"_uuid":"8f2839f25d086af736a60e9eeb907d3b93b6e0e5","_cell_guid":"b1076dfc-b9ad-4769-8c92-a6c4dae69d19","trusted":true},"cell_type":"code","source":"import numpy as np\nfrom time import sleep\nimport pandas as pd\nfrom fastai.vision.all import *\nfrom fastai.callback.tracker import SaveModelCallback\ndf = pd.read_csv(\"../input/cassava-leaf-disease-classification/train.csv\")\ndf_train = df.sample(int(0.7*len(df)))\ndf_test = df[~df.image_id.isin(df_train.image_id)] \ndls = ImageDataLoaders.from_df(df, path=\"../input/cassava-leaf-disease-classification/train_images/\", item_tfms=Resize(224))","execution_count":null,"outputs":[]},{"metadata":{"trusted":true},"cell_type":"code","source":"rede = resnet34\npretreino = True\nlearn = cnn_learner(dls, rede, metrics=[error_rate,accuracy], pretrained=pretreino, path='./models')\nsave_callback = SaveModelCallback(fname='best_model', with_opt=True, monitor='valid_loss', reset_on_fit=False) \n#learn.recorder.plot_loss()\n#learn = learn.load('best_model') #originalmente descomentado\nlearn.unfreeze()","execution_count":null,"outputs":[]},{"metadata":{"trusted":true},"cell_type":"code","source":"learn.lr_find()","execution_count":null,"outputs":[]},{"metadata":{"trusted":true},"cell_type":"code","source":"learn.fine_tune(10,0.00036307806149125097, cbs=save_callback)","execution_count":null,"outputs":[]},{"metadata":{},"cell_type":"markdown","source":"**sem unfreeze**"},{"metadata":{"trusted":true},"cell_type":"code","source":"rede = resnet34\npretreino = True\nlearn = cnn_learner(dls, rede, metrics=[error_rate,accuracy], pretrained=pretreino, path='./models')\nsave_callback = SaveModelCallback(fname='best_model', with_opt=True, monitor='valid_loss', reset_on_fit=False) \nlearn.load('best_model') \n","execution_count":null,"outputs":[]},{"metadata":{"_uuid":"d629ff2d2480ee46fbb7e2d37f6b5fab8052498a","_cell_guid":"79c7e3d0-c299-4dcb-8224-4455121ee9b0","trusted":true},"cell_type":"code","source":"learn.lr_find()","execution_count":null,"outputs":[]},{"metadata":{"trusted":true},"cell_type":"code","source":"","execution_count":null,"outputs":[]},{"metadata":{"trusted":true},"cell_type":"code","source":"learn.fine_tune(10,1.9054606673307718e-05, cbs=save_callback)","execution_count":null,"outputs":[]}],"metadata":{"kernelspec":{"language":"python","display_name":"Python 3","name":"python3"},"language_info":{"pygments_lexer":"ipython3","nbconvert_exporter":"python","version":"3.6.4","file_extension":".py","codemirror_mode":{"name":"ipython","version":3},"name":"python","mimetype":"text/x-python"}},"nbformat":4,"nbformat_minor":4}