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soruce Text transfer learning from fastai.text.all import * Train a text classifier from a pretrained model Using the high-level API path = untar_data(URLs.IMDB) dls = TextDataLoaders.from_folder(untar_data(URLs.IMDB), valid='test') dls.show_batch() text category 0 xxbos xxmaj match 1 : xxmaj tag xxmaj team xxmaj table xxmaj match xx...

soruce Tabular training from fastai.tabular.all import * path = untar_data(URLs.ADULT_SAMPLE) path.ls() df = pd.read_csv(path/'adult.csv') df.head() dls = TabularDataLoaders.from_csv(path/'adult.csv', path=path, y_names="salary", cat_names = ['workclass', 'education', 'marital-status', 'occupation', 'relationship', 'race'], cont_names...

soruce fine-tune Fine-tuning: A transfer learning technique where the parameters of a pretrained model are updated by training for additional epochs using a different task to that used for pretraining. When you use the fine_tune method, fastai will use these tricks for you. There are a few parameters you can set (which we’ll discuss later), bu...

soruce Transform from fastai.text.all import * from fastai.vision.all import * source = untar_data(URLs.MNIST_TINY)/'train' items = get_image_files(source) fn = items[0]; fn img = PILImage.create(fn); img tconv = ToTensor() img = tconv(img) img.shape,type(img) lbl = parent_label(fn); lbl tcat = Categorize(vocab=['3','7']) lbl = tcat(lbl); l...

soruce Loading the data with a factory method from fastai.vision.all import * path = untar_data(URLs.IMAGENETTE_160) dls = ImageDataLoaders.from_folder(path, valid='val', item_tfms=RandomResizedCrop(128, min_scale=0.35), batch_tfms=Normalize.from_stats(*imagenet_stats)) dls.show_batch() Loading the data with the data block API fnames = ...

soruce Building a DataBlock from scratch from fastai.data.all import * from fastai.vision.all import * path = untar_data(URLs.PETS) fnames = get_image_files(path/"images") dblock = DataBlock() dsets = dblock.datasets(fnames) dsets.train[0] > (Path('/home/jhoward/.fastai/data/oxford-iiit-pet/images/Birman_82.jpg'), Path('/home/jhoward/....

soruce Text transfer learning from fastai.text.all import * from fastai.vision.all import * # !pip install albumentations source = untar_data(URLs.PETS) items = get_image_files(source/"images") class AlbumentationsTransform(Transform): def __init__(self, aug): self.aug = aug def encodes(self, img: PILImage): aug_img = self.aug...

soruce Text transfer learning from fastai.tabular.all import * from fastai.collab import * path = untar_data(URLs.ML_100k) # The main table is in u.data. Since it’s not a proper csv, we have to specify a few things while opening it: the tab delimiter, the columns we want to keep and their names. ratings = pd.read_csv(path/'u.data', delimiter=...