Category Archives: PyTorch
How to deal with an imbalanced dataset using WeightedRandomSampler in PyTorch.
We use something called samplers for OverSampling. Though we did not use samplers exclusively, PyTorch used it for us internally. When we say shuffle=False, PyTorch ended up using SequentialSampler it gives an index from zero to the length of the dataset. When shuffle=True it ends up using a RandomSampler.
How to modify pre-train PyTorch model for Finetuning and Feature Extraction?
classification layer of the pre-trained model is specific to the original classification task, and subsequently specific to the set of classes on which the model was trained. You simply add a new classifier layer, which will be trained from scratch.
How to use class weight in CrossEntropyLoss for an imbalanced dataset?
how to create a loss function for an imbalanced dataset in which minority class proportionally to its underrepresentation. You will use PyTorch to define the loss function and class weights to help the model learn from the imbalanced data.
How to initialize weight and bias in PyTorch?
We’re gonna check instant m if it’s convolution layer then we can initialize with a variety of different initialization techniques we’re just gonna do the kaiming_uniform_ on the weight of that specific module and we’re only gonna do if it’s a conv2d.
How to apply Gradient Clipping in PyTorch
The value for the gradient vector norm or preferred range can be configured by trial and error, by using common values used in the literature, or by first observing common vector norms or ranges via experimentation and then choosing a sensible value.