Split custom pytorch dataset

import torch
import numpy as np
from torchvision import datasets
from torchvision import transforms
from torch.utils.data.sampler import SubsetRandomSampler

class CustomDatasetFromCSV(Dataset):
    def __init__(self, csv_path, transform=None):
        ....


dataset = CustomDatasetFromCSV(my_path)
batch_size = 16
validation_split = .2
shuffle_dataset = True
random_seed= 42

# Creating data indices for training and validation splits:
dataset_size = len(dataset)
indices = list(range(dataset_size))
split = int(np.floor(validation_split * dataset_size))
if shuffle_dataset :
    np.random.seed(random_seed)
    np.random.shuffle(indices)
train_indices, val_indices = indices[split:], indices[:split]

# Creating PT data samplers and loaders:
train_sampler = SubsetRandomSampler(train_indices)
valid_sampler = SubsetRandomSampler(val_indices)

train_loader = torch.utils.data.DataLoader(dataset, batch_size=batch_size, 
                                           sampler=train_sampler)
validation_loader = torch.utils.data.DataLoader(dataset, batch_size=batch_size,
                                                sampler=valid_sampler)

# Usage Example:
num_epochs = 10
for epoch in range(num_epochs):
    # Train:   
    for batch_index, (faces, labels) in enumerate(train_loader):
        # ...

Source: stackoverflow.com

Similar codes

0 vote147 views1 answer
Can i change color of text in jupyter notebook
Python
0 vote173 views1 answer
Convert tensorflow checkpoint to pytorch
Python
0 vote182 views1 answer
Difference in django project view and app view
Python
0 vote153 views1 answer
Na in python
Python
1 vote164 views1 answer
Discord.py "NameError: name 'has_permissions' is not defined"
Python
0 vote127 views1 answer
Python which __divs__ are there
Python
97 votes153 views6 answers
Download python
Python
0 vote194 views1 answer
'datetime.date' object has no attribute 'split'
Python
0 vote161 views1 answer
User registration
Python
0 vote154 views1 answer
Django querset group by sum
Python