I am trying to do this tutorial for a machine learning class I am taking in college.
www.tensorflow.org/tutorials/keras/basic_classification
When it executes the lines
fashion_mnist = keras.datasets.fashion_mnist
(train_images, train_labels), (test_images, test_labels) = fashion_mnist.load_data()
it is taking forever to download the data. At the rate it is downloading, it is going to take a few days or weeks to download all of it. I am using a MacBook. My classmate is also using a MacBook and when he downloads the data it only takes a few seconds. Please help.
In my case the download was giving me an error. By digging into the error I was able to find the file in which the base URL was declared, which in my case was:
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/tensorflow_core/python/keras/datasets/fashion_mnist.py
At line 44 I have commented out the line:
# base = 'https://storage.googleapis.com/tensorflow/tf-keras-datasets/'
And declared a different base URL, which I had found looking into the documentation of the original dataset:
base = 'http://fashion-mnist.s3-website.eu-central-1.amazonaws.com/'
The download started immediately and gave no errors. Hope this helps.
Related
I was following this tutorial which comes with this notebook.
I plan to use Tensorflow for my project, so I followed this tutorial and added the line
tokenized_datasets = tokenized_datasets["train"].to_tf_dataset(columns=["input_ids"], shuffle=True, batch_size=16, collate_fn=data_collator)
to the end of the notebook.
However, when I ran it, I got the following error:
RuntimeError: Index put requires the source and destination dtypes match, got Float for the destination and Long for the source.
Why didn't this work? How can I use the collator?
The issue is not your code, but how the collator is set up. (It's set up to not use Tensorflow by default.)
If you look at this, you'll see that their collator uses the return_tensors="tf" argument. If you add this to your collator, your code for using the collator will work.
In short, your collator creation should look like
data_collator = DataCollatorForLanguageModeling(tokenizer, mlm_probability=0.15, return_tensors="tf")
This will fix the issue.
I'm working through an exercise in https://www.oreilly.com/library/view/hands-on-machine-learning/9781492032632/ and am finding unexpected behavior on my computer when I fetch a dataset. The following code returns
numpy.ndarray
on the author's Google Collab page, but returns
pandas.core.frame.DataFrame
on my local Jupyter notebook. As far as I know, my environment is using the exact same versions of libraries as the author. I can easily convert the data to a numPy array, but since I'm using this book as a guide for novices, I'd like to know what could be causing this discrepancy.
from sklearn.datasets import fetch_openml
mnist = fetch_openml('mnist_784', version=1)
mnist.keys()
type(mnist['data'])
The author's Google Collab is at the following link, scrolling down to the "MNIST" heading. Thanks!
https://colab.research.google.com/github/ageron/handson-ml2/blob/master/03_classification.ipynb#scrollTo=LjZxzwOs2Q2P.
Just to close off this question, the comment by Ben Reiniger, namely to add as_frame=False, is correct. For example:
mnist = fetch_openml('mnist_784', version=1, as_frame=False)
The OP has already made this change to the Colab code in the link.
The Google Colab output is being truncated. I've looked through the settings and I didn't see a limitation there. What is the best option to solve the problem?
I had the same problem and managed it by writing the output on a file on drive:
from google.colab import drive
drive.mount('/content/drive')
import os
os.chdir("/content/drive/")
with open('/content/drive/output.txt','w') as out:
out.write(' abcd \n')
I have the same issue currently, I found this link on medium, check the part "How do I use Colab for long training times/runs?"
So basically according to this article you need to store checkpoints on your drive and by using callbacks from Keras, you will be able to run it nonstop.
from keras.callbacks import *
filepath = "/content/gdrive/My Drive/MyCNN/epochs:{epoch:03d}-val_acc:{val_acc:.3f}.hdf5"
checkpoint = ModelCheckpoint(filepath, monitor='val_acc', verbose=1, save_best_only=True, mode='max')
callbacks_list = [checkpoint]
Other solution to solve this problem is according to my researches, you should put this code to your console but make sure that you save your progress to drive, because it will be terminated in 12 hours.
function ClickConnect() {
console.log("Working");
document
.querySelector('#top-toolbar > colab-connect-button')
.shadowRoot.querySelector('#connect')
.click()
}
setInterval(ClickConnect, 60000)
I am trying to work with the quite recently published tensorflow_dataset API to train a Keras model on the Open Images Dataset. The dataset is about 570 GB in size. I downloaded the data with the following code:
import tensorflow_datasets as tfds
import tensorflow as tf
open_images_dataset = tfds.image.OpenImagesV4()
open_images_dataset.download_and_prepare(download_dir="/notebooks/dataset/")
After the download was complete, the connection to my jupyter notebook somehow interrupted but the extraction seemed to be finished as well, at least all downloaded files had a counterpart in the "extracted" folder. However, I am not able to access the downloaded data now:
tfds.load(name="open_images_v4", data_dir="/notebooks/open_images_dataset/extracted/", download=False)
This only gives the following error:
AssertionError: Dataset open_images_v4: could not find data in /notebooks/open_images_dataset/extracted/. Please make sure to call dataset_builder.download_and_prepare(), or pass download=True to tfds.load() before trying to access the tf.data.Dataset object.
When I call the function download_and_prepare() it only downloads the whole dataset again.
Am I missing something here?
Edit:
After the download the folder under "extracted" has 18 .tar.gz files.
This is with tensorflow-datasets 1.0.1 and tensorflow 2.0.
The folder hierarchy should be like this:
/notebooks/open_images_dataset/extracted/open_images_v4/0.1.0
All the datasets have a version. Then the data could be loaded like this.
ds = tf.load('open_images_v4', data_dir='/notebooks/open_images_dataset/extracted', download=False)
I didn't have open_images_v4 data. I put cifar10 data into a folder named open_images_v4 to check what folder structure tensorflow_datasets was expecting.
The solution to this was to also use the "data_dir" parameter when initializing the dataset:
builder = tfds.image.OpenImagesV4(data_dir="/raid/openimages/dataset")
builder.download_and_prepare(download_dir="/raid/openimages/dataset")
This way the dataset is donwloaded and extracted in the same directory. Before, it was (for me unnoticeably) extracting to the default directory, which is under /home/.../. That's what caused the error, as there wasn't enough space left under my home directory.
After the extraction, the folder structure is exactly as Manoj-Mohan described.
Above solution haven't worked for me.
builder = tfds.builder(name='folder_name', data_dir=data_dir)
builder.download_and_prepare(download_dir="/home/...")
ds = builder.as_dataset()
I am trying to download data from Fashion MNIST, but it produces an error. Originally, it was downloading and working properly, but I had to terminate it because I had to turn off my computer. Once I opened the file up again, it gives me an error. I'm not sure what the problem is, but is it because I already downloaded some parts of the data once, and keras doesn't recognize that? I am using Jupyter notebook in a conda environment
Here is the link to the image:
https://i.stack.imgur.com/wLGDm.png
You have missed adding tf. to the line
fashion_mnist = keras.datasets.fashion_mnist
The below code works perfectly for me. Importing the fashion_mnist dataset has been outlined in tensorflow documention here.
Change your code to:
import tensorflow as tf
fashion_mnist = tf.keras.datasets.fashion_mnist
(train_images, train_labels), (test_images, test_labels) = fashion_mnist.load_data()
or, use the better way to do it below. This avoids creating an extra variable fashion_mnist:
import tensorflow as tf
(train_images, train_labels), (test_images, test_labels) = tf.keras.datasets.fashion_mnist.load_data()
I am using tensorflow 1.9.0, keras 2.2.2 and python 3.6.6 on Windows 10 x64 OS.
I know my pc well, I can't download anything larger than 2.7 MB (in terminal), due to WinError 8.
So I manually downloaded all packs from storage.google (since some packs are 25 MB).
Check the packs:
then I paste all packs to \datasets\fashion-mnist
The next time u run your code, it should be fixed.
Note : If u have VScode then just CTRL and click the link, then you can download it easily.
I had an error regarding the cURL connection, and by looking into the error message I was able to track the file where the URL was declared. In my case it was:
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/tensorflow_core/python/keras/datasets/fashion_mnist.py
At line 44 I have commented out the line:
# base = 'https://storage.googleapis.com/tensorflow/tf-keras-datasets/'
And declared a different base URL, which I had found looking into the documentation of the original dataset:
base = 'http://fashion-mnist.s3-website.eu-central-1.amazonaws.com/'
The download started immediately and gave no errors. Hope this helps.
This is because for some reason you have an incomplete download for the MNIST dataset.
You will have to manually delete the downloaded folder which usually resides in ~/.keras/datasets or any path specified by you relative to this path, in your case MNIST_data.
Go to : C:\Users\Username.keras\datasets
and then Delete the Dataset that you want to redownload or has the error
You should be good to go!
You can also manually add print for the path from which it is taking dataset ..
Ex: print(paths) in file fashion_mnist.py
with gzip.open(paths[3], 'rb') as imgpath:
print(paths) #debug print in fashion_mnist.py
x_test = np.frombuffer(
imgpath.read(), np.uint8, offset=16).reshape(len(y_test), 28, 28)
& from this path, remove the files & this will start to download fresh data ..
Change The base address with 'http://fashion-mnist.s3-website.eu-central-1.amazonaws.com/' as described previously. It works for me.
I was getting error of Downloading data from https://storage.googleapis.com/tensorflow/tf-keras-datasets/mnist.npz
Traceback (most recent call last):
File "C:\Users\AsadA\AppData\Local\Programs\Python\Python38\lib\site-packages\numpy\lib\npyio.py", line 448, in load
return pickle.load(fid, **pickle_kwargs)
EOFError: Ran out of input
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Users\AsadA\AppData\Local\Programs\Python\Python38\lib\site-packages\numpy\lib\npyio.py", line 450, in load
raise IOError(
OSError: Failed to interpret file 'C:\\Users\\AsadA\\.keras\\datasets\\mnist.npz' as a pickle"**
GO TO FILE C:\Users\AsadA\AppData\Local\Programs\Python\Python38\Lib\site-packages\tensorflow\python\keras\datasets (In my Case) and follow the instructions: