CNN | convnet for EEG analysis | Dataset library
kandi X-RAY | CNN Summary
kandi X-RAY | CNN Summary
convnet for EEG analysis
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Top functions reviewed by kandi - BETA
- Load train and validation set
- Load data from file
- Get training and validation files
- Returns the next batch
- Restart the RNG
CNN Key Features
CNN Examples and Code Snippets
def create_model(input_shape, output_shape):
# building the model
model = Sequential()
model.add(Conv2D(filters=32, kernel_size=(5, 5), padding="same", input_shape=input_shape))
model.add(Activation("relu"))
model.add(Conv2D(fil
def main():
X, Y = getImageData()
model = CNN(
convpool_layer_sizes=[(20, 5, 5), (20, 5, 5)],
hidden_layer_sizes=[500, 300],
)
model.fit(X, Y)
Community Discussions
Trending Discussions on CNN
QUESTION
I am working on a CNN Sentiment analysis machine learning model which uses the IMDb dataset provided by the Torchtext library. On one of my lines of code
vocab = Vocab(counter, min_freq = 1, specials=('\', '\', '\', '\'))
I am getting a TypeError for the min_freq argument even though I am certain that it is one of the accepted arguments for the function. I am also getting UserWarning Lambda function is not supported for pickle, please use regular python function or functools partial instead. Full code
...ANSWER
Answered 2022-Apr-04 at 09:26As https://github.com/pytorch/text/issues/1445 mentioned, you should change "Vocab" to "vocab". I think they miss-type the legacy-to-new notebook.
correct code:
QUESTION
I want to set proxies to my crawler. I'm using requests module and Beautiful Soup. I have found a list of API links that provide free proxies with 4 types of protocols.
All proxies with 3/4 protocols work (HTTP, SOCKS4, SOCKS5) except one, and thats proxies with HTTPS protocol. This is my code:
...ANSWER
Answered 2021-Sep-17 at 16:08I did some research on the topic and now I'm confused why you want a proxy for HTTPS.
While it is understandable to want a proxy for HTTP, (HTTP is unencrypted) HTTPS is secure.
Could it be possible your proxy is not connecting because you don't need one?
I am not a proxy expert, so I apologize if I'm putting out something completely stupid.
I don't want to leave you completely empty-handed though. If you are looking for complete privacy, I would suggest a VPN. Both Windscribe and RiseUpVPN are free and encrypt all your data on your computer. (The desktop version, not the browser extension.)
While this is not a fully automated process, it is still very effective.
QUESTION
I'm trying to make a face detection model with CNN. I used codes that I made for number detection. When I use number images, program work. But, when I use my face images, I get an error that is:
Unexpected result of train_function
(Empty logs). Please use Model.compile(..., run_eagerly=True)
, or tf.config.run_functions_eagerly(True)
for more information of where went wrong, or file a issue/bug to tf.keras
.
ANSWER
Answered 2022-Jan-24 at 10:12Your input images have a shape of (32,32,3)
whil you first conv2D layer sets the inputshape to (32,32,1)
. Most likely your numbers have only 1 channel since they are grayscale, while you face images have 3 color channels.
change:
QUESTION
I have created a working CNN model in Keras/Tensorflow, and have successfully used the CIFAR-10 & MNIST datasets to test this model. The functioning code as seen below:
...ANSWER
Answered 2021-Dec-16 at 10:18If the hyperspectral dataset is given to you as a large image with many channels, I suppose that the classification of each pixel should depend on the pixels around it (otherwise I would not format the data as an image, i.e. without grid structure). Given this assumption, breaking up the input picture into 1x1 parts is not a good idea as you are loosing the grid structure.
I further suppose that the order of the channels is arbitrary, which implies that convolution over the channels is probably not meaningful (which you however did not plan to do anyways).
Instead of reformatting the data the way you did, you may want to create a model that takes an image as input and also outputs an "image" containing the classifications for each pixel. I.e. if you have 10 classes and take a (145, 145, 200) image as input, your model would output a (145, 145, 10) image. In that architecture you would not have any fully-connected layers. Your output layer would also be a convolutional layer.
That however means that you will not be able to keep your current architecture. That is because the tasks for MNIST/CIFAR10 and your hyperspectral dataset are not the same. For MNIST/CIFAR10 you want to classify an image in it's entirety, while for the other dataset you want to assign a class to each pixel (while most likely also using the pixels around each pixel).
Some further ideas:
- If you want to turn the pixel classification task on the hyperspectral dataset into a classification task for an entire image, maybe you can reformulate that task as "classifying a hyperspectral image as the class of it's center (or top-left, or bottom-right, or (21th, 104th), or whatever) pixel". To obtain the data from your single hyperspectral image, for each pixel, I would shift the image such that the target pixel is at the desired location (e.g. the center). All pixels that "fall off" the border could be inserted at the other side of the image.
- If you want to stick with a pixel classification task but need more data, maybe split up the single hyperspectral image you have into many smaller images (e.g. 10x10x200). You may even want to use images of many different sizes. If you model only has convolution and pooling layers and you make sure to maintain the sizes of the image, that should work out.
QUESTION
I'm applying a CNN to classify a given dataset.
My function:
...ANSWER
Answered 2021-Nov-25 at 17:50As @jodag suggests, using DataLoaders is a good idea.
I have a snippet of that I use for some of my CNN in Pytorch
QUESTION
I'm implementing a CNN model to detect Moire pattern on images by using Haar Wavelet decomposition. To generate the image data for training, I implemented a customize generation in the following code:
...ANSWER
Answered 2021-Nov-22 at 12:05First, call model.compile()
if you really miss it.
Second, check x.shape. I made mock data generator, and it works fine.
QUESTION
I'm currently trying to train a custom model with tensorflow to detect 17 landmarks/keypoints on each of 2 hands shown in an image (fingertips, first knuckles, bottom knuckles, wrist, and palm), for 34 points (and therefore 68 total values to predict for x & y). However, I cannot get the model to converge, with the output instead being an array of points that are pretty much the same for every prediction.
I started off with a dataset that has images like this:
each annotated to have the red dots correlate to each keypoint. To expand the dataset to try to get a more robust model, I took photos of the hands with various backgrounds, angles, positions, poses, lighting conditions, reflectivity, etc, as exemplified by these further images:
I have about 3000 images created now, with the landmarks stored inside a csv as such:
I have a train-test split of .67 train .33 test, with the images randomly selected to each. I load the images with all 3 color channels, and scale the both the color values & keypoint coordinates between 0 & 1.
I've tried a couple different approaches, each involving a CNN. The first keeps the images as they are, and uses a neural network model built as such:
...ANSWER
Answered 2021-Oct-18 at 14:45Usually, neural networks will have a very hard time to predict exact coordinates of landmarks. A better approach is probably a fully convolutional network. This would work as follows:
- You omit the dense layers at the end and thus end up with an output of (m, n, n_filters) with m and n being the dimensions of your downsampled feature maps (since you use maxpooling at some earlier stage in the network they will be lower resolution than your input image).
- You set n_filters for the last (output-)layer to the number of different landmarks you want to detect plus one more to indicate no landmark.
- You remove some of the max pooling such that your final output has a fairly high resolution (so the earlier referenced m and n are bigger). Now your output has shape mxnx(n_landmarks+1) and each of the nxm (n_landmark+1)-dimensional vectors indicate which landmark is present as the position in the image that corresponds to the position in the mxn grid. So the activation for your last output convolutional layer needs to be a softmax to represent probabilities.
- Now you can train your network to predict the landmarks locally without having to use dense layers.
This is a very simple architecture and for optimal results a more sophisticated architecture might be needed, but I think this should give you a first idea of a better approach than using the dense layers for the prediction.
And for the explanation why your network does predict the same values every time: This is probably, because your network is just not able to learn what you want it to learn because it is not suited to do so. If this is the case, the network will just learn to predict a value, that is fairly good for most of the images (so basically the "average" position of each landmark for all of your images).
QUESTION
Case in point: using latest Chrome version on Android 11 on Pixel 3a.
Text scaling is set to 100% in browser settings. If I navigate to CNN.COM the font is rather too small for me to read. If I change the Text scaling to 150% the font becomes larger and I can read it easily. This is, IMO, how it is supposed to work.
On the other hand if I navigate to APNEWS.COM changes to Text scaling make no difference whatsoever.
Can someone explain what the difference between these sites is as far as Text scaling goes? It is probably some setting in CSS.
Or, to reduce it to a very simple page that doesn't respect font scaling:
...ANSWER
Answered 2021-Aug-29 at 02:50Now you will have to excuse my answer, as this can be a bit complicated, but here we go:
So developers do have options to add in CSS properties such as 'text-size-adjust' to control the text in a way where it can be easy to read. Now that attribute may not work with some browsers such as: Firefox, Internet Explorer, and Safari.
Now I did take a look at both sites and it looks like they have 'text-size-adjust' and the webkit version of that too. So I would also come to a conclusion that the mobile responsiveness of text varies on the browser itself too.
QUESTION
When using multiple GPUs to perform inference on a model (e.g. the call method: model(inputs)) and calculate its gradients, the machine only uses one GPU, leaving the rest idle.
For example in this code snippet below:
...ANSWER
Answered 2021-Jul-16 at 07:14It is supposed to run in single gpu (probably the first gpu, GPU:0
) for any codes that are outside of mirrored_strategy.run()
. Also, as you want to have the gradients returned from replicas, mirrored_strategy.gather()
is needed as well.
Besides these, a distributed dataset must be created by using mirrored_strategy.experimental_distribute_dataset
. Distributed dataset tries to distribute single batch of data across replicas evenly. An example about these points is included below.
model.fit()
, model.predict()
,and etc... run in distributed manner automatically just because they've already handled everything mentioned above for you.
Example codes:
QUESTION
I have probem with this code , why ?
the code :
...ANSWER
Answered 2021-Apr-09 at 09:33Use
from tensorflow.keras.
instead of from keras.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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Install CNN
You can use CNN like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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