MyCNN | simple implementation of CNN | Machine Learning library
kandi X-RAY | MyCNN Summary
kandi X-RAY | MyCNN Summary
a simple implementation of CNN(Convolutional neural network) by C++
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QUESTION
I want to optimize hyperparams of CNN model for the image classification tasks (multi- class). To do so, I used gridSearchCV
from sklearn
but I always have bunch of warnings and values error as follow:
ANSWER
Answered 2020-Jul-07 at 14:14I suggest you can use Bayesian optimization from bayes_opt
which is much more efficient than GridSearchCV
and perform fast. Here is the quick example of how you can use Bayesian optimization:
QUESTION
in tensorflow, I intend to tune hyperparams in pre-trained CNN for the image classification tasks. To do so, I used a pre-trained model like vgg16
to extract features and used extracted embedded features as inputs for convolutional neural net (CNN). Basically, I place CNN on the top of the pre-trained model for training. I am trying to optimize hyperparameter like batch_size, epochs, drop-rate
, using GridSeatchCV
, but I got the following type error:
ANSWER
Answered 2020-Jun-29 at 18:09For multiclass labels to work with sklearn GridSearchCV
, the labels should be not be one-hot-encoded. They should be 1d or column vector containing more than two discrete values. Check the docs for representations.
So we have to convert one-hot-encoded targets to 1D and which in turn will need us to change the loss function to sparse_categorical_crossentropy
Sample code:
QUESTION
I am trying to implement the Keras libraries for Convolutional Neural Networks on my Spyder IDE using Anaconda as such:
...ANSWER
Answered 2020-Apr-21 at 03:46This is just a warning. Have you tried running your CNN?
Here is a Github issue that talks about what you are seeing
QUESTION
I have a CNN, takes in an image, outs a single value - an angle. The data set is made of (x = image, y = angle) couples.
I want the network for each image, to predict an angle.
I have found this suggestion: https://stats.stackexchange.com/a/218547 But I can't seem to understand how to translate it into a working Tensorflow in Python code.
...ANSWER
Answered 2018-Sep-19 at 15:31That is going in the right direction, but the idea is that, instead of having MyCNN
produce a single angle value for each example, produce two values. So if the return value of MyCNN
is currently something with shape like (None,)
or (None, 1)
, you should change it to (None, 2)
- that is, the last layer should have one more output. If you have doubts about how to do this please provide more details about the body of MyCNN
.
Then you would just have:
QUESTION
I have a Keras CNN model that I converted to CoreML using coremltools. It works perfectly on simulator but not on the iPhone X. It crashes just on initialization:
...ANSWER
Answered 2019-Feb-10 at 12:25You can set it during initialization by passing in an MLModelConfiguration
object.
But it's probably a good idea to make your model smaller. It sounds like this is just way too big for a mobile phone.
QUESTION
I have CNN model which has 4 output nodes, and I am trying to compute the confusion matrix so that i can know the individual class accuracy. I am able to compute the overall accuracy.
In the link here, Igor Valantic gave a function which can compute the confusion matrix variables.
it gives me an error at correct_prediction = tf.nn.in_top_k(logits, labels, 1, name="correct_answers")
and the error is TypeError: DataType float32 for attr 'T' not in list of allowed values: int32, int64
I have tried typecasting logits to int32 inside function mentioned def evaluation(logits, labels)
, it gives another error at computing correct_prediction = ...
as TypeError:Input 'predictions' of 'InTopK' Op has type int32 that does not match expected type of float32
how to calculate this confusion matrix ?
...ANSWER
Answered 2018-Nov-26 at 09:03You can simply use Tensorflow's confusion matrix. I assume y
are your predictions, and you may or may not have num_classes
(which is optional)
QUESTION
I have the tensorflow as the backend. I'm using the 3D convolution layer in keras. My final x training data is in shape (7,9,384,1), channel equals to 1, y training data is in shape (7,1,384,1). I keep getting this error when it runs model.fit().
I checked out most of the related problems posted online, but they all kind of focus on whether it's theaon or tensorflow as the backend. Some of them suggests expand dimensions, but still doesn't work and some other problems showed up.
According to the keras documents, 3D convolution should have a 5D input shape, and I am lacking the first dimension samples. I only have this one 3D data input (in shape 7,9,384), and I tried adding a 1 at the beginning of the input_shape parameter in the first layer, and it will cause another problem saying that I exceeded one dimension in the input shape.
Can anyone please take a look and tell me what's wrong? Thank you so much!
...ANSWER
Answered 2018-Mar-15 at 19:41The input_shape that a keras layer expects is per sample. So the shape of x should be one dimension bigger than input_shape. I don't know what the 7 means in your data but if this is the number of samples than you should not include it in input_shape, so input_shape becomes:
(9,boundIndex,1).
If you only train on 1 sample (for some reason) you could reshape x to:
(1,7,9,boundIndex,1)
Hope this helps!
QUESTION
I am getting the Exception when I attempt to update the record with "tableGateway" object:
...ANSWER
Answered 2017-Jun-27 at 13:23Make sure your database encoding type is UTF-8
.
QUESTION
I am trying to execute on a stored procedure in my database with the following code:
...ANSWER
Answered 2017-Feb-24 at 17:40You need to specify CommandType
which is Text
in default. You have to specify StoredProcedure
as CommandType
i.e.
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