AI: Difference between revisions

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** [https://tensorflow.rstudio.com/keras/ R interface to Keras]. I followed the instruction for the installation but got an error of ''illegal operand''. The solution is to use an older version of tensorflow; see [https://github.com/rstudio/tensorflow/issues/228 here]. ''library(keras); install_keras(tensorflow = "1.5")''  (Ubuntu 16.04, Phenom(tm) II X6 1055T)
** [https://tensorflow.rstudio.com/keras/ R interface to Keras]. I followed the instruction for the installation but got an error of ''illegal operand''. The solution is to use an older version of tensorflow; see [https://github.com/rstudio/tensorflow/issues/228 here]. ''library(keras); install_keras(tensorflow = "1.5")''  (Ubuntu 16.04, Phenom(tm) II X6 1055T)
** https://rviews.rstudio.com/2018/04/03/r-and-tensorflow-presentations/, [https://beta.rstudioconnect.com/ml-with-tensorflow-and-r/#1 Slides]
** https://rviews.rstudio.com/2018/04/03/r-and-tensorflow-presentations/, [https://beta.rstudioconnect.com/ml-with-tensorflow-and-r/#1 Slides]
** relu(x) = max(0, x)
* [https://hpc.nih.gov/docs/deep_learning.html Deep Learning on Biowulf]
* [https://hpc.nih.gov/docs/deep_learning.html Deep Learning on Biowulf]
* Raspberry Pi
* Raspberry Pi
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** [https://www.manning.com/books/deep-learning-with-python Deep Learning with Python] by François Chollet, 2017 (available on safaribooksonline)
** [https://www.manning.com/books/deep-learning-with-python Deep Learning with Python] by François Chollet, 2017 (available on safaribooksonline)
** [https://github.com/janishar/mit-deep-learning-book-pdf Deep Learning] by Ian Goodfellow and Yoshua Bengio and Aaron Courville
** [https://github.com/janishar/mit-deep-learning-book-pdf Deep Learning] by Ian Goodfellow and Yoshua Bengio and Aaron Courville
* Tensor operations:
** relu(x) = max(0, x)
** Each neural layer from our first network example transforms its input data:'''output = relu(dot(W, input) + b)''' where  W and b are the ''weights'' or ''trainable parameters'' of the layer.
* Training process
*# Draw a batch of X and Y
*# Run the network on x (a step called the forward pass) to obtain predictions y_pred.
*# Compute the loss of the network on the batch
*# Update all weights of the network in a way that slightly reduces the loss on this batch.
* Derivative of a tensor operation: the gradient
** Define loss_value = f(W) = dot(W, x)
** W1 = W0 - step * gradient(f)(W0)
* Stochastic gradient descent
* Deep Learning Glossary
* Deep Learning Glossary
** http://www.wildml.com/deep-learning-glossary/
** http://www.wildml.com/deep-learning-glossary/

Revision as of 11:49, 31 December 2018

Applications

TensorFlow

PyTorch

An R Shiny app to recognize flower species