conv_opt | Python package for linear and quadratic programming | Robotics library
kandi X-RAY | conv_opt Summary
kandi X-RAY | conv_opt Summary
conv_opt is a high-level Python package for solving linear and quadratic optimization problems using multiple open-source and commercials solvers including Cbc, CVXOPT, FICO XPRESS, GLPK, Gurobi, IBM CPLEX, MINOS, Mosek, quadprog, SciPy, and SoPlex.
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Top functions reviewed by kandi - BETA
- Load a convopt model
- Returns the type of the model
- Return the number of metabolites in the list
- Solve the problem
- Convert to solver
- Unpack a result
- Load the model
- Make the primal and slack
- Solve the model
- Set solver options
- Load the objective function
- Loads variables from the given convopt model
- Create a model from a ConvOptModel
- Load model
- Loads the model
- Returns statistics about the problem
conv_opt Key Features
conv_opt Examples and Code Snippets
Community Discussions
Trending Discussions on conv_opt
QUESTION
So I made the simplest model I could (a perceptron/autoencoder) which (aside from input generation) is the following:
...ANSWER
Answered 2017-Dec-28 at 18:24I think the reason is that when you add the tf.train.AdamOptimizer(0.005).minimize(cost)
op, it is implicitly assumed that you optimize over all trainable variables (because you didn't specify otherwise).
Therefore, you need to know the values of these variables and of all the intermediate tensors which take part in the calculation of cost
, including the gradients (which are tensors too and are implicitly added to the computational graph). Now lets count the variables and tensors from perceptron
:
W
b
tf.reshape(x, [-1,N])
tf.matmul( ..., W)
- its gradient with respect to the first argument.
- its gradient with respect to the second argument.
tf.add(..., b, name="y")
- its gradient with respect to the first argument.
- its gradient with respect to the second argument.
tf.nn.sigmoid(y, name="sigmoid")
- its gradient.
tf.reshape(act, [-1, 64, 64, 3], name="yhat")
I'm not actually 100% sure that this is how the accounting is done, but you get the idea of where the number 12 could have come from.
Just as an exercise, we can see that this type of accounting also explains where the number 9 comes from in your chart:
x - yhat
- its gradient with respect to the first argument
- its gradient with respect to the second argument
np.square(...)
- its gradient
tf.reduce_mean(..., axis=1)
- its gradient
tf.reduce_mean( sq_error, name="cost" )
- its gradient
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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Install conv_opt
Install Python and pip
Optionally, install the Cbc/CyLP, FICO XPRESS, IBM CPLEX, Gurobi, MINOS, Mosek, and SoPlex solvers. Please see our detailed instructions.
Install this package. Install the latest release from PyPI: pip install conv_opt Install the latest revision from GitHub: pip install git+https://github.com/KarrLab/conv_opt.git#egg=conv_opt Support for the optional solvers can be installed using the following options: pip install conv_opt[cbc,cplex,gurobi,minos,mosek,soplex,xpress]
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