evolution | sandbox game/simulator that demonstrates machine learning | Machine Learning library
kandi X-RAY | evolution Summary
kandi X-RAY | evolution Summary
A sandbox game/simulator that demonstrates machine learning with evolutionary algorithms. Inspired by Karl Sims' Evolving Virtual Creatures.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of evolution
evolution Key Features
evolution Examples and Code Snippets
def evolution_strategy(
f,
population_size,
sigma,
lr,
initial_params,
num_iters):
# assume initial params is a 1-D array
num_params = len(initial_params)
reward_per_iteration = np.zeros(num_iters)
params = initial_p
def evolution_strategy(
f,
population_size,
sigma,
lr,
initial_params,
num_iters):
# assume initial params is a 1-D array
num_params = len(initial_params)
reward_per_iteration = np.zeros(num_iters)
params = initial_p
def evolution_strategy(
f,
population_size,
sigma,
lr,
initial_params,
num_iters):
# assume initial params is a 1-D array
num_params = len(initial_params)
reward_per_iteration = np.zeros(num_iters)
params = initial_p
Community Discussions
Trending Discussions on evolution
QUESTION
I am making a simulation with C (for perfomance) that (currently) uses recursion and mallocs (generated in every step of the recursion). The problem is that I am not being able to free the mallocs anywhere in the code, without having the wrong final output. The code consist of two functions and the main function:
evolution(double initial_energy)
ANSWER
Answered 2021-Jun-13 at 04:47You're supposed to free memory right after the last time it will be used. In your program, after the while
loop in recursion
, Energy
isn't used again, so you should free it right after that (i.e., right before return event_counter;
).
QUESTION
I recently saw that Swift had introduced concurrency support with the Actor model in Swift 5.5. This model enables safe concurrent code to avoid data races when we have a shared, mutable state.
I want to avoid main thread data races in my app's UI. For this, I am wrapping DispatchQueue.main.async
at the call site wherever I set a UIImageView.image
property or a UIButton
style.
ANSWER
Answered 2021-Jun-10 at 15:19Actor isolation and re-entrancy is now implemented in the Swift stdlib. So, Apple recommends using the model for concurrent logic with many new concurrency features to avoid data races. Instead of lock-based synchronisation (lots of boilerplate), we now have a much cleaner alternative. There are a couple of solutions here (see below).
Solution 1The simplest possible. Apple have made the process much cleaner using the @MainActor
method annotation:
QUESTION
Here is the project.
It should show an interactive grid on screen, with some buttons and an explanation on how to best interact with the system, but I suppose I have done something wrong. It works on my local environment.
JS:
...ANSWER
Answered 2021-Apr-24 at 12:24So here is the solution, what was necessary was adding the correct Pen Settings.
QUESTION
Can anyone tell me what is wrong with this code? It is from https://jakevdp.github.io/blog/2012/09/05/quantum-python/ . Everything in it worked out except the title of the plot.I can't figure it out.
but when the code is run, it polts this
Here is the code given:-
...ANSWER
Answered 2021-Jun-04 at 18:23The problem is resolved when blit=False, though it may slow down your animation.
Just quoting from a previous answer:
"Possible solutions are:
Put the title inside the axes.
Don't use blitting"
See: How to update plot title with matplotlib using animation?
You also need ffmpeg installed. There are other answers on stackoverflow that help you through that installation. But for this script, here are my recommended new lines you need to add, assuming you're using Windows:
QUESTION
I am working on a simple canvas with Chart.js (version 3.x) that simply displays an evolution of price. The X axis is used for the time and the Y axis for the percentage of evolution. I have managed to do this but now, I would like to add a bit of style.
My objective is to add some space between the mark ticks and the X axis.
I have used the chart.js styling documentation to help me, but I did not found anything that worked how I want.
Here is the result that I have and the associated code :
...ANSWER
Answered 2021-Jun-02 at 10:37So I have found a solution, for anyone interested in how :
By checking this chart.js doc, you can find an option called offset which will create as explained an extra space.
Then to get the exact result I wanted, you hide the X axis.
Which gives us this :
QUESTION
I'm trying to follow the Logging in Python Tutorial in PyCharm Professional.
I'm using a Virtualenv
environment with Python 3.9.5 in this tutorial. Everything works fine, but when I press "Check" button in the Task Description panel, I get this error:
Failed to launch checking. For more information, see the Troubleshooting guide.
But when I switch to Run panel, all tests are passed with these outputs:
...ANSWER
Answered 2021-May-31 at 12:53Do you have the Chinese (Simplified) Language Pack enabled in your PyCharm Professional 2021.1.1? If so, please try disabling it and opening the course once again.
There's a compatibility issue between mentioned language pack and Python courses in the EduTools plugin, and the developers are currently investigating it.
I would advise adding this issue to your watch list to be 100% sure that you won't miss any updates.
QUESTION
I'm stuck since a couple days and tried most of the answer given to similar questions on this site.
Before starting I'd like to point out that I am working via ssh and can only edit the code via nano (not my choice...)
My problem is the following:
I am using MariaDB to store the raspberry pi CPU temperature along a camera temperature to plot the temperature evolution. I have an error when trying to insert the values in the data base.
I have the following table in cpu_tempDB
...ANSWER
Answered 2021-May-29 at 08:58You need to put arguments into a tuple:
QUESTION
Let's say I have a pytorch-model describing the evolution of some multidimensional system based on its own state x and an external actuator u. So x_(t+1) = f(x_t, u_t) with f being the artificial neural network from pytorch.
Now i want to solve a dynamic optimization problem to find an optimal sequence of u-values to minimize an objective that depends on x. Something like this:
min sum over all timesteps phi(x_t)
s.t.: x_(t+1) = f(x_t, u_t)
Additionally I also have some upper and lower bounds on some of the variables in x.
Is there an easy way to do this using a dynamic optimization toolbox like pyomo or gekko?
I already wrote some code that transforms a feedforward neural network to a numpy-function which can then be passed as a constraint to pyomo. The problem with this approach is, that it requires significant reprogramming-effort every time the structure of the neural network changes, so quick testing becomes difficult. Also integration of recurrent neural networks gets difficult because hidden cell states would have to be added as additional variables to the optimization problem.
I think a good solution could be to do the function evaluations and gradient calculations in torch and somehow pass the results to the dynamic optimizer. I'm just not sure how to do this.
Thanks a lot for your help!
...ANSWER
Answered 2021-May-27 at 13:39Tensorflow or Pytorch models can't be directly integrated into the GEKKO at this moment. But, I believe you can retrieve the derivatives from Tensorflow and Pytorch, which allows you to pass them to the GEKKO.
There is a GEKKO Brain module and examples in the link below. You can also find an example that uses GEKKO Feedforward neural network for dynamic optimization.
GEKKO Brain Feedforward neural network examples
MIMO MPC example with GEKKO neural network model
Recurrent Neural Network library in the GEKKO Brain module is currently being developed, which allows using all the GEKKO's dynamic optimization functions easily.
In the meantime, you can use a sequential method by wrapping the TensorFlow or PyTorch models in the available optimization solver such as scipy optimization module.
Check out the below link for a dynamic optimization example with Keras LSTM model and scipy optimize.
QUESTION
I am trying to return the array of all the intersected array elements.
I got 2 arrays.
The array from api and the filter condition array.
Array from api is this
...ANSWER
Answered 2021-May-26 at 09:55The following line taken from your code:
QUESTION
enter image description hereI want to click the button called "바카라 멀티플레이" which locates center of the site. I switched into iframe, however it seems to be not detecting the button. How can I?
...ANSWER
Answered 2021-May-26 at 03:33For the login action use the below xpaths. This way your code will look neat.
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