All Questions
Tagged with scipy-optimize-minimize numpy
43 questions
1
vote
1
answer
84
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Applying scipy.minimize to Pandas dataframe with parameters
I have a function defined by f(x_0, x_1) = a(x_1 - x_0^2)^2 + (b - x_0)^2, where a and b are some parameters:
def f(x):
return a*(x[1]-x[0]**2)**2+(b-x[0])**2
where x=np.array([x_0,x_1]) is a numpy ...
- 580
0
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0
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101
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`scipy.optimize.minimize` gives different results on GCP and Mac
SciPy's minimize() gives different results on different machines:
sp.optimize.minimize(cost_function, x_init, bounds=x_bounds, args=args_in, method='SLSQP', options={'maxiter': sim_config['maxiter'], '...
- 71
1
vote
2
answers
79
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Fitting two curves with a variable number of parameters using `scipy.optimize.least_squares()`
I'm writing code to fit parameters of related pairs of functions from a family using the scipy.optimize.least_squares() function and it seems that the test parameters are not being passed to the ...
- 121
1
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0
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97
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SciPy optimization for FEA truss structure
I am trying to optimize the weight of a truss structure by changing the areas. I have this (shortened/verified code for FEA truss) where x is a array of element areas:
stresses = np.zeros(10)
def FEA(...
- 45
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1
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85
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pH equilibria optimization leads to numerical instability
I'm creating a pH equilibrium calculator. Starting with compositions of acids / bases the calculator should come up with the equilibrated concentrations of each component, based on physical constants. ...
- 59
-1
votes
1
answer
159
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Assistance in setting up a custom method for Scipy Basinhopping
I'm trying to set a custom method for the local minimization. From my understanding of basinhopping, you start with an initial starting condition, minimize using a local method, then use basinhopping ...
- 613
1
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1
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68
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SciPy's scipy.optimize.minimize not obeying constraints
I'm trying to fit a parabola using SciPy's optimize.minimize to some scattered data according to some constraints: the area under the curve and that the curve passes through the initial and end points ...
- 166
0
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0
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229
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TypeError: objective() takes 1 positional argument but 2 were given, in scipy.optimize, minimize function
I want to get the optimal value of alpha that balance the risk and the cost.(There are alpha_risk, alpha_cost, and risk_cost function given). Would set this problem as to minimize risk for a given ...
- 13
1
vote
0
answers
51
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Minimizing second input in scipy.minimize_scalar (with first one passed as an argument)
I have defined a function that I want to minimize using minimize_scalar, this function func(a,b) has two inputs and I want to pass the first one as an argument, while default for it is the second.
...
- 11
2
votes
2
answers
101
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Curve fitting: How to optimize x_value model for curve fitting in python
I am trying to fit an exponential curve into my data. However, I am having some trouble defining the x_value model properly in order to have a representative curve-fit to the data. I would think that ...
- 51
0
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20
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Scipmy minimize is passing wrong args to my objective function
I am using scipy=1.2.1, python=3.6, numpy=1.16.3, I have an object function defined like so.
def func(arg0,arg1=0,arg2='default'):
print('Args for objective function:',arg0,arg1,arg2)
.
.
.
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0
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0
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218
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Constrained Optimization Problem in Scipy: boolean index did not match indexed array along dimension 0
I'm having a constrained optimization problem, which i want to solve using the scipy.optimize package.
from scipy import optimize as opt
import numpy as np
def f(x):
return (x[0]-5)**2 + (x[1]-6)**...
0
votes
1
answer
932
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ValueError: `f0` passed has more than 1 dimension
Dimension error appears when trying to call minimize function
import numpy as np
import math
import scipy
from scipy import optimize
from scipy.optimize import minimize, line_search
x1=[1,2,1] ; y1=0
...
0
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1
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1k
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How to use scipy minimization with GPU in google collab?
I had to change my runtime type to GPU in collab as otherwise, the RAM was crashing. However, when I use GPU I am getting an error while executing the scipy minimization. The error is as follows :-
---...
- 395
0
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0
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2k
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dimension error with scipy optimize.minimize
I want to minimise the objective function: objective_function_2() subject to the inequality constraints 69 < T(x) < 71. The objective of the optimisation is to find the set of Fourier series ...
