36 lines
1.5 KiB
Python
36 lines
1.5 KiB
Python
# Combines 2 pareto fromtier obtained from the separability test into a new one.
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from get_pareto import Point, ParetoSet
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from S_get_symbolic_expr_error import get_symbolic_expr_error
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from sympy.parsing.sympy_parser import parse_expr
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import numpy as np
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import matplotlib.pyplot as plt
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import os
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from os import path
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from sympy import Symbol, lambdify, N
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from get_pareto import Point, ParetoSet
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def combine_pareto(input_data,PA1,PA2,idx_list_1,idx_list_2,PA,sep_type = "+"):
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possible_vars = ["x%s" %i for i in np.arange(0,30,1)]
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PA1 = np.array(PA1.get_pareto_points()).astype('str')
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PA2 = np.array(PA2.get_pareto_points()).astype('str')
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for i in range(len(PA1)):
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for j in range(len(PA2)):
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try:
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complexity = float(PA1[i][0])+float(PA2[j][0])
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# replace the variables from the separated parts with the variables reflecting the new combined equation
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exp1 = PA1[i][2]
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exp2 = PA2[j][2]
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for k in range(len(idx_list_1)-1,-1,-1):
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exp1 = exp1.replace(possible_vars[k],possible_vars[idx_list_1[k]])
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for k in range(len(idx_list_2)-1,-1,-1):
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exp2 = exp2.replace(possible_vars[k],possible_vars[idx_list_2[k]])
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new_eq = "(" + exp1 + ")" + sep_type + "(" + exp2 + ")"
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PA.add(Point(x=complexity,y=get_symbolic_expr_error(input_data,new_eq),data=new_eq))
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except:
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continue
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return PA
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