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Code/S_combine_pareto.py

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