afdee1c/symbolic-regression
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Silviu Marian Udrescu 2020-05-15 04:38:23 -04:00 • committed by GitHub
parent 0f6d6bd84b
commit ed29da5fce
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1 changed files with 5 additions and 2 deletions
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Code/S_get_symbolic_expr_error.py
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@ -32,7 +32,10 @@ def get_symbolic_expr_error(pathdir,filename,expr):
return 1000000
else:
try:
return np.sqrt(np.mean((f(*real_variables)[good_idx]-data[good_idx][:,-1])**2))/np.sqrt(np.mean(data[good_idx][:,-1]**2))
#return np.sqrt(np.mean((f(*real_variables)[good_idx]-data[good_idx][:,-1])**2))/np.sqrt(np.mean(data[good_idx][:,-1]**2))
return np.mean(np.log2(1+abs(f(*real_variables)[good_idx]-data[good_idx][:,-1])*2**30))
except:
# use this for the case in which the expression is just one number (i.e. not array)
return np.sqrt(np.mean((f(*real_variables)-data[:,-1])**2))/np.sqrt(np.mean(data[:,-1]**2))
#return np.sqrt(np.mean((f(*real_variables)-data[:,-1])**2))/np.sqrt(np.mean(data[:,-1]**2))
return np.mean(np.log2(1+abs(f(*real_variables)-data[:,-1])*2**30))