python - Finding best curve fit with AIC -

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i have quite sophisticated problem(for me). have write code calculate interpolation given data set.after calculate akaike information criterium check interpolation suite best.

looks that:

    polyfit=np.polyfit(x,y,5)  # x,y data set , 5 root of polynomial     poly1d=np.poly1d(polyfit)         print poly1d  #show final polynomial  my=[] in x:  x_=poly1d(i) my.append(x_) #calculate list of values   def aic(i,j):  in y: j in my:     rss=(i-j)**2  aic=36-np.log(rss)  print aic

and don't code becouse if want change root of polynomial have change code. know have use loop in begining like:

for in xrange(40):     polyfit=np.polyfit(x,y,i)

but can't figure out how save of polynomials list.if knew use calculate def aic() root,and find best curve fit data. please guys,its bothering me 2 weeks already.if there not clear you,please ask.


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