studies ML, Vol.111, PI 



1/ 



'W- 



Fia. IS 



F^.12. 



c.pt. 







^P- 



FLg.lS. 





t*srl' ' 





%asV' 



Tick.- 



'"d' 



Fixj. 13. 



mchj. 



Fi^. 15. 



FHuth.Lilh'SJm 



