Hi all,

I am using the OCLC Classify API. As show in the sample response snippet
below the two attributes "sfa" and "nsfa" could hold different values.  

According to
"http://oclc.org/developer/documentation/classify/response-details":

sfa - classification number from the subfield $a of 082/092 or 050/090,
or 060/096

nsfa - normalized classification number from the subfield $a of 082/092
or 050/090, or 060/096

However,I would like to know how this normalization is done.

Thanks,
Arash


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