Prefixation Ability Index and Verbal Grammar Correlation Index prove the reality of Buyeo group

要旨

All suggestions about reality of Buyeo group were based on the representation of a language as a heap of lexemes: such method allows different scholars to make different conclusions and doesn't suppose verification. Language is first of all structure/grammar, but not a heap of lexemes, so methods of comparative linguistics should be based on comparison of grammars. Prefixation Ability Index (PAI) and Verbal Grammar Correlation Index (VGCI) are typology based tools of comparative linguistics. PAI allows us to see whether languages are potentially related: if values of PAI differ more than fourfold, it's a sign of unrelatedness, if PAI values differ less than fourfold, there is a possibility for some further search to find proves of relatedness. VGCI completely answers questions about relatedness/unrelatedness: if VGCI value is 0.4 and more then languages are related, if VGCI is 0.3 and less then languages are unrelated. PAI of Japanese is 0.13, PAI of Korean is 0.13; it means they can be related. VGCI of Japanese and Korean is 0.57, it's almost the same as VGCI of English and Afrikaans that is 0.56, so it means that Japanese and Korean belong to the same group, but not just to the same family.

主題