The inductive class analysis method was used for the analysis.

Say there's more than one inductive class analysis method (which is reasonable, since the noun phrase is made up of common words and there are no capital letters). But the reader doesn't know so much about inductive class analysis methods and to him (and also in the context of the text), it doesn't matter to provide information (by use of 'a') that there are multiple ones.

In this case is the use of 'the' appropriate?