The feature theory that is assumed for the purposes of this paper considers features to be attribute-value pairs.
If we apply a similar idea to morphology, (26) and to features seen as attribute-value pairs, we could claim that an underspecified feature is one that bears an attribute without a value, and that this value is acquired by some particular process.
It is worth noticing that what is predicted is only the particular value of the feature, not the entire feature itself, being an attribute-value pair.
Noun stems bear a gender feature as an attribute-value pair, as in [gd:X].
Stems whose gender value does not derive on the basis of other information contain a fully specified attribute-value pair (see ).
It should be noticed that the examples of persisting underspecification that are examined in this section argue in favor of the approach that considers features to be attribute-value pairs: a noun with a gender attribute without a particular value (e.
Considering features to be attribute-value pairs, entries were distinguished into two types: these characterized by a fully specified gender feature, that is, by a feature containing an attribute with a specific value part, and those that bear an underspecified gender feature, that is, an attribute without a value.
See, for example, Markopoulos (1998) and Ralli (2000b) for a computational analysis of Greek inflection where morphosyntactic information is handled with the use of features represented as attribute-value pairs.