While DBMs are able to correctly identify a small set of triples with relative features such as (skyscraper, apartment, tall) as discriminative, interpretation of relative relations requires two types of features which are not targeted by the models, namely: (i) the extraction of precise numerical reference points at scale (dealing with variations of dimensional units) and (ii) the ability to extrapolate the relations for unobserved lexemes by an explicit mechanism of comparative/transitive reasoning.
the current model is able to identify "skyscraper" as being taller than an "apartment", but fails to identify neither as taller than a "giraffe".