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Lexical Semantics of Adjectives - CiteSeerX

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• SIDE-ATTRIBUTE<br />

• SHAPE-ATTRIBUTE<br />

• DIRECTION-ATTRIBUTE<br />

52<br />

This division imposes a coarse grain size <strong>of</strong> description which is likely to have to be made refined<br />

and substantially extended, as dictated by the needs to support disambiguation in semantic analysis.<br />

4.3 “What Does This Adjective Mean?”<br />

In this subsection, we discuss two related but distinct issues, namely, how a lexicon acquirer can<br />

discover what an adjective means and how to decide how to represent this meaning. Much more<br />

effort has been spent in the field on the latter question, though the former is a much more difficult<br />

issue. We intend to demonstrate that the difficulties <strong>of</strong> determining what the meaning actually is<br />

are <strong>of</strong>ten not appreciated by researchers.<br />

4.3.1 Representation <strong>of</strong> Meaning<br />

Our commitment to the ontological representation in the lexicon (see Section 2.1) helps us to determine<br />

the actual representation <strong>of</strong> a lexical entry but it does not make it a deterministic process:<br />

there are still choices to make and, accordingly, principled bases for making these choices.<br />

One good example <strong>of</strong> such a choice and a theoretical basis for making it is our treatment <strong>of</strong> the<br />

adjective abhorrent. In general, this adjective is morphologically related to the verb abhor, and its<br />

lexical entry is derived from that <strong>of</strong> the verb. There are, however, at least two very distinct ways<br />

<strong>of</strong> representing abhor, one as an event and the other as an attitude. If we had an event concept LIKE,<br />

for instance, we would easily present abhor as an intensified negation <strong>of</strong> LIKE. Alternatively, we<br />

can represent abhor--and like--as an attitude: like is represented pretty much along the lines <strong>of</strong> good<br />

(see (45) above), and abhor simply replaces the “> 0.75” value <strong>of</strong> like on the evaluation scale with<br />

something like “< 0.1.” Accordingly, either an event concept or an evaluative attitude appear in the<br />

LEX-MAP for abhorrent. Which should it be?<br />

The answer is based on our independently motivated position with regard to the representation <strong>of</strong><br />

verbs: we represent actions but not states as events. This disqualifies abhor--and like, along with<br />

many other evaluative states--from an event-based representation, and the adjective abhorrent gets<br />

an attitude-based treatment (97):<br />

(97) (abhorrent<br />

(abhorrent-Adj1<br />

(CAT adj)<br />

(SYN-STRUC<br />

(1 ((root $var1)<br />

(cat n)<br />

(mods ((root $var0)))))<br />

(2 ((root $var0)<br />

(cat adj)<br />

(subj ((root $var1)<br />

(cat n))))))<br />

(SEM-STRUC<br />

(LEX-MAP<br />

(attitude (type evaluative)<br />

(attitude-value (value (< 0.1)))<br />

(scope ^$var1)<br />

(attributed-to *speaker*))))))

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