Eckhard Bick - VISL

, , ... N PP contraste com, respeito para
, N PRP INF capacidade de, licença para
N FS-que convicção que, esperança que
N NUM século, capítulo
[used for non-verbal valency: N = noun, ADJ = adjective, ADV = adverb, PRP = preposition, PP =
prepositional phrase, NP = noun phrase, INF = infinitive, FS = finite subclause, NUM = numeral]
for adjectives:
, , ... ADJ PP cônscio de, rico em
, ADJ PRP INF capaz de, hábil para
ADJ FS-que atento que, esperança que
for adverbs:
ADV PRP antes de, depois de
ADV PRP INF antes de, depois de
ADV NP inclusive
for prepositions:
PRP FS-que até que
In a broader way, valency is understood as lexical co-occurence rules, so valency-like
tags are used to inform, for instance, that measuring nouns like 'segundo' (second) or
'metro' (meter) are regularly preceded by numerals (). Typically, such
information treats "reverse linear precedence", providing information about the left
hand context. The tag , by comparison, used with words like 'capítulo' (chapter)
or 'número' (number), signals real (functional) valency and right hand context. Another
example for "co-occurrence valency" are tags, where more or less fixed PPexpressions
are targeted by providing information about the governing preposition at its
argument nominal, e.g. 'graça' , where the assembled PP forms a fairly
independent lexical unit, 'de graça' (‘free of charge’).
Accordingly, valency information can be exploited for disambiguation in two
ways: a) by "local" rules, typically using close lexical or word class context for
morphological disambiguation, and b) by "global" rules, for determining functional
dependency. Table (1) attempts to quantify the importance of valency tags for
disambiguation on different levels:
- 161 -