CA: add queryMissingScores parameter

If TRUE, attempt to retrieve corpus-based association scores for
vc/collocate combinations that would otherwise be imputed, by
re-querying the KorAP backend without applying the collocate frequency
threshold.

Change-Id: I7d2707e16d6efab3515e4cebef4985e8b780a116
diff --git a/man/collocationAnalysis-KorAPConnection-method.Rd b/man/collocationAnalysis-KorAPConnection-method.Rd
index a912430..bc23235 100644
--- a/man/collocationAnalysis-KorAPConnection-method.Rd
+++ b/man/collocationAnalysis-KorAPConnection-method.Rd
@@ -27,6 +27,7 @@
   threshold = 2,
   localStopwords = c(),
   collocateFilterRegex = "^[:alnum:]+-?[:alnum:]*$",
+  queryMissingScores = FALSE,
   missingScoreQuantile = 0.05,
   vcLabel = NA_character_,
   ...
@@ -75,6 +76,8 @@
 
 \item{collocateFilterRegex}{allow only collocates matching the regular expression}
 
+\item{queryMissingScores}{if TRUE, attempt to retrieve corpus-based association scores for vc/collocate combinations that would otherwise be imputed, by re-querying the KorAP backend without applying the collocate frequency threshold}
+
 \item{missingScoreQuantile}{lower quantile (evaluated per association measure) that anchors the adaptive floor used for imputing missing scores between virtual corpora; a robust spread is subtracted from this anchor so the imputed values stay below the weakest observed scores}
 
 \item{vcLabel}{optional label override for the current virtual corpus (used internally when named VC collections are expanded)}