CA: flag imputed cells in multi-VC comparisons
When a collocate is attested in one virtual corpus but not in another,
add_multi_vc_comparisons() imputes the missing scores from a pooled floor.
The resulting delta/winner/loser columns then describe presence vs. absence
rather than a measured contrast, and nothing in the output said so.
Record the missingness pattern before imputation and expose it as
`imputed_<label>` (per label), `n_imputed` (count) and `imputed` (any), so
that `filter(!imputed)` keeps only collocates attested in every compared
virtual corpus.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Change-Id: I25fb0196f1b75519c126130fc19bc62d40675e17
diff --git a/man/collocationAnalysis-KorAPConnection-method.Rd b/man/collocationAnalysis-KorAPConnection-method.Rd
index 8a3c899..e7875f4 100644
--- a/man/collocationAnalysis-KorAPConnection-method.Rd
+++ b/man/collocationAnalysis-KorAPConnection-method.Rd
@@ -99,6 +99,7 @@
\item Ranks per label/measure with the pattern \code{rank_<label>_<measure>} (1 is best) and the corresponding percentile ranks \code{percentile_rank_<label>_<measure>}.
\item Pairwise contrasts for two-label comparisons, e.g. \code{delta_<measure>}, \code{delta_rank_<measure>}, and \code{delta_percentile_rank_<measure>}.
\item Summary columns describing the strongest labels per measure (\code{winner_*}, \code{runner_up_*}, \code{loser_*}, and \code{max_delta_*}), including winner/loser \code{webUIRequestUrl} columns. In multi-VC comparisons, missing per-label concordance URLs are derived from another available row URL for the same \code{node}/\code{collocate} by replacing the \code{cq} parameter with the target label's virtual corpus. Unsuffixed \code{winner_webUIRequestUrl} and \code{loser_webUIRequestUrl} columns are populated only when the score-based URL choices agree.
+\item \code{imputed_<label>}, \code{n_imputed}, and \code{imputed}: flags marking rows whose scores were not observed for some label but imputed (see \code{missingScoreQuantile}). Filter with \code{dplyr::filter(!imputed)} to keep only collocates attested in every compared virtual corpus.
\item Optional helper columns such as \code{query}, \code{example}, or \code{url} when example retrieval is requested.
}
}