"summary"( object, ..., ties = c("omit", "uniform", "cpolr", "minentropy"), combn = TRUE, digits = 3)
anchors
"uniform": allocates in equal proportions among scalar values
"omit": drops cases with interval values
"cpolr": uses censored ordered probit model to allocate ties
"minentropy": allocates ties to produce minimum entropy
Wand, Jonathan and Gary King. (2007) Anchoring Vignetttes in R: A (different kind of) Vignette copy at http://wand.stanford.edu/anchors/doc/anchors.pdf Gary King and Jonathan Wand. "Comparing Incomparable Survey Responses: New Tools for Anchoring Vignettes," Political Analysis, 15, 1 (Winter, 2007): Pp. 46-66, copy at http://gking.harvard.edu/files/abs/c-abs.shtml.
King, Gary; Christopher J.L. Murray; Joshua A. Salomon; and Ajay Tandon. "Enhancing the Validity and Cross-cultural Comparability of Survey Research," American Political Science Review, Vol. 98, No. 1 (February, 2004): 191-207, copy at http://gking.harvard.edu/files/abs/vign-abs.shtml
anchors