extendRanking {RankAggregator}

Fully extend a partial ranking

Description

This function is called by RankAggregator::consensusRanking. The heuristic procedure orders unranked Items according the proportion of times an item was preferred in all pairwise comparisons with other unranked Items.

Usage

extendRanking(umat, node)

Arguments

umat

a matrix, which is either the output of evaluationMatrix, or a subset of the output of evaluationMatrix.

node

a list of elements, containing information about a node in the branch and bound search space. The relevant elements here are $partial.ranking, $included, and $prl. Where, $partial.ranking is a vector of rank positions for each Item in umat that is ranked so far; partial rankings may contain some - or all - NA values. $included is a logical vector denoting if an Item in umat is ranked in $partial.ranking. And $prl is a numeric value denoting how many of the Items in umat are ranked in $partial.ranking.

Value

A vector of rank positions.