paired_comparisons function

Paired comparison matrix for a partial ordering/ranking dataset

Construct the paired comparison matrix for a partial ordering/ranking dataset.

paired_comparisons(data, format_input, nranked = NULL)

Arguments

• data: Numeric N$$x$$K data matrix of partial sequences.
• format_input: Character string indicating the format of the data input, namely "ordering" or "ranking".
• nranked: Optional numeric vector of length $N$ with the number of items ranked by each sample unit.

Returns

Numeric K$$x$$K paired comparison matrix: the $(i,i')$-th entry indicates the number of sample units that preferred item $i$ to item $i'$.

Examples

data(d_dublinwest)
paired_comparisons(data=d_dublinwest, format_input="ordering")

References

Mollica, C. and Tardella, L. (2017). Bayesian Plackett-Luce mixture models for partially ranked data. Psychometrika, 82 (2), pages 442--458, ISSN: 0033-3123, DOI: 10.1007/s11336-016-9530-0.

See Also

rank_summaries

Author(s)

Cristina Mollica and Luca Tardella