simcadi : Similarity Indices for Categorical Distributions

In this article we introduce the Stata command simcadi. It helps to calculate indicators for the similarity of categorically ordered variables and distribution, respectively. In particular, it permits the calculation of the Cosine index, and indices introduced by Finger and Kreinin (1979), Bray and Curtis (1957), Dice (1945), Sørenson (1948), Jaccard (1912), Grubel and Lloyd (1971), Ruzicka (1958), and Gower (1971). Moreover, it allows us to compute the development of a distribution over time. The command offers various options for an efficient handling of datasets, because it permits the calculation of benchmarks of comparison automatically, and the incoporation of complex weighting schemes