The (simple) matching coefficient is useful when both matches and non-matches carry equal information (symmetry). The Matching coefficient was defined by Sokal and Michener (1958) ^[1]. This coefficient gives the same weight to presents and absence of items.

${\displaystyle s=(p+s)/t}$

See also

• Jaccard distance
• UPGMA

References

External links

• An Introduction to mathematical taxonomy. Cambridge University Press. 1982. {{ cite book}}: Cite uses deprecated parameter |authors= ( help)
• http://people.revoledu.com/kardi/tutorial/Similarity/SimpleMatching.html Simple Matching Coefficient
• http://stat.ethz.ch/education/semesters/ss2012/ams/slides/v4.2.pdf Measuring distances