This article is part of the probabilistic linkage training materials.
The relationship between Partial Match Weights, Bayes Factors, and Probabilities
This chart shows how the partial match weights in a Splink linker.match_weights_chart (see here) are related to Bayes Factors and probabilities.
Hover over the chart below to select a match weight.
Caveat: the ‘probability’ is really only defined if a prior exists. For the above chart, the prior is assumed to be 50%.
Conversion of partial match weight to probability
Conversion of probability to partial match weight
Additional resources
Also check the match weight calculator to more precisely calculate match weights, probabilities, and Bayes factors.
This article is part of the probabilistic linkage training materials.