LLink Algorithms
Currently only the L field algorithms are available.
The similarity is computed between all source locations and all references locations.
Three algorithms can be used.
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Optimistic algorithm (opt) Computes the distance between sets of coordinates and retain the closest pair of coordinates for the computation of the local similarity coefficient.
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Pessimistic algorithm (pes) Computes the distance between sets of coordinates and retain the most distant pair of coordinates for the computation of the local similarity coefficient.
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Average distance
When two records have only one coordinate each, all three algorithms produce the same coefficient of similarity.