Fuzzy fuzz wratio

Fuzz.WRatio

Picks among the other scorers by inspecting the input.

public static double WRatio(string a, string b)

Parameters — a and b are the strings to compare.

Returns — double in [0, 100], a weighted best among the scorers it judges applicable.

Example — the same typo Ratio scores, reached by a different route.

using Lodestar.Fuzzy;

double score = Fuzz.WRatio("apple pie", "appel pie");  // => 88.88888888888889

Remarks — the answer to "which scorer" when the input is not known in advance. It compares the lengths, tries the applicable scorers, and weights the partial ones down so that a fragment match does not automatically beat a whole-string one.

The same value as Ratio here, because on two strings of equal length there is nothing for the partial scorers to add. On a pair where one side is much longer they diverge, and that divergence is the point of the type.

It is rapidfuzz's WRatio and the weights are rapidfuzz's; the number is reproduced rather than invented, which matters because the weights are not derived from anything — they are a choice that library made.

Applies to — net10.0, netstandard2.0.

See also — Fuzz.Ratio, Fuzz.PartialRatio, the matching index.