A simple function to compute the similarity between 2 words

word_similarity.go

import "math"

// similarity computes the similarity between
// 2 words. w1len and w2len are the lengths of the 2
// words for which to compute the similarity.
// ld is the levenshtein distance between the 2 words.
// It returns a value between 0 and 1 that identifies the similarity
// between the 2 words. 2 equal words will have a similarity of 1.
func similarity(w1Len, w2Len, ld int) float64 {
  maxLen := math.Max(float64(w1Len), float64(w2Len))
  
  return 1.0 - float64(ld)/float64(maxLen)
}