Function diceCoefficient

String/DiceCoefficient.js:33–48

(stringA, stringB)

// Calculate Dice coeff of 2 strings
function diceCoefficient(stringA, stringB) {
  if (stringA === stringB) return 1
  else if (stringA.length < 2 || stringB.length < 2) return 0

  const bigramsA = mapBigrams(stringA)

  const lengthA = stringA.length - 1
  const lengthB = stringB.length - 1

  let dice = (2 * countCommonBigrams(bigramsA, stringB)) / (lengthA + lengthB)

  // cut 0.xxxxxx to 0.xx for simplicity
  dice = Math.floor(dice * 100) / 100

  return dice
}

export { diceCoefficient }