import { NumberArray } from 'cheminfo-types';
/**
 *Returns the Sorensen distance between vectors a and b
 * @link [Sorensen algorithm](https://en.wikipedia.org/wiki/S%C3%B8rensen%E2%80%93Dice_coefficient)
 * @param a - first vector
 * @param b - second vector
 *
 */
export default function sorensen(a: NumberArray, b: NumberArray): number;
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