Daylight v4.9
Release Date: 1 February 2008


dt_fp_tversky - compute the Tversky coefficient of two fingerprints

Generic Prototype

dt_fp_tversky(dt_Handle, dt_Handle, dt_Real, dt_Real) => dt_Real

C Prototype

#include "dt_finger.h"

dt_Real dt_fp_tversky(dt_Handle fp1, dt_Handle fp2, dt_Real alpha, dt_Real beta)

FORTRAN Prototype

include ''

real*4 dt_f_fp_tversky(fp1, fp2, a, b)

integer*4 fp1
integer*4 fp2
real*4 a
real*4 b


Calculates the Tversky coefficient between the fingerprints. The calculation is not performed if the fingerprints are not compatible (different sizes) or if the objects are not fingerprints.

See the Daylight Theory Manual, the chapter on Fingerprints, for an explanation of the Tversky coefficient.

Return Value

Returns the tversky coefficient between two fingerprints. The tversky coefficient between all other incompatible objects is defined as -1.0.

Related Topics

dt_fp_allocfp(3) dt_fp_bitcount(3) dt_fp_bitvalue(3) dt_fp_commonbitcount(3) dt_fp_euclid(3) dt_fp_fingertest(3) dt_fp_foldfp(3) dt_fp_generatefp(3) dt_fp_nbits(3) dt_fp_obitcount(3) dt_fp_obits(3) dt_fp_range(3) dt_fp_setbitvalue(3) dt_fp_setobitcount(3) dt_fp_setobits(3) dt_fp_setrange(3) dt_fp_similarity(3) dt_fp_tanimoto(3)