### Navigation

- index
- modules |
- modules |
- next |
- previous |
- SciPy v0.12 Reference Guide (DRAFT) »
- Spatial algorithms and data structures (`scipy.spatial`) »
- Distance computations (`scipy.spatial.distance`) »

# scipy.spatial.distance.russellrao

`scipy.spatial.distance.``russellrao`(u, v)

  Computes the Russell-Rao dissimilarity between two boolean 1-D arrays.

  The Russell-Rao dissimilarity between two boolean 1-D arrays, u and v, is defined as

  where is the number of occurrences of and for .

  Parameters : | u : (N,) array_like, bool Input array. v : (N,) array_like, bool Input array.
  Returns : | russellrao : double The Russell-Rao dissimilarity between vectors u and v.

### Navigation

- index
- modules |
- modules |
- next |
- previous |
- SciPy v0.12 Reference Guide (DRAFT) »
- Spatial algorithms and data structures (`scipy.spatial`) »
- Distance computations (`scipy.spatial.distance`) »