# Kemeny distance

### Description

Compute the Kemeny distance of a data matrix containing preference rankings, or compute the kemeny distance between two (matrices containing) rankings.

### Usage

1 |

### Arguments

`X` |
A N by M data matrix, in which there are N judges and M objects to be judged. Each row is a ranking of the objects which are represented by the columns. If there is only X as input, the output is a square distance matrix |

`Y` |
A row vector, or a n by M data matrix in which there are n judges and the same M objects as X to be judged. |

### Value

If there is anly X as input, d = square distance matrix.

If there is also Y as input, d = matrix with N rows and n columns.

### Author(s)

Antonio D'Ambrosio <antdambr@unina.it>

### References

Kemeny, J. G., & Snell, L. J. (1962). Preference ranking: an axiomatic approach. Mathematical models in the social sciences, 9-23.

### See Also

Tau_X

### Examples

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