rand {blockmodeling} | R Documentation |

## Comparing partitions on one or multiple sets of units

### Description

Rand Index and Rand Index corrected/adjusted for chance for comparing partitions (Hubert & Arabie, 1985). The functions also support computing these indices on partitions on multiple sets (where a "combined" partition is a list of multiple partitions). The names of the clusters do not matter.

### Usage

```
rand(clu1, clu2, tab)
crand(
clu1,
clu2,
tab,
multiSets = c("weights", "unlist"),
weights = c("size", "equal"),
returnIndividual = "attr"
)
rand2(clu1, clu2)
crand2(clu1, clu2)
```

### Arguments

`clu1` |
The first of the two partitions to be compared, given in the form of vectors, where for each unit a cluster membership is given. Alternatively, this can be a contingency table obtained as a |

`clu2` |
If |

`tab` |
A contingency table obtained as a |

`multiSets` |
How should we compute the index in case of multiple sets of unis (if |

`weights` |
Weights to be used if |

`returnIndividual` |
If |

### Value

The value of Rand Index (corrected/adjusted for chance) unless `multiSets="weight"`

and `returnIndividual=FALSE`

. In this case, a list with two items is return. The "global" index is in `global`

, while the the indices by sets are in `bySets`

.

### Author(s)

Aleš Žiberna

### References

Hubert, L., & Arabie, P. (1985). Comparing Partitions. Journal of Classification, 2(1), 193-218.

*blockmodeling*version 1.1.5 Index]