This function has been removed as of Datameer v6.3

## Syntax

GROUP_JACCARD_DIST(<string>)

## Description

Computes the Jaccard distance of all values in a group. The Jaccard distance between two sets is the ratio of the size of their intersection to the size of their union. For example, the Jaccard distance between two species is 1-(number of regions where both species are present)/(number of regions where at least one species is present).

This is an aggregate function.

## Example

Given the following data:

Groups | |
---|---|

group1 | a |

group1 | b |

group1 | c |

group1 | c |

group1 | e |

group1 | g |

group1 | g |

group1 | g |

group2 | a |

group2 | c |

group2 | d |

group2 | h |

group2 | h |

group2 | h |

group2 | m |

group2 | n |

First create a group using GROUPBY(#RawData!Groups)

Groups |
---|

group1 |

group2 |

Then use the GROUP_JACCARD_DIST(#RawData!Letters), and the result is the Jaccard distance of the group created from the column in relation to the GROUPBY() column.

Groups | JACCARD_DIST |
---|---|

group1 | 0.4 |

group2 | 0.166666666666666666 |