Jaccard index
Índice Jaccard
- Date
- 1901 · confidence high
- Place
- Lausanne, Switzerland
- Credited to
- Paul Jaccard
- Field
- Knowledge & symbols
What it is
A statistic measuring the similarity between two sets as the ratio of the size of their intersection to that of their union, introduced by botanist Paul Jaccard to compare alpine plant communities.
What it led to
- Widespread use in ecology to compare species communities
- Adoption in data mining and machine learning to measure set similarity
- Use as the critical success index in meteorology
- Variants such as the Tanimoto index or coefficient