DIVA Project

Loughborough University Collaboration

DIVA Project

Working in collaboration with David Deacon and James Stanyer, professors at Loughborough University, we developed DIVA.

DIVA is an online resource for analysing diversity in statistical distributions that attain the nominal/categorical level of measurement.

This service allows you to enter frequency distributions with up to thirty categories. With DIVA you can calculate the diversity scores using six existing measures of qualitative variation:

1. Simpsons’ D

2. HREL

3. the Index of Qualitative Variation (IQV)

4. the Deviation from the Mode (DM)

5. the Mean Difference Analog (MDA)

6. Herfindahl-Hirschman Index (HHI)

You can also calculate  new diversity measure (the Diversity Average (DIVa)) which integrates the most stable of the above measures, population estimates for each of these descriptive measures, using bootstrap resampling methods (based on 10,000 resamples with replacement) and bi-variate hypothesis testing, using permutation testing (based on 10,000 resamples without replacement).

People Behind Diva

Peter Dean
Peter Dean

Director at BIAS

Zhao (Orange) Gao
Zhao (Orange) Gao

Data Scientist at BIAS

David Deacon
David Deacon

Loughborough University Professor

James Stanyer
James Stanyer

Loughborough University Professor

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