The present study offers a new approach to measure unbiased rarity at the community level r q* . In this approach. the locked data matrix (matrix H) and the survey data matrix of the communities (matrix A) play the essential roles. q* q* The core equations of this approach are Tsallis entropy (qS) and bias-corrected Tsallis entropy q S. https://stnicksknives.shop/product-category/outdoors-tools/