It is a wallet credibility score based on on-chain and off-chain factors. The DAOs can run this on their community to check the Karma scores of their members and take important decisions based on this stat. One use case is a fair distribution of Airdrop tokens.
We had to Gaussian distribution function but it being very complex we failed to do it. Then we found a way to implement a simpler version of it by using the exponent and log functions smartly.