| bnb | The bivariate negative binomial distribution | 
| bp | The bivariate poisson distribution | 
| bzinb | The bivariate zero-inflated negative binomial distribution | 
| bzinb.se | The bivariate zero-inflated negative binomial distribution - Standard error estimation | 
| bzip.a | The bivariate zero-inflated Poisson distribution (A) | 
| bzip.b | The bivariate zero-inflated Poisson distribution (B) | 
| idigamma | Inverse digamma function | 
| lik.bnb | The bivariate negative binomial distribution | 
| lik.bp | The bivariate poisson distribution | 
| lik.bzinb | The bivariate zero-inflated negative binomial distribution | 
| lik.bzip.a | The bivariate zero-inflated Poisson distribution (A) | 
| lik.bzip.b | The bivariate zero-inflated Poisson distribution (B) | 
| pairwise.bzinb | Pairwise underlying correlation based on bivariate zero-inflated negative binomial (BZINB) model | 
| rbnb | The bivariate negative binomial distribution | 
| rbp | The bivariate poisson distribution | 
| rbzinb | The bivariate zero-inflated negative binomial distribution | 
| rbzip.a | The bivariate zero-inflated Poisson distribution (A) | 
| rbzip.b | The bivariate zero-inflated Poisson distribution (B) | 
| weighted.pc | Weighted Pearson Correlation (WPC) based on bivariate zero-inflated negative binomial (BZINB) model |