# What did we learn?

## Lander Waterman formula

To estimate the number of contigs in the assembly

For a genome of length $$G,$$ with $$N$$ reads of average length $$L,$$ and an overlap threshold of $$T,$$ the expected number of contigs in an assembly is $N\exp\left(-\frac{(L-T)N}{G}\right)$ (more precisely, it is the number of gaps between contigs)