Doubt about number of occurrences in the DWAVE output
We are working on solving the Traveling Salesman Problem using the DWAVE Advantadge_system4.1. We have using the QUBO formulation built in https://www.frontiersin.org/articles/10.3389/fict.2019.00013/full.
We have a problem which basically consist on having a very sparse distribution of results (despite the DWAVE computer reaches the optimum result). In the following example, we can see how the computer has reached the optimum value just in two occasions, while the rest of the runs has reached worse results in a very sparse distribution.
Where can we found information about this issue and how to solve it? Is there any documentation or paper which we can read?
Many thanks in advance.