The coverage is the percentage of the top 100 polymers discovered throughout each GA run. This metric helps evaluate how well the GA can explore and jump out of local optima to find multiple good candidates. In some optimization tasks, it may be more important to find a myriad of top performers as opposed to only the global optimum. The speedup is the size of the search space divided by the number of unique individuals examined by the GA until convergence. This metric shows how much quicker using the GA is compared to a brute-force approach.