An example of the filter ranking for the second-stage model corresponding to planets with radii between 0.8 and 1.0 R_J. The process begins with 10 features: a transit depth for each of the 10 filters. The x-axis shows the filter elimination steps, starting with 10 features on the left and proceeding until only the last two filters remain. Each step removes the filter with the lowest feature-importance score, and the remaining filters define the ranking. From this result, the filter ranking for the optical observation of this planet size is V, ﹩{u}^{{\prime} }﹩, ﹩{z}^{{\prime} }﹩, B, ﹩{i}^{{\prime} }﹩, ﹩{r}^{{\prime} }﹩, I, ﹩{g}^{{\prime} }﹩, U, and R.