Interestingness Ranking of colored v.s. no colored bars

[dorisjlee]

Colored bars and lines currently have a fixed score of 0.2, which is perhaps a bit too high. There might be an issue with the interestingness calculation of the no colored bars since their values are all close to zero. Ideally, the no colored bars should be prioritized since they are simpler and more interpretable.

[dorisjlee]

With the new PR pulled in, the interestingness score for the colored visualizations are now dynamic. But the non-colored vis is still not showing up in the beginning. The visualization with Name should still be ranked lower than the rest. There might be something weird happening with the MEAN(*), Cylinders visualization since their scores are all close to 0.

[dorisjlee]

This is fixed by @thyneb19 in #72. The Name visualization is deprioritized due to high cardinality. The cardinality downweighting factor is decreased in the unevenness metric.