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- I assume sentiment and star ratings are strongly correlated, but are there cases where these deviate?

- Is there any seasonality to review volume and/or sentiment (day of week, time of month/year/etc) that holds across many apps?

- Are there interesting differences in sentiment mean+variance by app category? For example, are utility app reviews more polarized than games?

> - I assume sentiment and star ratings are strongly correlated, but are there cases where these deviate?

> - Are there interesting differences in sentiment mean+variance by app category? For example, are utility app reviews more polarized than games?

These are answered in the white paper: https://arxiv.org/pdf/1703.02256.pdf