Clean Data for Analytics

Recently been involved in the process of addressing data quality.  Key for any analytics.    A general look.  One other way to think of this is to use semantic data management tools to create precise statements of the knowledge that sits behind the data.  Examined that with Stanford KSL a while ago. That ultimately evolved to the package Protoge.   Most recently took a dive into the impressive package Top Quadrant.   What other large entities are doing this?