Some components do not have descriptions (or useful descriptions) in intellisense

[GalOshri]

Some components do not have a description when looking at them in intellisense (images below). A few examples: ToPrincipalComponents, ReplaceWithMissingValues, FeaturizeText.

For components like FastTree and LightGBM, the description just says this is an extension method for FastTree/LightGBM. Perhaps this should at least mention that these are decision trees or some other information? SDCA has a more helpful description.

Explanation:

No explanation: