The trainer entry points don't contain sufficient information about the algorithm type (linear, tree etc)

[sfilipi]

System information

• .NET Version (eg., dotnet --info): 0.3.0-preview-26604-1

Issue

The trainer entry points don't contain any information about their algorithm type ( tree, linear)
Systems interfacing with ML.NET in this fashion might need to present to their users the information classified based on this criteria.

[shauheen]

Can this and #314 perhaps be addressed in the same PR?

[sfilipi]

We could place the information in the same entry point property, potentially another entry in IInputType. Logged them separately since they are parallel workitems. We could combine the PRs.

[Zruty0]

I will be closing this issue, since it has never been discussed for 1/2 year.
Also, the API now suggests somewhat better classification of components via MLContext.