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https://issues.apache.org/jira/browse/FLINK-2116?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14572977#comment-14572977
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Till Rohrmann commented on FLINK-2116:
--------------------------------------

We could still offer a way to create matrices from a set of vectors. But then 
you always have to make a tradeoff between data granularity and data 
parallelism. It might be worth to make some measurements with both methods.

I guess that's the price we have to pay in order to have flexible pipelines. At 
least I couldn't come up with a better/more concise solution for that. 
Moreover, once we have fully specified the pipeline interface it should only be 
necessary for a programmer who wants to add a new operator to simply implement 
a small set of operation (in the form of implicit values). Concerning the long 
type names, I think we have to weigh up how much less we want to code and how 
much harder the code would be to understand/maintain then.

> Make pipeline extension require less coding
> -------------------------------------------
>
>                 Key: FLINK-2116
>                 URL: https://issues.apache.org/jira/browse/FLINK-2116
>             Project: Flink
>          Issue Type: Improvement
>          Components: Machine Learning Library
>            Reporter: Mikio Braun
>            Assignee: Till Rohrmann
>            Priority: Minor
>
> Right now, implementing methods from the pipelines for new types, or even 
> adding new methods to pipelines requires many steps:
> 1) implementing methods for new types
>   implement implicit of the corresponding class encapsulating the operation 
> in the companion object
> 2) adding methods to the pipeline
>   - adding a method
>   - adding a trait for the operation
>   - implement implicit in the companion object
> These are all objects which contain many generic parameters, so reducing the 
> work would be great.
> The goal should be that you can really focus on the code to add, and have as 
> little boilerplate code as possible.



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