OA: Initial design

[detlefarend]

The initial models and concepts shall be designed and implemented:

• [x] Stream processing
  • [x] Stream providers and streams (Laxmikant)
    • [x] Class Instance: time stamp extensions
  • [x] Processing
    • [x] Class OAShared
    • [x] Class OATask
    • [x] Class OAWorkflow
    • [x] Class OAScenario
• [x] Systems

Prerequisites:

391

[detlefarend]

Hi @laxmikantbaheti, I revised the models for stream providers and streams. I moved the download-methods from class Stream to the OpenML wrapper class because the need for downloading data highly depends on the stream provider.

[detlefarend]

Hi @laxmikantbaheti, I revised the stream classes and related class diagram a little. In class Stream I eliminated internal attribute self._name. Your howtos are still running.

[detlefarend]

Hi @laxmikantbaheti, the initial design show be more or less ok for the moment. Let's start implementing and redesign on demand...

[detlefarend]

@laxmikantbaheti I think the initial design is done. We can (and will) review/redesign/refactor the design during our implementations...

[detlefarend]

Classes OATrainingResults, OATraining removed