[FLINK-13911] Add the interface of ModelDataConverter, and several base classes that implement this interface.

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Won't Do
• Component/s: Library / Machine Learning
• Labels: pull-request-available
• Assignee: Unassigned
• Reporter: Xu Yang
• Created: 30/Aug/19 09:46
• Updated: 16/Oct/22 08:25
• Resolved: 16/Oct/22 08:25

Description

ModelDataConverter is an interface that defines methods for converting a generic model data object to a collection of rows and the other way around. It is used when we are exporting the model data to a table, as well as loading model data from a table for inference.

• Add ModelDataConverter which defines the model data conversion methods.
• Add SimpleModelDataConverter which is a specific model data converter where the model data is represented as meta data and a collection of strings.
• Add LabeledModelDataConverter which is a specific model data converter where the model data is represented as meta data, a collection of strings, and a collection of label values.
• Add RichModelDataConverter which is a specific model data converter where the model data is represented as meta data, a collection of strings, and a collection of auxiliary rows.
• Add ModelConverterUtils which provides utility functions for implementing the above model data converters.

Issue Links

• links to: GitHub Pull Request #9566