Dong Lin created FLINK-23959:
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Summary: FLIP-175: Add GraphBuilder to compose
Estimator/Transformer/AlgoOperator from a DAG of stages
Key: FLINK-23959
URL: https://issues.apache.org/jira/browse/FLINK-23959
Project: Flink
Issue Type: Improvement
Reporter: Dong Lin
The existing Flink ML library allows users to compose an Estimator/Transformer
from a pipeline (i.e. linear sequence) of Estimator/Transformer. Users only
need to construct this Pipeline once and generate the corresponding
PipelineModel, without having to explicitly construct the fitted PipelineModel
as a linear sequence of stages.
However, in the use-case that needs a DAG of Estimator/Transformer, users
currently needs to separately build the DAG separately, once for the training
logic and once for the inference logic. This experience is inferior to the
cases supported by the Pipeline.
To improve the user experience, we propose to add several helper classes that
allow users to compose Estimator/Transformer/AlgoOperator from a DAG of
Estimator/Transformer/AlgoOperator.
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