The issue is a feature request for an ONNX converter. To move forward, investigate the existing ONNX converter implementations for scikit learn estimators (e.g., sklearn onnx). Examine the library's current encoder classes and their fit/transform methods to understand how to export them. Review comment #258 in the issue for any prior discussion or pointers from maintainers. Consider creating a proof of concept for one encoder and discuss with the community about the desired scope and API.
