roywei opened a new pull request #14629: [MXNET-1333] Estimator and Fit API URL: https://github.com/apache/incubator-mxnet/pull/14629 ## Description ## This PR introduce an Estimator class with easy fit method to help beginners with model training. It's been developed on a branch, and we hope to merge it to master and get feedback for first iteration. Design: https://cwiki.apache.org/confluence/display/MXNET/Gluon+Fit+API+-+Tech+Design JIRA epics: https://issues.apache.org/jira/browse/MXNET-1333 Dev list discussion: https://lists.apache.org/thread.html/f29d72f83a111f4fc87058bfbb13db83c8af068b4f2af16f61d0ea15@%3Cdev.mxnet.apache.org%3E Feedbacks: currently all feedbacks are captured in [cwiki comment section](https://cwiki.apache.org/confluence/display/MXNET/Gluon+Fit+API+-+Tech+Design). We have created JIRA issues for each feedback and will continue to work on it Follow up PRs: We currently have the following PRs to address feedback, will create more and track using JIRA issue 1. [ [MXNET-1358][Fit API] Fit api tutorial ](https://github.com/apache/incubator-mxnet/pull/14462) 2. [[MXNET-1344, 1346][FIT API] Retrieve Batch size and Logging verbose support for Gluon fit() API](https://github.com/apache/incubator-mxnet/pull/14587) 3. [[MXNET-1340, 1339][Fit API]Multi input/output ](https://github.com/apache/incubator-mxnet/pull/14628) ## Checklist ## ### Essentials ### Please feel free to remove inapplicable items for your PR. - [ ] The PR title starts with [MXNET-1333](https://issues.apache.org/jira/browse/MXNET-1333 ) - [ ] Changes are complete (i.e. I finished coding on this PR) - [ ] All changes have test coverage: - Unit tests are added for small changes to verify correctness (e.g. adding a new operator) - Nightly tests are added for complicated/long-running ones (e.g. changing distributed kvstore) - Build tests will be added for build configuration changes (e.g. adding a new build option with NCCL) - [ ] Code is well-documented: - For user-facing API changes, API doc string has been updated. - For new C++ functions in header files, their functionalities and arguments are documented. - For new examples, README.md is added to explain the what the example does, the source of the dataset, expected performance on test set and reference to the original paper if applicable - Check the API doc at http://mxnet-ci-doc.s3-accelerate.dualstack.amazonaws.com/PR-$PR_ID/$BUILD_ID/index.html - [ ] To the my best knowledge, examples are either not affected by this change, or have been fixed to be compatible with this change ### Changes ### - Estimator class for fit and evaluate - Evenhandler class for callbacks in fit methods - Unit tests - Integration/nightly tests ## Comments ## - If this change is a backward incompatible change, why must this change be made. - Interesting edge cases to note here
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