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Updated Microsoft.ML from 1.7.1 to 5.0.0.

Release notes

Sourced from Microsoft.ML's releases.

5.0.0

ML.NET 5.0.0

New Features

  • [GenAI] Introduce CausalLMPipelineChatClient for MEAI.IChatClient (#​7270)
  • Introducing SentencePiece Unigram Tokenizer Model (#​7390)
  • Phi-4 Tokenizer Support (#​7396)
  • Support O3 OpenAI model mapping (#​7394)
  • Support ByteLevel encoding in Bpe tokenizer to support DeepSeek model (#​7425)
  • Support Tiktoken Gpt-4.1 Model (#​7453)
  • Support OpenAI OSS Models with Tiktoken tokenizer (#​7494)
  • Add deterministic option for LightGBM (#​7415)
  • Added NumberOfLeaves to FastForestRegression and FastForestOva options (#​7499) - Thanks @​JoshuaSloan!

Enhancements

  • Add Timeout to Regex used in the tokenizers (#​7284)
  • Final tokenizer's cleanup (#​7291)
  • Update System.Numerics.Tensors version (#​7322) - Thanks @​asmirnov82!
  • [GenAI] SFT Example (#​7316)
  • Update M.E.AI version used by Microsoft.ML.GenAI.Core (#​7329)
  • Update DependencyModel (#​7338)
  • Some tweaks to the Microsoft.ML.Tokenizers PACKAGE.md (#​7360)
  • Consolidate System.Numerics.Tensors dependency (#​7356) - Thanks @​asmirnov82!
  • Update Microsoft.Extensions.AI to 9.3.0-preview.1.25114.11 (#​7388)
  • Create SentencePieceTokenizer from options object (#​7403)
  • Unigram tokenizer fixes (#​7409)
  • Update to M.E.AI 9.3.0-preview.1.25161.3 (#​7414)
  • Reduce usage of unsafe constructs throughout codebase (#​7426) - Thanks @​GrabYourPitchforks!
  • Cleanup SentencePiece tokenizer (#​7427)
  • Update to M.E.AI 9.4.0-preview.1.25207.5 (#​7439)
  • Update to M.E.AI 9.4.3-preview.1.25230.7 (#​7459)
  • Update to stable Microsoft.Extensions.AI.Abstractions (#​7466)
  • Convert repository to NuGet Central Package Management (#​7482)
  • Rename Casual to Causal (#​7484) - Thanks @​feiyun0112!
  • Updated Tensorflow.Net to 0.70.2 with Tensorflow 2.7.0. (#​7472) - Thanks @​Crichen!
  • Mark internal classes as internal (#​7511)
  • Address the design review feedback (#​7513)
  • BpeTokenizer Cleanup (#​7514)
  • Improve native build and mark our official build as CFS Clean (#​7516)
  • Improve unique directory generation for temp files (#​7520)
  • Updating OnnxRuntime (#​7469)

Bug Fixes

  • Fix broken inheritance from DataFrameColumn class (#​7324) - Thanks @​asmirnov82!
  • Moved SpecialTokens assignment after the modification to avoid "Collection Modified" error (#​7328) - Thanks @​shaltielshmid!
  • Fix DateTime export to csv with culture info (#​7358) - Thanks @​asmirnov82!
  • Increase cancelling waiting time for AutoMLExperiment_return_current_best_trial_when_ct_is_canceled_with_trial_completed_Async (#​7424)
  • Fixed light gbm update (#​7431)
  • Fix incorrect IntPtr null check in FftUtils (#​7434) - Thanks @​GrabYourPitchforks!
  • ImageClassificationTrainer PredictedLabelColumnName bug when the name is not default (#​7458) - Thanks @​feiyun0112!
  • Fix ElementwiseGreaterThanOrEqual to use >= instead of == (#​7475) - Thanks @​vsarakhan!
    ... (truncated)

5.0.0-preview1

ML.NET 5.0-preview.1

New Features

  • Introducing SentencePiece Unigram Tokenizer Model (#​7390)
  • Phi-4 Tokenizer Support (#​7396)

Enhancements

  • Support O3 OpenAI model mapping (#​7394)

Bug Fixes

  • Fix DateTime export to csv with culture info (#​7358) - Thanks @​asmirnov82!
  • Moved SpecialTokens assignment after the modification to avoid "Collection Modified" error (#​7328) - Thanks @​shaltielshmid!
  • Fix broken inheritance from DataFrameColumn class (#​7324) - Thanks @​asmirnov82!

Build / Test updates

  • [main] Update dependencies from dotnet/arcade (#​7387)
  • Update Microsoft.Extensions.AI to 9.3.0-preview.1.25114.11 (#​7388)
  • Update MSTest to latest (#​7349)
  • [main] Update dependencies from dotnet/arcade (#​7352)
  • Consolidate System.Numerics.Tensors dependency (#​7356) - Thanks @​asmirnov82!
  • [main] Update dependencies from dotnet/arcade (#​7382)
  • [main] Update dependencies from dotnet/arcade (#​7376)
  • [main] Update dependencies from dotnet/arcade (#​7374)
  • Net8 tests (#​7319)
  • [main] Update dependencies from dotnet/arcade (#​7266)
  • Update DependencyModel (#​7338)
  • Update M.E.AI version used by Microsoft.ML.GenAI.Core (#​7329)
  • Update System.Numerics.Tensors version (#​7322) - Thanks @​asmirnov82!

Documentation Updates

  • Fix up docs for MLContext (#​7334)
  • Some tweaks to the Microsoft.ML.Tokenizers PACKAGE.md (#​7360)
  • [GenAI] SFT Example (#​7316)
  • Update dynamic loading report reference (#​7321) - Thanks @​emmanuel-ferdman!

4.0.3

ML.NET 4.0.3

Bug Fixes

  • [release/4.0] Improve unique directory generation for temp files (#​7528)

    • Compatibility note: This change resolves a performance problem where past versions of ML.NET would leave behind folders with the pattern ml_dotnet\d+ in the temp directory, which would cause model opening performance to degrade. This fixes the problem. You may also wish to delete these empty folders once after updating.

      Using powershell:

      Get-ChildItem "$env:TEMP" -Directory -Filter "ml_dotnet*" | Remove-Item -Recurse -Force

      Using Bash:

      find "$TEMP" -type d -name "ml_dotnet*" -exec rm -rf {} +

Build / Test updates

  • [release/4.0] Update dependencies from dotnet/arcade (#​7470)
  • [release/4.0] Use arcade script for installing MacOS dependencies (#​7534)

4.0.2

ML.NET 4.0.2

Enhancements

  • [release/4.0] Support O3 OpenAI model mapping #​7395 (#​7395)

Build / Test updates

  • [release/4.0] Update dependencies from dotnet/arcade (#​7369)
  • [release/4.0] Update dependencies from dotnet/arcade (#​7377)
  • [release/4.0] Update dependencies from dotnet/arcade (#​7386)

4.0.1

ML.NET Servicing Release 4.0.1

Bug Fixes

  • Fix the BERT tokenizer to handle special tokens correctly. (#​7330) - Thanks @​shaltielshmid
  • Fix broken inheritance from DataFrameColumn class (#​7324) (#​7331) - Thanks @​asmirnov82!

Build / Test updates

  • Update System.Numerics.Tensors version (#​7322) (#​7355) - Thanks @​asmirnov82!
  • [release/4.0] Update dependencies from dotnet/arcade (#​7327)
  • Update MicrosoftExtensionsDependencyModelVersion (#​7342)

Documentation Updates

  • [release/4.0] Some tweaks to the Microsoft.ML.Tokenizers PACKAGE.md (#​7364)
  • [release/4.0] Fix up docs for MLContext (#​7363)

4.0.0-preview1

What's Changed

3.0.1

ML.NET 3.0.1

New Features

  • Add support for Apache.Arrow.Types.TimestampType to DataFrame (#​6871) - Thanks @​asmirnov82!

Enhancements

  • Update TorchSharp to latest version (#​6954)
  • Reorganize dataframe files (#​6872) - Thanks @​asmirnov82!
  • Add sample variance and standard deviation to NormalizeMeanVariance (#​6885) - Thanks @​tearlant!
  • Fixes NER to correctly expand/shrink the labels (#​6928)

Bug Fixes

  • Fix SearchSpace reference not being included (#​6951)
  • Rename NameEntity to NamedEntity (#​6917)
  • Fix assert by only accessing idx (#​6924)

Build / Test updates

  • Add Backport github workflow (#​6944)
  • Branding for 3.0.1 (#​6943)
  • Only use semi-colons for NoWarn - fixes build break (#​6935)
  • Update dependencies from dotnet/arcade (#​6703)
  • Update dependencies from dotnet/arcade (#​6957)
  • Migrate to the 'locker' GitHub action for locking closed/stale issues/PRs (#​6896)
  • Make double assertions compare with tolerance instead of precision (#​6923)
  • Don't include the SDK in our helix payload (#​6918)

Documentation Updates

  • Updated ml.net versioning (#​6907)
  • Update developer-guide.md (#​6870) - Thanks @​computerscienceiscool!
  • Update release-3.0.0.md (#​6895) - Thanks @​taeerhebend!

Breaking changes

  • Rename NameEntity to NamedEntity (#​6917)

3.0.0

ML.NET 3.0.0

New Features

  • Add the ability to use Object Detection using TorchSharp (#​6605) - We have added a new deep learning model back by TorchSharp that lets you fine tune your own Object Detection model!
  • Add SamplingKeyColumnName to AutoMLExperiment API (#​6649) - You can now set the SamplingKeyColumnName when you are using AutoML. Thanks @​torronen!
  • Add Object Detection to AutoML Sweeper (#​6633) - Added Object Detection to the AutoML Sweeper so now they can be used together.
  • Add String Vector support to DataFrame (#​6628) - Adds support for String Vectors in DataFrame. This also allows for Better IDataView <-> DataFrame conversions.
  • Add AutoZero tuner to BinaryClassification (#​6615) - Can now use AutoZero tuner in AutoML Binary Classification experiments.
  • Added in fairness assessment and mitigation (#​6539) - Support for fairness assessment and mitigation tool
  • Added in Support for some Intel OneDal Algorithms (#​6521) - You can now use Intel's OneDal for some algorithms. This gives you access to some accelerated versions of these algorithms. The models are fully interoperable between ML.NET's normal models and these, so you can train with OneDal and then still run on machines where OneDal is not supported. Thanks @​rgesteve!
  • Add in ability to have pre-defined weights for ngrams (#​6458) - If you know the weights of your NGrams already you can now directly provide that.
  • Add SentenceSimilarity sweepable estimator in AutoML (#​6445) - Can now use SentenceSimilarity with the sweepable estimator.
  • Add VBufferDataFrameCoumn to DataFrame (#​6409) - Now DataFrame can support the VBuffer from ML.NET so the IDataView <-> DataFrame conversion can work with those types.
  • Added ADO.NET importing/exporting functionality to DataFrame (#​5975) - Can now use ADO.NET import/export with DataFrames. Thanks @​andrei-faber!
  • Added native binaries for Windows Arm64 (#​6813) - This allows certain native transforms to be run on Widows Arm that were disabled before.
  • Switches some computational code to use the new Tensor Primitives package (#​6875)
  • Add QA sweepable estimator in AutoML (#​6781)
  • Add NameEntityRecognition and Q&A deep learning tasks. (#​6760)
  • Adds the ability to load a pre-trained LightGBM file and import it into ML.Net. (#​6569)

Enhancements

  • Expose ExperimentSettings.MaxModel as public (#​6663) - Exposes ExperimentSettings.MaxModel as public so now you can set the number of Max Models you want for an AutoML experiment.
  • Update to latest version of TorchSharp (#​6636) - Updated to the latest version of TorchSharp and fixed any breaking changes so we can take advantage of their new features and bug fixes.
  • Update to latest version of Onnx Runtime (#​6624) - Updated to the latest version of Onnx Runtime and fixed any breaking changes so we can take advantage of their new features and bug fixes.
  • Update ML.NET to compile with .NET8 (#​6641) - Removed some deprecated code now throws errors on .NET8 as well as other minor fixes to allow working/building with .NET8.
  • Added more logging to Object Detection (#​6646) - Added more logging while Object Detection is training so even if epochs take a long time you can be sure things are still moving.
  • Update timeout error message in AutoMLExperiment (#​6613) - Updated the error message so it is more clear what happened.
  • Add batchsize and arch to imageClassification SweepableTrainer (#​6597) - Added batchsize and arch to the ImageClassification SweepableTrainer so those can now be trained on.
  • Update max_model when trial fails (#​6596)
  • Add default search space for standard trainers (#​6576) - Added a default search space for all standard trainers so users have reasonable default values.
  • Adding more metrics to BinaryClassification Experiment (#​6571)
  • Add checkAlive in NasBertTrainer (#​6546) - Now we check between batches if cancellation was requested and stop processing if so.
  • OneDAL - Fallback to default implementation (#​6538) - If you specify you want to use OneDal but something happens that prevents you from using it, like it can't find the binaries/etc, it will auto default back to the normal implementation instead of crashing.
  • Add addKeyValueAnnotationsAsText flag in AutoML (#​6535)
  • Add continuous resource monitoring to AutoML.IMonitor (#​6520) - Thanks @​andrasfuchs!
  • Update WebClient to HttpClient implementations (#​6476) - Update the usage of WebClient to HttpClient since WebClient is now deprecated. Thanks @​rgesteve!
  • Set AutoML trial to unsuccess if trial loss is nan/inf (#​6430) - Now trial will be marked as unsuccesssful if the loss is an invalid number.
  • Add diskConvert option in fast tree search space (#​6316)
  • Avoid Boxing/Unboxing on accessing elements of VBufferDataFrameColumn (#​6867) and (#​6865) - Thanks @​asmirnov82!
  • Update LightGBM to version 3.X.X from 2.X.X (#​6880)
  • Implement vectorized binary arithmetic operations for DataFrames (#​6854) - Thanks @​asmirnov82!
  • Upgrade .NET Interactive (#​6857) - Thanks @​colombod!
  • Improve performance of column cloning inside DataFrame arithmetics (#​6814) - Thanks @​asmirnov82!
  • Add performance benchmarks for dataframe arithmetic operations (#​6827) - Thanks @​asmirnov82!
  • Simplify tt files for PrimitiveDataFrameColumnAritmetics (#​6830) - Thanks @​asmirnov82!
  • Improve performance of DataFrame binary comparison operations (#​6869) - Thanks @​asmirnov82!
  • Allow a CultureInfo to be used for parsing CSV values into DataFrame (#​6782) - Thanks @​asmirnov82!
  • File-scoped namespaces in files under Prediction (Microsoft.ML.Core) (#​6792) - Thanks @​Lehonti!
  • File-scoped namespaces in files under ComponentModel (Microsoft.ML.Core) (#​6788) - Thanks @​Lehonti!
  • File-scoped namespaces in files under Data (Microsoft.ML.Core) (#​6789) - Thanks @​Lehonti!
    ... (truncated)

3.0.0-Preview

ML.NET 3.0.0 Preview

New Features

  • Add the ability to use Object Detection using TorchSharp (#​6605) - We have added a new deep learning model back by TorchSharp that lets you fine tune your own Object Detection model!
  • Add SamplingKeyColumnName to AutoMLExperiment API (#​6649) - You can now set the SamplingKeyColumnName when you are using AutoML. Thanks @​torronen!
  • Add Object Detection to AutoML Sweeper (#​6633) - Added Object Detection to the AutoML Sweeper so now they can be used together.
  • Add String Vector support to DataFrame (#​6628) - Adds support for String Vectors in DataFrame. This also allows for Better IDataView <-> DataFrame conversions.
  • Add AutoZero tuner to BinaryClassification (#​6615) - Can now user AutoZero tuner in AutoML Binary Classification experiments.
  • Added in fairness assessment and mitigation (#​6539) - Support for fairness assessment and mitigation tool
  • Added in Support for some Intel OneDal Algorithms (#​6521) - You can now use Intel's OneDal for some algorithms. This gives you access to some accelerated versions of these algorithms. The models are fully interoperable between ML.NET's normal models and these, so you can train with OneDal and then still run on machines where OneDal is not supported. Thanks @​rgesteve!
  • Add in ability to have pre-defined weights for ngrams (#​6458) - If you know the weights of your NGrams already you can now directly provide that.
  • Add SentenceSimilarity sweepable estimator in AutoML (#​6445) - Can now use SentenceSimilarity with the sweepable estimator.
  • Add VBufferDataFrameCoumn to DataFrame (#​6445) - Now DataFrame can support the VBuffer from ML.NET so the IDataView <-> DataFrame conversion can work with those types.
  • Added ADO.NET importing/exporting functionality to DataFrame (#​5975) - Can now use ADO.NET import/export with DataFrames. Thanks @​andrei-faber!

Enhancements

  • Expose ExperimentSettings.MaxModel as public (#​6663) - Exposes ExperimentSettings.MaxModel as public so now you can set the number of Max Models you want for an AutoML experiment.
  • Update to latest version of TorchSharp (#​6636) - Updated to the latest version of TorchSharp and fixed any breaking changes so we can take advantage of their new features and bug fixes.
  • Update to latest version of Onnx Runtime (#​6624) - Updated to the latest version of Onnx Runtime and fixed any breaking changes so we can take advantage of their new features and bug fixes.
  • Update ML.NET to compile with .NET8 (#​6641) - Removed some deprecated code now throws errors on .NET8 as well as other minor fixes to allow working/building with .NET8.
  • Added more logging to Object Detection (#​6646) - Added more logging while Object Detection is training so even if epochs take a long time you can be sure things are still moving.
  • Update timeout error message in AutoMLExperiment (#​6613) - Updated the error message so it is more clear what happened.
  • Add batchsize and arch to imageClassification SweepableTrainer (#​6597) - Added batchsize and arch to the ImageClassification SweepableTrainer so those can now be trained on.
  • Update max_model when trial fails (#​6596)
  • Add default search space for standard trainers (#​6576) - Added a default search space for all standard trainers so users have reasonable default values.
  • Adding more metrics to BinaryClassification Experiment (#​6571)
  • Add checkAlive in NasBertTrainer (#​6546) - Now we check between batches if cancellation was requested and stop processing if so.
  • OneDAL - Fallback to default implementation (#​6538) - If you specify you want to use OneDal but something happens that prevents you from using it, like it can't find the binaries/etc, it will auto default back to the normal implementation instead of crashing.
  • Add addKeyValueAnnotationsAsText flag in AutoML (#​6535)
  • Add continuous resource monitoring to AutoML.IMonitor (#​6520) - Thanks @​andrasfuchs!
  • Update WebClient to HttpClient implementations (#​6476) - Update a usage of WebClient to HttpClient since WebClient is now deprecated. Thanks @​rgesteve!
  • Set AutoML trial to unsuccess if trial loss is nan/inf (#​6430) - Now trial will be marked as unsuccesssful if the loss is an invalid number.
  • Add diskConvert option in fast tree search space (#​6316)

Bug Fixes

  • Fix DataFrame ToString (#​6673) - Use correct alignment for columns to produce readable output when columns have longer names. Thanks @​asmirnov82!
  • Fix DataFrame null math (#​6661) - Fixes max in DataFrame columns when there are null values to match what Pandas does.
  • Clean up PrimitiveColumnContainer (#​6656) - Cleaned up the code in PrimitiveColumnContainer so its more correct and easier to use.
  • Fix Apply in PrimitiveColumnContainer (#​6642) - Fixes the Apply method so it no longer changes the source column. Thanks @​janholo!
  • Fix datetime null error (#​6627) - Fixes loading a null datetime from a database so it now returns correctly instead of throwing an error.
  • Fix AggregateTrainingStopManager is trying to cancel disposed tokens (#​6612) - Will no longer try and cancel already disposed tokens.
  • Fix tostring bug for sweepable pipeline (#​6610)
  • Change Test to Validate in Dataset manager (#​6599)
  • Fixed System.OperationCanceledException when calling experimentResult.BestRun.Estimator.Fit (#​6572)
  • Fixed cancellation bug in SweepablePipelineRunner && Fixed object null exception in AutoML v1.0 regression API (#​6560)
  • Fixed one dal dispatching issues (#​6547) - OneDal now dispatches correctly.
  • Fixed Multi-threaded access issue (#​6537) - Fixed a multi-threaded access issue for variable length string arrays in ONNX models.
  • Fixed AutoML experiments in non declarative style not working (#​6447)

Build / Test updates

... (truncated)

2.0.1-Preview

Minor update for 2.0.0 that introduces a new api for ProduceWordBag so you can pass in a column that already has the weights set.

Commits viewable in compare view.

Updated Microsoft.ML.FastTree from 1.7.1 to 5.0.0.

Release notes

Sourced from Microsoft.ML.FastTree's releases.

5.0.0

ML.NET 5.0.0

New Features

  • [GenAI] Introduce CausalLMPipelineChatClient for MEAI.IChatClient (#​7270)
  • Introducing SentencePiece Unigram Tokenizer Model (#​7390)
  • Phi-4 Tokenizer Support (#​7396)
  • Support O3 OpenAI model mapping (#​7394)
  • Support ByteLevel encoding in Bpe tokenizer to support DeepSeek model (#​7425)
  • Support Tiktoken Gpt-4.1 Model (#​7453)
  • Support OpenAI OSS Models with Tiktoken tokenizer (#​7494)
  • Add deterministic option for LightGBM (#​7415)
  • Added NumberOfLeaves to FastForestRegression and FastForestOva options (#​7499) - Thanks @​JoshuaSloan!

Enhancements

  • Add Timeout to Regex used in the tokenizers (#​7284)
  • Final tokenizer's cleanup (#​7291)
  • Update System.Numerics.Tensors version (#​7322) - Thanks @​asmirnov82!
  • [GenAI] SFT Example (#​7316)
  • Update M.E.AI version used by Microsoft.ML.GenAI.Core (#​7329)
  • Update DependencyModel (#​7338)
  • Some tweaks to the Microsoft.ML.Tokenizers PACKAGE.md (#​7360)
  • Consolidate System.Numerics.Tensors dependency (#​7356) - Thanks @​asmirnov82!
  • Update Microsoft.Extensions.AI to 9.3.0-preview.1.25114.11 (#​7388)
  • Create SentencePieceTokenizer from options object (#​7403)
  • Unigram tokenizer fixes (#​7409)
  • Update to M.E.AI 9.3.0-preview.1.25161.3 (#​7414)
  • Reduce usage of unsafe constructs throughout codebase (#​7426) - Thanks @​GrabYourPitchforks!
  • Cleanup SentencePiece tokenizer (#​7427)
  • Update to M.E.AI 9.4.0-preview.1.25207.5 (#​7439)
  • Update to M.E.AI 9.4.3-preview.1.25230.7 (#​7459)
  • Update to stable Microsoft.Extensions.AI.Abstractions (#​7466)
  • Convert repository to NuGet Central Package Management (#​7482)
  • Rename Casual to Causal (#​7484) - Thanks @​feiyun0112!
  • Updated Tensorflow.Net to 0.70.2 with Tensorflow 2.7.0. (#​7472) - Thanks @​Crichen!
  • Mark internal classes as internal (#​7511)
  • Address the design review feedback (#​7513)
  • BpeTokenizer Cleanup (#​7514)
  • Improve native build and mark our official build as CFS Clean (#​7516)
  • Improve unique directory generation for temp files (#​7520)
  • Updating OnnxRuntime (#​7469)

Bug Fixes

  • Fix broken inheritance from DataFrameColumn class (#​7324) - Thanks @​asmirnov82!
  • Moved SpecialTokens assignment after the modification to avoid "Collection Modified" error (#​7328) - Thanks @​shaltielshmid!
  • Fix DateTime export to csv with culture info (#​7358) - Thanks @​asmirnov82!
  • Increase cancelling waiting time for AutoMLExperiment_return_current_best_trial_when_ct_is_canceled_with_trial_completed_Async (#​7424)
  • Fixed light gbm update (#​7431)
  • Fix incorrect IntPtr null check in FftUtils (#​7434) - Thanks @​GrabYourPitchforks!
  • ImageClassificationTrainer PredictedLabelColumnName bug when the name is not default (#​7458) - Thanks @​feiyun0112!
  • Fix ElementwiseGreaterThanOrEqual to use >= instead of == (#​7475) - Thanks @​vsarakhan!
    ... (truncated)

5.0.0-preview1

ML.NET 5.0-preview.1

New Features

  • Introducing SentencePiece Unigram Tokenizer Model (#​7390)
  • Phi-4 Tokenizer Support (#​7396)

Enhancements

  • Support O3 OpenAI model mapping (#​7394)

Bug Fixes

  • Fix DateTime export to csv with culture info (#​7358) - Thanks @​asmirnov82!
  • Moved SpecialTokens assignment after the modification to avoid "Collection Modified" error (#​7328) - Thanks @​shaltielshmid!
  • Fix broken inheritance from DataFrameColumn class (#​7324) - Thanks @​asmirnov82!

Build / Test updates

  • [main] Update dependencies from dotnet/arcade (#​7387)
  • Update Microsoft.Extensions.AI to 9.3.0-preview.1.25114.11 (#​7388)
  • Update MSTest to latest (#​7349)
  • [main] Update dependencies from dotnet/arcade (#​7352)
  • Consolidate System.Numerics.Tensors dependency (#​7356) - Thanks @​asmirnov82!
  • [main] Update dependencies from dotnet/arcade (#​7382)
  • [main] Update dependencies from dotnet/arcade (#​7376)
  • [main] Update dependencies from dotnet/arcade (#​7374)
  • Net8 tests (#​7319)
  • [main] Update dependencies from dotnet/arcade (#​7266)
  • Update DependencyModel (#​7338)
  • Update M.E.AI version used by Microsoft.ML.GenAI.Core (#​7329)
  • Update System.Numerics.Tensors version (#​7322) - Thanks @​asmirnov82!

Documentation Updates

  • Fix up docs for MLContext (#​7334)
  • Some tweaks to the Microsoft.ML.Tokenizers PACKAGE.md (#​7360)
  • [GenAI] SFT Example (#​7316)
  • Update dynamic loading report reference (#​7321) - Thanks @​emmanuel-ferdman!

4.0.3

ML.NET 4.0.3

Bug Fixes

  • [release/4.0] Improve unique directory generation for temp files (#​7528)

    • Compatibility note: This change resolves a performance problem where past versions of ML.NET would leave behind folders with the pattern ml_dotnet\d+ in the temp directory, which would cause model opening performance to degrade. This fixes the problem. You may also wish to delete these empty folders once after updating.

      Using powershell:

      Get-ChildItem "$env:TEMP" -Directory -Filter "ml_dotnet*" | Remove-Item -Recurse -Force

      Using Bash:

      find "$TEMP" -type d -name "ml_dotnet*" -exec rm -rf {} +

Build / Test updates

  • [release/4.0] Update dependencies from dotnet/arcade (#​7470)
  • [release/4.0] Use arcade script for installing MacOS dependencies (#​7534)

4.0.2

ML.NET 4.0.2

Enhancements

  • [release/4.0] Support O3 OpenAI model mapping #​7395 (#​7395)

Build / Test updates

  • [release/4.0] Update dependencies from dotnet/arcade (#​7369)
  • [release/4.0] Update dependencies from dotnet/arcade (#​7377)
  • [release/4.0] Update dependencies from dotnet/arcade (#​7386)

4.0.1

ML.NET Servicing Release 4.0.1

Bug Fixes

  • Fix the BERT tokenizer to handle special tokens correctly. (#​7330) - Thanks @​shaltielshmid
  • Fix broken inheritance from DataFrameColumn class (#​7324) (#​7331) - Thanks @​asmirnov82!

Build / Test updates

  • Update System.Numerics.Tensors version (#​7322) (#​7355) - Thanks @​asmirnov82!
  • [release/4.0] Update dependencies from dotnet/arcade (#​7327)
  • Update MicrosoftExtensionsDependencyModelVersion (#​7342)

Documentation Updates

  • [release/4.0] Some tweaks to the Microsoft.ML.Tokenizers PACKAGE.md (#​7364)
  • [release/4.0] Fix up docs for MLContext (#​7363)

4.0.0-preview1

What's Changed

3.0.1

ML.NET 3.0.1

New Features

  • Add support for Apache.Arrow.Types.TimestampType to DataFrame (#​6871) - Thanks @​asmirnov82!

Enhancements

  • Update TorchSharp to latest version (#​6954)
  • Reorganize dataframe files (#​6872) - Thanks @​asmirnov82!
  • Add sample variance and standard deviation to NormalizeMeanVariance (#​6885) - Thanks @​tearlant!
  • Fixes NER to correctly expand/shrink the labels (#​6928)

Bug Fixes

  • Fix SearchSpace reference not being included (#​6951)
  • Rename NameEntity to NamedEntity (#​6917)
  • Fix assert by only accessing idx (#​6924)

Build / Test updates

  • Add Backport github workflow (#​6944)
  • Branding for 3.0.1 (#​6943)
  • Only use semi-colons for NoWarn - fixes build break (#​6935)
  • Update dependencies from dotnet/arcade (#​6703)
  • Update dependencies from dotnet/arcade (#​6957)
  • Migrate to the 'locker' GitHub action for locking closed/stale issues/PRs (#​6896)
  • Make double assertions compare with tolerance instead of precision (#​6923)
  • Don't include the SDK in our helix payload (#​6918)

Documentation Updates

  • Updated ml.net versioning (#​6907)
  • Update developer-guide.md (#​6870) - Thanks @​computerscienceiscool!
  • Update release-3.0.0.md (#​6895) - Thanks @​taeerhebend!

Breaking changes

  • Rename NameEntity to NamedEntity (#​6917)

3.0.0

ML.NET 3.0.0

New Features

  • Add the ability to use Object Detection using TorchSharp (#​6605) - We have added a new deep learning model back by TorchSharp that lets you fine tune your own Object Detection model!
  • Add SamplingKeyColumnName to AutoMLExperiment API (#​6649) - You can now set the SamplingKeyColumnName when you are using AutoML. Thanks @​torronen!
  • Add Object Detection to AutoML Sweeper (#​6633) - Added Object Detection to the AutoML Sweeper so now they can be used together.
  • Add String Vector support to DataFrame (#​6628) - Adds support for String Vectors in DataFrame. This also allows for Better IDataView <-> DataFrame conversions.
  • Add AutoZero tuner to BinaryClassification (#​6615) - Can now use AutoZero tuner in AutoML Binary Classification experiments.
  • Added in fairness assessment and mitigation (#​6539) - Support for fairness assessment and mitigation tool
  • Added in Support for some Intel OneDal Algorithms (#​6521) - You can now use Intel's OneDal for some algorithms. This gives you access to some accelerated versions of these algorithms. The models are fully interoperable between ML.NET's normal models and these, so you can train with OneDal and then still run on machines where OneDal is not supported. Thanks @​rgesteve!
  • Add in ability to have pre-defined weights for ngrams (#​6458) - If you know the weights of your NGrams already you can now directly provide that.
  • Add SentenceSimilarity sweepable estimator in AutoML (#​6445) - Can now use SentenceSimilarity with the sweepable estimator.
  • Add VBufferDataFrameCoumn to DataFrame (#​6409) - Now DataFrame can support the VBuffer from ML.NET so the IDataView <-> DataFrame conversion can work with those types.
  • Added ADO.NET importing/exporting functionality to DataFrame (#​5975) - Can now use ADO.NET import/export with DataFrames. Thanks @​andrei-faber!
  • Added native binaries for Windows Arm64 (#​6813) - This allows certain native transforms to be run on Widows Arm that were disabled before.
  • Switches some computational code to use the new Tensor Primitives package (#​6875)
  • Add QA sweepable estimator in AutoML (#​6781)
  • Add NameEntityRecognition and Q&A deep learning tasks. (#​6760)
  • Adds the ability to load a pre-trained LightGBM file and import it into ML.Net. (#​6569)

Enhancements

  • Expose ExperimentSettings.MaxModel as public (#​6663) - Exposes ExperimentSettings.MaxModel as public so now you can set the number of Max Models you want for an AutoML experiment.
  • Update to latest version of TorchSharp (#​6636) - Updated to the latest version of TorchSharp and fixed any breaking changes so we can take advantage of their new features and bug fixes.
  • Update to latest version of Onnx Runtime (#​6624) - Updated to the latest version of Onnx Runtime and fixed any breaking changes so we can take advantage of their new features and bug fixes.
  • Update ML.NET to compile with .NET8 (#​6641) - Removed some deprecated code now throws errors on .NET8 as well as other minor fixes to allow working/building with .NET8.
  • Added more logging to Object Detection (#​6646) - Added more logging while Object Detection is training so even if epochs take a long time you can be sure things are still moving.
  • Update timeout error message in AutoMLExperiment (#​6613) - Updated the error message so it is more clear what happened.
  • Add batchsize and arch to imageClassification SweepableTrainer (#​6597) - Added batchsize and arch to the ImageClassification SweepableTrainer so those can now be trained on.
  • Update max_model when trial fails (#​6596)
  • Add default search space for standard trainers (#​6576) - Added a default search space for all standard trainers so users have reasonable default values.
  • Adding more metrics to BinaryClassification Experiment (#​6571)
  • Add checkAlive in NasBertTrainer (#​6546) - Now we check between batches if cancellation was requested and stop processing if so.
  • OneDAL - Fallback to default implementation (#​6538) - If you specify you want to use OneDal but something happens that prevents you from using it, like it can't find the binaries/etc, it will auto default back to the normal implementation instead of crashing.
  • Add addKeyValueAnnotationsAsText flag in AutoML (#​6535)
  • Add continuous resource monitoring to AutoML.IMonitor (#​6520) - Thanks @​andrasfuchs!
  • Update WebClient to HttpClient implementations (#​6476) - Update the usage of WebClient to HttpClient since WebClient is now deprecated. Thanks @​rgesteve!
  • Set AutoML trial to unsuccess if trial loss is nan/inf (#​6430) - Now trial will be marked as unsuccesssful if the loss is an invalid number.
  • Add diskConvert option in fast tree search space (#​6316)
  • Avoid Boxing/Unboxing on accessing elements of VBufferDataFrameColumn (#​6867) and (#​6865) - Thanks @​asmirnov82!
  • Update LightGBM to version 3.X.X from 2.X.X (#​6880)
  • Implement vectorized binary arithmetic operations for DataFrames (#​6854) - Thanks @​asmirnov82!
  • Upgrade .NET Interactive (#​6857) - Thanks @​colombod!
  • Improve performance of column cloning inside DataFrame arithmetics (#​6814) - Thanks @​asmirnov82!
  • Add performance benchmarks for dataframe arithmetic operations (#​6827) - Thanks @​asmirnov82!
  • Simplify tt files for PrimitiveDataFrameColumnAritmetics (#​6830) - Thanks @​asmirnov82!
  • Improve performance of DataFrame binary comparison operations (#​6869) - Thanks @​asmirnov82!
  • Allow a CultureInfo to be used for parsing CSV values into DataFrame (#​6782) - Thanks @​asmirnov82!
  • File-scoped namespaces in files under Prediction (Microsoft.ML.Core) (#​6792) - Thanks @​Lehonti!
  • File-scoped namespaces in files under ComponentModel (Microsoft.ML.Core) (#​6788) - Thanks @​Lehonti!
  • File-scoped namespaces in files under Data (Microsoft.ML.Core) (#​6789) - Thanks @​Lehonti!
    ... (truncated)

3.0.0-Preview

ML.NET 3.0.0 Preview

New Features

  • Add the ability to use Object Detection using TorchSharp (#​6605) - We have added a new deep learning model back by TorchSharp that lets you fine tune your own Object Detection model!
  • Add SamplingKeyColumnName to AutoMLExperiment API (#​6649) - You can now set the SamplingKeyColumnName when you are using AutoML. Thanks @​torronen!
  • Add Object Detection to AutoML Sweeper ([#​...

Description has been truncated

@dependabot
Bump Microsoft.ML and Microsoft.ML.FastTree
47bf6bc 
Bumps Microsoft.ML from 1.7.1 to 5.0.0
Bumps Microsoft.ML.FastTree from 1.7.1 to 5.0.0

---
updated-dependencies:
- dependency-name: Microsoft.ML
  dependency-version: 5.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: Microsoft.ML.FastTree
  dependency-version: 5.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
@dependabot dependabot bot added .NET Pull requests that update .NET code dependencies Pull requests that update a dependency file labels Nov 12, 2025
@dependabot dependabot bot mentioned this pull request Nov 12, 2025
Closed
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