Is TorchText implemented?

[przemyslawbak]

For TorchSharp text classification example there is TorchText used to load data set.

I am not sure what I am doing wrong, but I can not find any usings to import this library.

For TorchSharp MNIST example I did manage to find and install proper NuGet to use torchvision.

Is TorchText implemented for .NET?

If not, alternatively, how can I load data from CSV file? I do not know what data type should be used for var reader in the example? Im confused.

[yueyinqiu]

I think we don't have torchtext support currently, and I've found the class in Examples.Utils.

[NiklasGustafsson]

We do not have that implemented.

Maybe @luisquintanilla can comment on some of the text-based preprocessing primitives we've added to ML.NET -- there's a few new tokenizers there, which should be usable with TorchSharp.

[GeorgeS2019]

@LittleLittleCloud

Could you share your view which of the recent progress in ML.NET, regarding deep NLP, could be relevant for advancing TorchText project using TorchSharp?

References

• Causal language model pipeline? #1340
• Torchsharp for Language Translation: Eng-Fra #1103
• [WIP: Apr2025] TorchText #590
• [WIP 2023] Integrating Custom PyTorch c++ Extensions #610

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TorchText from Pytorch

PyTorch TorchText

torchtext.nn
torchtext.data.functional
torchtext.data.metrics
torchtext.data.utils
torchtext.datasets
torchtext.vocab
torchtext.utils
torchtext.transforms
torchtext.functional
torchtext.models

Tutorials

• Text classification with XLM-RoBERTa mode
• T5-Base Model for Summarization, Sentiment Classification, and Translation

---

Tokenizers/Traansform from PyTorch

https://pytorch.org/text/stable/transforms.html

Tokenizers

• SentencePieceTokenizer
• GPT2BPETokenizer
• CLIPTokenizer
• RegexTokenizer
• BERTTokenizer
• CharBPETokenizer

Transform

• VocabTransform
• PadTransform
• StrToIntTransform

Utils

ToTensor
LabelToIndex
Truncate
AddToken
Sequential

---

Microsoft.ML.Tokenizers

Microsoft.ML.Tokenizers

• Microsoft.ML.Tokenizers
• Microsoft.ML.Tokenizers.Data.Cl100kBase
• Microsoft.ML.Tokenizers.Data.Gpt2
• Microsoft.ML.Tokenizers.Data.O200kBase
• Microsoft.ML.Tokenizers.Data.P50kBase
• Microsoft.ML.Tokenizers.Data.R50kBase

---

# Microsoft.ML.Tokenizers

Models

• BPETokenizer.cs
• BertTokenizer.cs
• CodeGenTokenizer.cs
• EnglishRobertaTokenizer.cs
• LlamaTokenizer.cs
• Phi2Tokenizer.cs
• SentencePieceTokenizer.cs
• TiktokenTokenizer.cs
• WordPieceTokenizer.cs

---

• Merge.cs
• ModelSourceGenerationContext.cs
• Pair.cs
• Symbol.cs
• Word.cs
• Cache.cs

Normalizers

• BertNormalizer.cs
• LowerCaseNormalizer.cs
• Normalizer.cs
• SentencePieceNormalizer.cs
• UpperCaseNormalizer.cs

PreTokenizers

• PreTokenizer.cs
• RegexPreTokenizer.cs
• RobertaPreTokenizer.cs