RecursiveAI.OneNlp.Models.English 1.0.0

dotnet add package RecursiveAI.OneNlp.Models.English --version 1.0.0
                    
NuGet\Install-Package RecursiveAI.OneNlp.Models.English -Version 1.0.0
                    
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="RecursiveAI.OneNlp.Models.English" Version="1.0.0" />
                    
For projects that support PackageReference, copy this XML node into the project file to reference the package.
<PackageVersion Include="RecursiveAI.OneNlp.Models.English" Version="1.0.0" />
                    
Directory.Packages.props
<PackageReference Include="RecursiveAI.OneNlp.Models.English" />
                    
Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package.
paket add RecursiveAI.OneNlp.Models.English --version 1.0.0
                    
#r "nuget: RecursiveAI.OneNlp.Models.English, 1.0.0"
                    
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
#:package RecursiveAI.OneNlp.Models.English@1.0.0
                    
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package.
#addin nuget:?package=RecursiveAI.OneNlp.Models.English&version=1.0.0
                    
Install as a Cake Addin
#tool nuget:?package=RecursiveAI.OneNlp.Models.English&version=1.0.0
                    
Install as a Cake Tool

RecursiveAI.OneNLP.Models.English

spaCy-class NLP for .NET. The English fast-tier model for RecursiveAI.OneNlp: add this package and the Nlp verbs analyze English text with tags, morphology, lemmas, a dependency parse and named entities. No downloads, no native code, NativeAOT and trim clean. Unaffiliated with other projects named OneNLP.

Measured. UD English-EWT r2.18 test (and UNER English-EWT test for entities), against spaCy 3.8.18 trained with its default configuration on the same data (95% paired bootstrap intervals are in the results table). Gold words: UPOS 94.16 against 94.29, UFeats 95.15 against 95.18, lemmas 96.11 against 95.80 and LAS 81.53 against 81.96 (all within noise). Raw text: UPOS 92.90 against 92.45 and LAS 77.26 against 78.53 (within noise), lemmas 95.03 against 93.69 (ahead). Entities micro F1 63.09 against 62.32 (within noise). Misses: raw MLAS is 65.30 against spaCy's 69.05 (behind; an information row, not a gated one). Data lineage: UD English-EWT and UNER English-EWT (CC BY-SA 4.0), plus web text (FineWeb, ODC-By 1.0; English Wikipedia, CC BY-SA) labelled by our previous English model; the weights carry share-alike lineage where the data does. Size: 112.0 MiB of weights. Speed against the managed reference is measured at the release gate.

using RecursiveAI.OneNlp;

Doc doc = Nlp.Analyze("Ada Lovelace wrote the first program in London.");
foreach (Token t in doc)
{
    Console.WriteLine($"{t} {t.Pos} {t.Lemma} {t.Dep}");
}

foreach (Span e in Nlp.Entities("Ada Lovelace lived in London."))
{
    Console.WriteLine($"{e.Label} {e}");
}

The package adds a small source file to the project that references it; that file registers the model when the program starts. Programs that cannot compile it call EnglishModel.Register() once.

The weights are trained on Universal Dependencies English-EWT and Universal NER English-EWT (both CC BY-SA 4.0), and on web text (FineWeb, ODC-By 1.0; English Wikipedia, CC BY-SA) labelled by our own previous English model, all credited in THIRD-PARTY-NOTICES.md; PROVENANCE.md lists every dataset, recipe and seed. The weights are licensed MIT OR Apache-2.0.

Copyright (c) Recursive AI, LLC.

Product Compatible and additional computed target framework versions.
.NET net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

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Version Downloads Last Updated
1.0.0 0 11/8/2026

See CHANGELOG.md in the repository.