Cortex 1.1.0

.NET 10.0 This package targets .NET 10.0. The package is compatible with this framework or higher. 
dotnet add package Cortex --version 1.1.0
                    


                    

                
NuGet\Install-Package Cortex -Version 1.1.0
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="Cortex" Version="1.1.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Cortex" Version="1.1.0" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Cortex" />
                    


                            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 Cortex --version 1.1.0
                    


                    

                
#r "nuget: Cortex, 1.1.0"
#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 Cortex@1.1.0
#: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=Cortex&version=1.1.0
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Cortex&version=1.1.0
                    


                            Install as a Cake Tool

Cortex

A high-performance, pandas-like DataFrame library for .NET backed by Apache Arrow with SIMD acceleration.

Part of the Cortex data science ecosystem for .NET.

Requires .NET 10+

Features

  • Arrow-backed columnar storage for cache-friendly, zero-copy data access
  • SIMD-accelerated operations for blazing-fast numeric computation
  • Rich I/O — CSV, Parquet, Excel, JSON, Avro, ORC, and HTML out of the box
  • Expressive API — filtering, grouping, joining, pivoting, and reshaping
  • Lazy evaluation — deferred query execution with filter/sort/select optimization
  • Native C accelerators for quantile and aggregation hot paths
  • Dictionary-encoded strings for O(K) categorical operations

Installation

dotnet add package Cortex

Quick Start

using Cortex;

var df = DataFrame.ReadCsv("sales.csv");

var summary = df.GroupBy("region")
    .Agg(x => x.Sum("revenue"), x => x.Mean("quantity"))
    .SortBy("revenue", ascending: false);

summary.Head(10).Print();

Filtering and Boolean Indexing

// Boolean indexing
var senior = df[df["Age"].Gt(28)];

// Query expressions
var filtered = df.Query("Salary > 55000");

// Arithmetic operators on columns
var bonus = df.GetColumn<double>("Salary") * 0.1;

Lazy Evaluation

var result = df.Lazy()
    .Filter(Col("Age") > Lit(25))
    .Sort("Salary", ascending: false)
    .Select("Name", "Salary")
    .Head(10)
    .Collect();

I/O

// Auto-detect format from extension
var df = DataFrameIO.Load("data.parquet");  // .csv, .json, .arrow, .xlsx, .avro, .orc
df.Save("output.csv.gz");                    // gzip-compressed
Package Description
Cortex.ML Machine learning models and transformers
Cortex.Viz Plotly chart generation and dashboards
Cortex.GPU GPU-accelerated DataFrame operations
Cortex.IO.Database SQL database I/O with push-down
Cortex.TimeSeries ARIMA, SARIMA, and Holt-Winters forecasting
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 (16)

Showing the top 5 NuGet packages that depend on Cortex:

Package Downloads
Cortex.ML

Machine learning toolkit for Cortex: tensors, feature engineering, pipelines, evaluation
Cortex.Streaming

Real-time micro-batch streaming engine for Cortex DataFrames
Cortex.Cloud

Cloud storage adapters for Cortex — read/write DataFrames from S3, Azure Blob, and GCS
Cortex.Plot

Package Description
Cortex.Flight

Arrow Flight RPC for distributed DataFrame transport and Flight SQL

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
1.1.0 186 3/30/2026
1.0.0 185 3/27/2026