andrewherren

isotree

(Python, R, C/C++) Isolation Forest and variations such as SCiForest and EIF, with some additions (outlier detection + similarity + NA imputation)

zimt

header-only C++ template library to process n-dimensional arrays with multithreaded SIMD code

HVM

A massively parallel, optimal functional runtime in Rust

Bend

A massively parallel, high-level programming language

possum

POSterior SUMmarization

scikit-sparse

Sparse matrix tools extending scipy.sparse, but with incompatible licenses

circle

The compiler is available for download. Get it!

tiny-gpu

A minimal GPU design in Verilog to learn how GPUs work from the ground up

checkmate

Fast and versatile argument checks

llm.c

LLM training in simple, raw C/CUDA

Tiger

C++ Matrix -- High performance and accurate (e.g. edge cases) matrix math library with expression template arithmetic operators

polars_ols

Polars least squares extension - enables fast linear model polar expressions

nimble

The base NIMBLE package for R

bartz

A JAX implementation of BART (Bayesian Additive Regression Trees)

action-vendir

A GitHub action to execute vendir

js-pytorch

A JavaScript library like PyTorch, built from scratch.

parttree

R package for plotting simple decision tree partitions

pyinstrument

🚴 Call stack profiler for Python. Shows you why your code is slow!

experimental_json_builder

Experimental JSON builder based on C++ reflection

micrograd-cuda

duckdb-r

The duckdb R package

autoppl

C++ template library for probabilistic programming

concepts-guide

A quick overview of how to use concepts and what they're about

FastAD

FastAD is a C++ implementation of automatic differentiation both forward and reverse mode.

ruff

An extremely fast Python linter and code formatter, written in Rust.

cppcon2023

Code for "SPSC Lock-free, Wait-free Fifo from the Ground Up" presentation at CPPCON 2023

parser

A C++ parser combinator library.

extratests

Integration and other testing for tidymodels

highway

Performance-portable, length-agnostic SIMD with runtime dispatch

gemma.cpp

lightweight, standalone C++ inference engine for Google's Gemma models.