argamak 🐎

A Gleam library for tensor maths.

“I admire the elegance of your method of computation; it must be nice to ride through these fields upon the horse of true mathematics while the like of us have to make our way laboriously on foot.”

—Albert Einstein, to Tullio Levi-Civita, circa 1915–1917

Installation

Mix

# mix.exs
defp deps do
  [
    {:nx, "~> 0.1.0-dev", github: "elixir-nx/nx", branch: "main", sparse: "nx"},
    {:argamak, "~> 0.1"},
  ]
end

For the Erlang compilation target, argamak depends on Elixir.Nx and, for the time being, is easiest to use as a dependency of a Mix project.

Usage

// derby.gleam
import argamak/space
import argamak/tensor

pub type Axis {
  Horse
  Trial
}

pub fn print_times(from list: List(Float)) {
  assert Ok(space) = space.d2(#(Horse, 3), #(Trial, -1))
  try tensor = tensor.from_floats(of: list, into: space)

  tensor
  |> tensor.print(wrap_at: -1, meta: True)
  |> Ok
}

Example

> derby.print_times(from: [1.2, 1.3, 1.3, 1., 1.5, 0.9])
// Tensor
// format: Float32
// space: D2 #(Horse, 3), #(Trial, 2)
// data:
// [[1.2, 1.3],
//  [1.3, 1.0],
//  [1.5, 0.9]]
Ok(Nil)