marcovirgolin / pyfe

Fast evaluation of symbolic expressions in C++

pyfe

Fast evaluation of symbolic expressions in C++ with a Python interface. The core algorithm is by mnzluca.

Installation

Install the conda environment, then compile and install with make:

conda env create -f environment.yml
conda activate pyfe
make

Usage

Expressions need to be in prefix notation, with comma-separated terms. The dataset must be a np.ndarray. Here's an example:

import numpy as np
from pyfe import fast

np.random.seed(42)
dataset = np.random.rand(5, 2)

expressions = ["+,-,x_1,x_0,2", "+,*,x_0,2.3,-1.2"]

result = fast.eval(expressions, dataset)
print(result)