This repository contains the code for neural network emulation of stellar population synsthesis (SPS) models for galaxy spectra, associated with the paper Alsing et. al 2019, arXiv 1911.11778. If you use this code, kindly cite that paper.
You can install the code with pip: pip install git+https://github.com/justinalsing/speculator.git
The code is in python3 and has the following dependencies:
tensorflow (>2.0)
scikit-learn
numpy
A basic demo of loading and calling a pre-trained model (Prospector-alpha) can be found in examples/speculator_demo.ipynb. For training your own model, you can use the template given in examples/speculator_training_demo.ipynb.
We will be expanding this repository with additional models and demonstrations of how to train your own models. Meanwhile, if you require a particular model or would like to collaborate on building an SPS emulator for a particular case/project, feel free to get in touch at justin.alsing@fysik.su.se