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A bare-bones Python library for quality diversity optimization.

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### Description Following the plots in Mouret and Clune 2015 (the MAP-Elites paper), we could extend heatmap functions to plot multi-dimensional heatmaps. Users would be able to specify a dimension...

enhancement

### Description A data parameter would contain an earlier snapshot of the archive as a Pandas dataframe. This parameter would allow one to plot an earlier version of the archive...

enhancement

### Description An example with an environment from [QDGym](https://github.com/ollenilsson19/QDgym) would be great.

enhancement

### Description Currently, Colab links are created in `docs/_templates/sourcelink.html`. However, this assumes the notebooks are either 1) under the docs directory or 2) under the `examples/tutorials` directory. Furthermore, the links...

documentation
priority: low

## References - https://github.com/hardmaru/pytorch_notebooks/blob/master/mnist_es/pytorch_mnist_mini_es_cma.ipynb

priority: low

## Description Write a tutorial for using cma_mae to generate images of dogs. ## TODO - [ ] Fix dependency on `torch_utls` and `dnnlibs`. ## Status - [ ] I...

## Description In this PR, we modify archive_base to implement archive thresholds from CMA-MAE. In addition to that, we also revive old implementation of `add_single`, which was removed in (#221)...

## Description Replace alive_progress with tqdm in examples since tqdm is more well-known and easier to use. ## TODO - [x] Replace in sphere.py - [x] Replace in lunar_lander.py ##...

## Description Fix tutorials that were broken by previous changes. ## TODO - [x] [Lunar Lander](https://docs.pyribs.org/en/latest/tutorials/lunar_lander.html) - [x] [LSI MNIST](https://docs.pyribs.org/en/latest/tutorials/lsi_mnist.html) - [x] [Arm Repertoire](https://docs.pyribs.org/en/latest/tutorials/arm_repertoire.html) - [x] [Fooling MNIST](https://docs.pyribs.org/en/latest/tutorials/fooling_mnist.html) - [x]...

## Description This PR presents a prototype of the CQD Score computation, only for GridArchive. ## TODO ## Questions ## Status - [x] I have read the guidelines in [CONTRIBUTING.md](https://github.com/icaros-usc/pyribs/blob/master/CONTRIBUTING.md)...