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Spectra is a general purpose planning system. It extends STRIPS-style planning by allowing arbitrary DCEC and first-order formulae for state descriptions, background knowledge, and action descriptions rather than just predicates. This allows, for instance, handling domains with infinite or unbounded objects elegantly (among other things). Spectra is a general purpose planning system. It extends STRIPS-style planning by allowing arbitrary DCEC and first-order formulae for state descriptions, background knowledge, and action descriptions rather than just predicates. This allows, for instance, handling domains with infinite or unbounded objects elegantly (among other things).
[Overview Presentation (pdf)](https://drive.google.com/open?id=1RHulFDgASACBkjvl-8ZEidj50NbGmKPu) [System Description Publication (2024)](https://rdcu.be/dIJ7F)
[Overview Presentation (2017)](https://drive.google.com/open?id=1RHulFDgASACBkjvl-8ZEidj50NbGmKPu)
* Drawbacks of propositional planning (current planning systems): * Drawbacks of propositional planning (current planning systems):
* **Expressivity**: Cannot express arbitrary constraints. *“At every step make sure that no two blocks on the table have same color”* * **Expressivity**: Cannot express arbitrary constraints. *“At every step make sure that no two blocks on the table have same color”*
* **Domain Size**: Scaling to large domains of arbitrary sizes poses difficulty. * **Domain Size**: Scaling to large domains of arbitrary sizes poses difficulty.
## Example Problem Files
See the [example problems](https://github.com/RAIRLab/Spectra/tree/master/src/main/resources/org/rairlab/planner/problems)
## Installation ## Installation
**Make sure you have Java 17 installed! While ShadowProver will, Spectra will not compile on Java 8.**
First, we need to make sure ShadowProver is installed. First, we need to make sure ShadowProver is installed.
```bash ```bash
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./run_spectra.sh [problem_file_path] ./run_spectra.sh [problem_file_path]
``` ```
## Cite
```
## Spectra's Architecture ## @article{Rozek2024,
author={Rozek, Brandon and Bringsjord, Selmer},
title={Spectra: An Expressive STRIPS-Inspired AI Planner Based on Automated Reasoning},
![spectra-arch.png](https://bitbucket.org/repo/Mjq4bX/images/2495888298-spectra-arch.png) journal={KI - K{\"u}nstliche Intelligenz},
year={2024},
## Example Input File ## month={May},
day={22},
![examples.png](https://bitbucket.org/repo/Mjq4bX/images/3136509575-examples.png) issn={1610-1987},
doi={10.1007/s13218-024-00847-8},
url={https://doi.org/10.1007/s13218-024-00847-8}
}
```