Data Decision Diagrams with a pythonic interface

This library provides a Python binding for the Data Decision Diagrams library libDDD. Compared to pyddd, daddy provides a much higher-level interface with an easy Pythonic API.

Requirements

• Python 3
• sympy
• Cython (for installation)
• requests (for installation)

libDDD itself is downloaded and statically linked into the main module during the installation. (Static linking simplifies things a lot as libDDD is compiled with tricky flags.)

Installation

Run pip install daddy as usual. It may take some time as libDDD is downloaded and upacked if not found in src subdirectory. Then, compilation itself takes quite some time.

Usage

daddy module exposes the content of its sub-module daddy.dddlib that exports three classes:

• domain is the starting point, allowing to define a set of variables over given domains, from a domain instance, one can derive the other objects
• ddd is a non-mutable set of valuations for the variables of a domain
• hom is an operation on a ddd that returns another ddd and is used as a function

Additionally, daddy.dddlib defined class edge that is used to iterate over the structure of a ddd. Documentation is currently within the docstrings, to start with, look at domain.__init__ and domain.__call__.

Licence (MIT)

(C) 2024 Franck Pommereau franck.pommereau@univ-evry.fr

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.