License
QEM is distributed under the GNU General Public License v3.0.
GNU General Public License v3.0
Copyright (c) 2025 Zezhong Zhang
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
What This Means
You are free to: - Use QEM for any purpose - Study how QEM works - Share QEM with others - Make changes to QEM
Under these conditions: - Any derivative work must also be GPL v3 - You must provide source code for any distributed modifications - You must include the GPL v3 license text - You must indicate what changes you made
Commercial Use GPL v3 allows commercial use, but any modifications must also be open source.
Third-Party Dependencies
QEM uses several third-party libraries with their own licenses:
NumPy, SciPy, Matplotlib: BSD licenses
Keras: Apache 2.0 license
scikit-image, scikit-learn: BSD licenses
HyperSpy: GPL v3 license
ASE: LGPL v2.1 license
All dependencies are compatible with GPL v3.
Questions
For licensing questions, contact: zhangzz@aisi.ac.cn