一句话：提出 Deltachain，将模型增量表示与加密访问控制结合，在不可信平台上安全共享模型并保护知识产权。
在复杂系统开发中，企业需要通过协作汇聚各自的知识产权，但又必须防止竞争者获取这些知识。虽然交换接口等重叠部分对系统集成必不可少，但传统共享方式可能暴露过多信息。论文提出 Deltachain 方法，将模型表示为增量（delta），即对模型所做的修改，并支持持续共享而非基于版本的共享，以提高协作效率。该方法进一步把基于 delta 的模型表示与基于加密的访问控制结合起来，使得企业能够利用不可信的基础设施来共享模型，同时保护各自的知识产权。摘要未给出具体实验评估，工作重点在于方法设计与可行性论证。
Industry is built atop the principle of intellectual property, i.e., knowledge about a system, a process, or something else that can be sold to a customer. Therefore, it is of utmost importance to protect this intellectual property from competitors. For the development of complex systems, companies need to collaborate, each contributing their share of intellectual property needed to develop the system. The exchange of overlapping parts, e.g., interfaces, is needed for the integration and ultimately building the system. Sharing the interface in an incremental way, i.e., by representing it as deltas, i.e., changes made to a model, improves collaboration efficiency. Continuous sharing instead of a version-based sharing can further increase the efficiency. We propose the Deltachain approach, which combines the delta-based representation of models with encryption-based access control, allowing us to use untrusted infrastructure for sharing models.