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The WHY-Engine backend including the REST API

The WHY-Engine is a prototype to explain Prevention’s predictions being developed in COALA EU Project.
COALA is developing a solution for cognitive assistance that consists of a composition of trustworthy AI components with a voice-enabled digital intelligent assistant as an interface. The solution will support workers that need to use analytics tools and new workers that perform on-the-job training, and the "WHY Engine" is a key component of the solution.
The architecture of the COALA solution for the Digital Intelligent Assistant (DIA) is structured into four layers: 1) manufacturing resources, 2) data management and integration, 3) AI-based reasoning and planning, and 4) the DIA dialog management.
The AI-based reasoning and planning layer provides the solution with artificial intelligence. In COALA, we focus on components for prescriptive quality analytics, an expert system for on-the-job training of machine operators and production line managers, a component that answers the users why questions about the AI’s decisions and the provided information (e.g. regarding the information quality) –we call this component “WHY engine”.