Design of Experiments and Machine Learning
Which method uses the fewest experiments?
AI can be used to predict the properties of materials and therefore suggest which material candidates should be synthesized and tested. The traditional approach uses a combination of scientific intuition and design of experiments (DOE) methods to choose which candidates to test. In both cases, resource-intensive experiments are needed to validate results.
Citrine has seen a 50%-70% reduction in the number of experiments needed to reach target performance.
What Is Sequential Learning?
Sequential Learning (SL) is an iterative, AI-guided R&D methodology where each experiment<>modeling loop improves the AI model that is used to help select the next batch of experiments to perform.
The AI model identifies promising candidates to synthesize and test in each round. Including uncertainty in each prediction is critical to get the most value out of this approach.
Uncertainty is calculated for each prediction to help scientists understand:
- the likelihood of achieving target properties
- the number of candidates that could achieve particular properties
- which areas of the output space the AI model is still uncertain about
This additional information is used to suggest the next batch of experiments. It is these new insights that reduce the number of experiments needed to reach performance targets.