Machine learning has revolutionized disciplines within materials science that have been able to generate sufficiently large datasets to utilize algorithms based on statistical inference, but for many important classes of materials the datasets remain small. After an introduction to various types of ML regression, Chapter 1 introduces a rapidly growing number of approaches to show how embedding domain knowledge of materials systems are reducing data requirements and allowing broader applications of machine learning. Furthermore, these hybrid approaches improve the interpretability of the predictions, allowing for greater physical insight into the factors that
determine material properties. A survey of the modern utilization of machine learning for cementitious systems is discussed.