Similarity / distance-based

TCP
Beating Random Test Case Prioritization Test prioritization in continuous integration environments Learning for test prioritization: An industrial case study A similarity-based approach for test case prioritization using historical failure data Test case prioritization techniques for model-based testing: a replicated study FAST Approaches to Scalable Similarity-Based Test Case Prioritization Application of Mahalanobis-Taguchi Method and 0-1 Programming Method to Cost-Effective Regression Testing Comparing and combining file-based selection and similarity-based prioritization towards regression test orchestration
TCS
TSR
Scalable Approaches for Test Suite Reduction
TSA