This edited collection commemorates and builds upon the work of prominent Greek scholar in econometrics, Professor Efthymios (Mike) Tsionas. Including previously published work by Professor Tsionas, as well as original research from scholars in his related fields, this book makes a significant contribution to applied econometrics. Within a single volume, readers will have the opportunity to explore the impactful contributions made by Mike Tsionas throughout his academic career. Chapters cover four key sections, including recent econometric method developments, Bayesian methods, stochastic frontier analysis and inefficiency, and macroeconomic applications. The book features contributions from globally recognized scholars in econometrics, with significant policy relevance. This will be a valuable resource for students and researchers of econometrics, specifically working on topics including Bayesian inference, productivity and inefficiency, macro-finance and banking.