Proceedings of the International scientific and practical conference ― Cambridge Science and Education Conference‖ (February 23-25, 2026) / Publisher website: www.naukainfo.com. – Cambridge, United Kingdom, 2026. - 289 p.

108 INFORMATION TECHNOLOGIES AND SYSTEMS UDC 004.415.53 Morozov Oleksandr PhD student Vinnytsia National Technical University Vinnytsia, Ukraine Yarovyi Andrii Doctor of Science, Professor Vinnytsia National Technical University Vinnytsia, Ukraine METHODS OF EVALUATING SELECTOR LENGTH FOR AUTOMATED TESTING Abstract. An analysis of methods for determining selector length has been carried out. The relevance of a formalised approach to determining selector length as one of the criteria for its stability, readability and test execution efficiency has been substantiated. The optimal method for calculating selector length has been determined. Weighting coefficients for selector components are given. The proposed metric can be used as an optimisation criterion in the automatic generation of selectors, in particular in intelligent automated testing support systems. Keywords: software, information technology, intelligent systems, automated testing, selectors, selectors length. Introduction. Automated testing is an important process in software development. The growing complexity of modern web interfaces necessitates a