Similarit\'e en intension vs en extension : \`a la crois\'ee de l'informatique et du th\'e\^atre

Traditional staging is based on a formal approach of similarity leaning on dramaturgical ontologies and instanciation variations. Inspired by interactive data mining, that suggests different approaches, we give an overview of computer science and theater researches using computers as partners of the actor to escape the a priori specification of roles.