is the liberation of the signified from
a rigid connection with
the signifier. An important role is played
production and business, social life and education, science and culture. Information has become
a global
He, X.,
Wang, Z.,
Li, Y.,
Khazhina, S.,
Du, W.,
Wang, J.,
Wang, W. (2022) discrete teaching and
learning based optimization algorithm is applied to solve this NP-hard problem, and
a