What Is A Hierarchical Models? Hierarchical models, also known as hierarchical statistical models, multilevel models or random-effects models, are tools for analysing data with a nested or grouped ...

A research team of Professor Yan Chen from the Tianjin University presents a reconfigurable hierarchical metamaterial, establishes a linear relationship between its stiffness and the number of active ...

Companies staffed by humans are divided into managers and employees, and it seems that AI organizations could be structured ...