Discovering trend reversals between two data cubes provides users with a novel and
interesting knowledge when the real world context fluctuates: What is new? Which trends
appear or emerge? Which tendencies are immersing or disappear? With the concept of
Emerging Cube, we capture such trend reversals by enforcing an emergence constraint. We
resume the classical borders for the Emerging Cube and introduce a new one which
optimizes both storage space and computation time, provides a simple characterization of …