Patent ID: 8903748

Claim:
A system comprising: at least one processor; a system memory operatively coupled to the at least one processor; and at least one optimization module communicatively coupled to the system memory, wherein the at least one optimization module is adapted to: decompose a primary loss function into stratum loss functions, each of the stratum loss functions having a non-zero weight applied thereto; decrease a stratum loss to a predefined stratum loss threshold for each of the stratum loss functions by processing each of the stratum loss functions individually using gradient descent, the non-zero weights remaining as non-zero weights throughout said decreasing; and decrease a primary loss to a predefined primary loss threshold of the primary loss function by processing each of the stratum loss functions according to a stratum sequence, the sequence being chosen to establish convergence to at least one of: stationary points of the primary loss function, and chain-recurrent points of the primary loss function.