Systems and methods for evaluating a loss function or a gradient of a loss function via dual decomposition
A loss function and gradient technique, applied in the field of computer systems for evaluating loss functions and/or their gradients, capable of solving a large number of operations, requiring linear running time, etc.
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[0028] In general, the present disclosure relates to systems and methods for evaluating loss functions or gradients of loss functions. For problems with large output spaces, evaluating the loss function and its gradients can be computationally expensive, typically taking linear time in the size of the output space. Recently, methods to accelerate learning via efficient data structures for nearest neighbor search (NNS) or maximum inner product search (MIPS) have been developed. However, the performance of such data structures usually degrades in high dimensions. The present disclosure provides systems and methods for reducing an intractable high-dimensional search problem to several much easier to solve lower-dimensional search problems via a dual decomposition of a loss function. The present disclosure further provides a greedy message passing technique that guarantees the convergence of the original loss. In this manner, the disclosed systems and methods can substantially i...
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