SoftSort: A Continuous Relaxation for the argsort Operator

29 Jun 2020Sebastian PrilloJulian Martin Eisenschlos

While sorting is an important procedure in computer science, the argsort operator - which takes as input a vector and returns its sorting permutation - has a discrete image and thus zero gradients almost everywhere. This prohibits end-to-end, gradient-based learning of models that rely on the argsort operator... (read more)

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