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Almost Free: Self-concordance in Natural Exponential Families and an Application to Bandits

Neural Information Processing Systems

We study how tail properties of the base distribution of a NEF impose limits on the NEF: if the base distribution is subexponential (subgaussian), we show that the NEF is self-concordant with a stretch factor that grows inverse quadratically (respectively, linearly) 2.






HQA-Attack: Toward High Quality Black-Box Hard-Label Adversarial Attack on Text

Neural Information Processing Systems

To alleviate the above issues, we propose a simple yet effective framework for producing H igh Q uality black-box hard-label A dversarial Attack, named HQA-Attack . The overview of HQA-Attack is shown in Figure 1. By "high quality", it means that the HQA-Attack method can generate