Word-level dX-privacy using multidimensional Laplace noise plus nearest neighbor search almost never emits semantically similar words; the paper derives why and patches the mechanism with a rank-based post-processing step.
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$d_X$-Privacy for Text and the Curse of Dimensionality
Word-level dX-privacy using multidimensional Laplace noise plus nearest neighbor search almost never emits semantically similar words; the paper derives why and patches the mechanism with a rank-based post-processing step.