通过一致性提高差异私有直方图的准确性
Boosting the Accuracy of Differentially-Private Histograms Through Consistency
摘要:
我们表明,它是可以显着提高的准确性,同时满足差分隐私的直方图查询的一般类。我们的方法仔细选择了一组查询进行评估,然后利用一致性约束,应该保持在嘈杂的输出。在后处理阶段,我们计算最有可能产生噪声输出的一致输入。最终的输出是差分私有的和一致的,但除此之外,它通常更准确。我们表明,理论和实验,这些技术可以用来估计度序列的图非常精确,并计算直方图,可以支持任意范围的查询准确。
英文摘要:
We show that it is possible to significantly improve the accuracy of a general class of histogram queries while satisfying differential privacy. Our approach carefully chooses a set of queries to evaluate, and then exploits consistency constraints that should hold over the noisy output. In a post-processing phase, we compute the consistent input most likely to have produced the noisy output. The final output is differentially-private and consistent, but in addition, it is often much more accurate. We show, both theoretically and experimentally, that these techniques can be used for estimating the degree sequence of a graph very precisely, and for computing a histogram that can support arbitrary range queries accurately.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。