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- W4380028048 abstract "Discrete distribution estimation is a fundamental statistical tool, which is widely used to perform data analysis tasks in various applications involving sensitive personal information. Due to privacy concerns, individuals may not always provide their raw information, which leads to unpredictable biases in the final results of estimated distribution. Local Differential Privacy (LDP) is an advanced technique for privacy protection of discrete distribution estimation. Currently, typical LDP mechanisms provide same protection for all items in the domain, which imposes unnecessary perturbation on less sensitive items and thus degrades the utility of final results. Although, several recent works try to alleviate this problem, the utility can be further improved. In this paper, we propose a novel notion called Item-Oriented Personalized LDP (IPLDP), which independently perturbs different items with different privacy budgets to achieve personalized privacy protection. Furthermore, to satisfy IPLDP, we propose the Item-Oriented Personalized Randomized Response (IPRR) based on the observation that the sensitivity of data shows an inverse relationship with the population size of respective individuals. Theoretical analysis and experimental results demonstrate that our method can provide fine-grained privacy protection and improve data utility simultaneously." @default.
- W4380028048 created "2023-06-10" @default.
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- W4380028048 date "2023-06-08" @default.
- W4380028048 modified "2023-10-18" @default.
- W4380028048 title "Item-Oriented Personalized LDP for Discrete Distribution Estimation" @default.
- W4380028048 doi "https://doi.org/10.20944/preprints202306.0289.v2" @default.
- W4380028048 hasPublicationYear "2023" @default.
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