scholarly journals Multiparty Reach and Frequency Histogram: Private, Secure, and Practical

2021 ◽  
Vol 2022 (1) ◽  
pp. 373-395
Author(s):  
Badih Ghazi ◽  
Ben Kreuter ◽  
Ravi Kumar ◽  
Pasin Manurangsi ◽  
Jiayu Peng ◽  
...  

Abstract Consider the setting where multiple parties each hold a multiset of users and the task is to estimate the reach (i.e., the number of distinct users appearing across all parties) and the frequency histogram (i.e., fraction of users appearing a given number of times across all parties). In this work we introduce a new sketch for this task, based on an exponentially distributed counting Bloom filter. We combine this sketch with a communication-efficient multi-party protocol to solve the task in the multi-worker setting. Our protocol exhibits both differential privacy and security guarantees in the honest-but-curious model and in the presence of large subsets of colluding workers; furthermore, its reach and frequency histogram estimates have a provably small error. Finally, we show the practicality of the protocol by evaluating it on internet-scale audiences.

2014 ◽  
Vol 22 (4) ◽  
pp. 1092-1105 ◽  
Author(s):  
Ori Rottenstreich ◽  
Yossi Kanizo ◽  
Isaac Keslassy

2016 ◽  
Vol 116 (4) ◽  
pp. 304-309 ◽  
Author(s):  
Salvatore Pontarelli ◽  
Pedro Reviriego ◽  
Juan Antonio Maestro

Author(s):  
Zhou Mingzhong ◽  
Gong Jian ◽  
Ding Wei ◽  
Cheng Guang

2019 ◽  
Vol 28 (12) ◽  
pp. 1950203
Author(s):  
Sajjad Rostami-Sani ◽  
Mojtaba Valinataj ◽  
Saeideh Alinezhad Chamazcoti

The cache system dissipates a significant amount of energy compared to the other memory components. This will be intensified if a cache is designed with a set-associative structure to improve the system performance because the parallel accesses to the entries of a set for tag comparisons lead to even more energy consumption. In this paper, a novel method is proposed as a combination of a counting Bloom filter and partial tags to mitigate the energy consumption of set-associative caches. This new hybrid method noticeably decreases the cache energy consumption especially in highly-associative instruction caches. In fact, it uses an enhanced counting Bloom filter to predict cache misses with a high accuracy as well as partial tags to decrease the overall cache size. This way, unnecessary tag comparisons can be prevented and therefore, the cache energy consumption is considerably reduced. Based on the simulation results, the proposed method provides the energy reduction from 22% to 31% for 4-way–32-way set-associative L1 caches bigger than 16[Formula: see text]kB running the MiBench programs. The improvements are attained with a negligible system performance degradation compared to the traditional cache system.


2010 ◽  
Vol 22 (5) ◽  
pp. 651-664 ◽  
Author(s):  
Deke Guo ◽  
Yunhao Liu ◽  
Xiangyang Li ◽  
Panlong Yang

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