Secure and Efficient Trajectory-Based Contact Tracing using Trusted Hardware. - Fumiyuki Kato; Yang Cao 011; Masatoshi Yoshikawa (IEEE BigData, 2020)

Blockchain-Empowered Contact Tracing for COVID-19 Using Crypto-Spatiotemporal Information. - Zheng Wen 001; Keping Yu; Xin Qi 002; Toshio Sato; Yutaka Katsuyama; Takuro Sato; Wataru Kameyama; Fumiyuki Kato; Yang Cao 011; Masatoshi Yoshikawa; Min Luo; Jun Hashimoto (HealthCom, 2020)

Preventing Manipulation Attack in Local Differential Privacy Using Verifiable Randomization Mechanism. - Fumiyuki Kato; Yang Cao 011; Masatoshi Yoshikawa (DBSec, 2021)

Asymmetric Differential Privacy. - Shun Takagi; Fumiyuki Kato; Yang Cao 011; Masatoshi Yoshikawa (IEEE Big Data, 2022)

An Accurate, Flexible and Private Trajectory-Based Contact Tracing System on Untrusted Servers. - Ruixuan Cao; Fumiyuki Kato; Yang Cao 011; Masatoshi Yoshikawa (iiWAS, 2022)

Network Shuffling: Privacy Amplification via Random Walks. - Seng Pei Liew; Tsubasa Takahashi 001; Shun Takagi; Fumiyuki Kato; Yang Cao 011; Masatoshi Yoshikawa (SIGMOD Conference, 2022)

OLIVE: Oblivious and Differentially Private Federated Learning on Trusted Execution Environment. - Fumiyuki Kato; Yang Cao 011; Masatoshi Yoshikawa (CoRR, 2022)

HDPView: Differentially Private Materialized View for Exploring High Dimensional Relational Data. - Fumiyuki Kato; Tsubasa Takahashi 001; Shun Takagi; Yang Cao 011; Seng Pei Liew; Masatoshi Yoshikawa (Proc. VLDB Endow., 2022)

PCT-TEE: Trajectory-based Private Contact Tracing System with Trusted Execution Environment. - Fumiyuki Kato; Yang Cao 011; Masatoshi Yoshikawa (ACM Trans. Spatial Algorithms Syst., 2022)

From Bounded to Unbounded: Privacy Amplification via Shuffling with Dummies. - Shun Takagi; Fumiyuki Kato; Yang Cao 011; Masatoshi Yoshikawa (CSF, 2023)

Olive: Oblivious Federated Learning on Trusted Execution Environment Against the Risk of Sparsification. - Fumiyuki Kato; Yang Cao 011; Masatoshi Yoshikawa (Proc. VLDB Endow., 2023)

Uldp-FL: Federated Learning with Across Silo User-Level Differential Privacy. - Fumiyuki Kato; Li Xiong 001; Shun Takagi; Yang Cao 011; Masatoshi Yoshikawa (Proc. VLDB Endow., 2024)

HRNet: Differentially Private Hierarchical and Multi-Resolution Network for Human Mobility Data Synthesization. - Shun Takagi; Li Xiong 001; Fumiyuki Kato; Yang Cao 011; Masatoshi Yoshikawa (Proc. VLDB Endow., 2024)