5 papers
Computational Complexity Characterization of Protecting Elections from Bribery
Lin Chen, Ahmed Sunny, Lei Xu +5
The bribery problem in election has received considerable attention in the literature, upon which various algorithmic and complexity results have been obtained. It is thus natural…
Hybrid Cryptocurrency Pump and Dump Detection
Hadi Mansourifar, Lin Chen, Weidong Shi
Increasingly growing Cryptocurrency markets have become a hive for scammers to run pump and dump schemes which is considered as an anomalous activity in exchange markets. Anomaly d…
Private and Atomic Exchange of Assets over Zero Knowledge Based Payment Ledger
Zhimin Gao, Lei Xu, Keshav Kasichainula +3
Bitcoin brings a new type of digital currency that does not rely on a central system to maintain transactions. By benefiting from the concept of decentralized ledger, users who do…
Efficient Public Blockchain Client for Lightweight Users
Lei Xu, Lin Chen, Zhimin Gao +2
Public blockchains provide a decentralized method for storing transaction data and have many applications in different sectors. In order for users to track transactions, a simple m…
Election with Bribed Voter Uncertainty: Hardness and Approximation Algorithm
Lin Chen, Lei Xu, Shouhuai Xu +2
Bribery in election (or computational social choice in general) is an important problem that has received a considerable amount of attention. In the classic bribery problem, the br…