4 papers
TxnSails: Achieving Serializable Transaction Scheduling with Self-Adaptive Isolation Level Selection
Qiyu Zhuang, Wei Lu, Shuang Liu +6
Achieving the serializable isolation level, regarded as the gold standard for transaction processing, is costly. Recent studies reveal that adjusting specific query patterns within…
GeoTP: Latency-aware Geo-Distributed Transaction Processing in Database Middlewares (Extended Version)
Qiyu Zhuang, Xinyue Shi, Shuang Liu +6
The widespread adoption of database middleware for supporting distributed transaction processing is prevalent in numerous applications, with heterogeneous data sources deployed acr…
Sparse Estimation for XL-MIMO with Unified LoS/NLoS Representation
Xu Shi, Xuehan Wang, Jingbo Tan +1
Extremely large-scale antenna array (ELAA) is promising as one of the key ingredients for the sixth generation (6G) of wireless communications. The electromagnetic propagation of s…
Near-Optimal Convex Simple Bilevel Optimization with a Bisection Method
Jiulin Wang, Xu Shi, Rujun Jiang
This paper studies a class of simple bilevel optimization problems where we minimize a composite convex function at the upper-level subject to a composite convex lower-level proble…