Publications (13)
Utilizing Players' Playtime Records for Churn Prediction: Mining Playtime Regularity
Wanshan Yang, Ting Huang, Junlin Zeng +4
In the free online game industry, churn prediction is an important research topic. Reducing the churn rate of a game significantly helps with the success of the game. Churn predict…
MIMO B-MAC Interference Network Optimization under Rate Constraints by Polite Water-filling and Duality
An Liu, Youjian, Liu +2
We take two new approaches to design efficient algorithms for transmitter optimization under rate constraints, to guarantee the Quality of Service in general MIMO interference netw…
Dual Link Algorithm for the Weighted Sum Rate Maximization in MIMO Interference Channels
Xing Li, Seungil You, Lijun Chen +3
MIMO interference network optimization is important for increasingly crowded wireless communication networks. We provide a new algorithm, named Dual Link algorithm, for the classic…
How Many Users should be Turned On in a Multi-Antenna Broadcast Channel?
Wei Dai, Youjian, Liu +1
This paper considers broadcast channels with L antennas at the base station and m single-antenna users, where each user has perfect channel knowledge and the base station obtains c…
A Smoothed Analysis of Online Lasso for the Sparse Linear Contextual Bandit Problem
Zhiyuan Liu, Huazheng Wang, Bo Waggoner +3
We investigate the sparse linear contextual bandit problem where the parameter is sparse. To relieve the sampling inefficiency, we utilize the "perturbed adversary" where the…
Maximum A Posteriori Probability (MAP) Joint Fine Frequency Offset and Channel Estimation for MIMO Systems with Channels of Arbitrary Correlation
Mingda Zhou, Zhe Feng, Xinming Huang +2
Channel and frequency offset estimation is a classic topic with a large body of prior work using mainly maximum likelihood (ML) approach together with Cramér-Rao Lower bounds (CRL…