Research Interests:

High Performance Data Management Technology, in particular:

 

•         data query & information retrieval & knowledge discovery;

•         data quality services & data cleaning;

•         Spatial-Temporal data management.

 

Publications:

 

•         Siyu Liu, Qizhi Liu, Zhifeng Bao: DARS: Diversity and Distribution-aware Region Search. DASFAA(3) 2020:204-220

（Siyu Liu 刘斯宇 graduated in 2021 and entered Ubisoft 育碧）

 

•         Lun Li, Xiaohang Chen, Qizhi Liu, Zhifeng Bao: A Data-driven Approach for GPS Trajectory Data Cleaning. DASFAA(1) 2020:3-19

（Lun Li 李论 graduated in 2020 and entered TrendMicro 趋势科技）

（Xiaohang Chen 陈晓航 graduated in 2021 and entered NetEase 网易）

 

•         Huaqing Wu, Weizhuo He, Qizhi Liu, Yu Yang: Discovery of Chasing Patterns in Trajectory Data. DASFAA(Workshops) 2020:47-59

（Huaqing Wu 吴华清 graduated in 2022 and entered Alibaba Cloud 阿里云）

（Weizhuo He 何硙卓 graduated in 2019 and entered Huawei 华为）

 

•         Sheng Wang, Zhifeng Bao, J. Shane Culpepper, Zizhe Xie, Qizhi Liu, Xiaolin Qin: Torch: A Search Engine for Trajectory Data. SIGIR 2018: 535-544

 

•         Zizhe Xie, Qizhi Liu, Zhifeng Bao: Sifting Truths from Multiple Low-Quality Data Sources. APWeb/WAIM(1) 2017: 74-81

 

•         Yipeng Zhang, Ping Zhang, Zhifeng Bao, Zizhe Xie, Qizhi Liu, Bang Zhang: Finding Influential Nodes by a Fast Marginal Ranking Method. ADC 2018: 249-261

（Zizhe Xie 谢子哲 graduated in 2018 and entered Baidu 百度）

 

•         Zhiwei Zhang, Lingling Zhang, Hao Zhang, Weizhuo He, Zequn Sun, Gong Cheng, Qizhi Liu, Xinyu Dai, Yuzhong Qu: Towards Answering Geography Questions in Gaokao: A Hybrid Approach. CCKS 2018: 1-13

 

•         Xinhui Hu, Qizhi Liu, Lun Li, Peizhang Liu: A High Precision Recommendation Algorithm Based on Combination Features. DASFAA(Workshops) 2018: 74-86

（Xinhui Hu 胡信晖 graduated in 2017 and entered ZTE 中兴）

 

•         Chaowei ZHONG, Qizhi LIU, Wei HU: A Rule Based Approach to Duplicate Detection. Journal of Computer Research and Development, 2014(51 Suppl.): 317-324

（Chaowei ZHONG 钟超玮 graduated in 2015 and entered Alibaba 阿里巴巴）

 

•         Chengkai TAO, Qizhi LIU, Yan ZHANG: EasyControl: Improve Database Throughput under Overloading. WAIM 2013: 167-172

（Chengkai TAO 陶承恺 graduated in 2013 and entered TrendMicro 趋势科技）

 

•            樊海宽, 刘奇志. 基于余弦函数局部特征的时间衰变模式. 计算机应用, 32(2): 313-316. 2012

（樊海宽 graduated in 2010 and entered NUDT 国防科大）

 

•            秦林新, 刘奇志. 一种乱序数据流上的偏倚抽样算法. 计算机研究与发展, 48(10 suppl.): 298-303. 2011

（秦林新 graduated in 2012 and entered Alibaba 阿里巴巴）

 

•            赵飞, 刘奇志, 张剡, 柏文阳. 一种大域数据流中缺失值的填充方法. 南京大学学报(自然科学), 47(1): 32-39. 2011

（赵飞 graduated in 2011 and entered ZTE 中兴）

 

•            檀宝权, 刘奇志, 王云汉. 基于BD结构的历史数据流存储与查询. 计算机应用与软件, 28(2): 76-79. 2011

（檀宝权 graduated in 2010 and entered Huawei 华为）

 

•            后小亮, 刘奇志, 高先锋, 檀宝权. 大量多态数据流的综合压缩算法. 计算机研究与发展, 45(10 suppl.): 336-341. 2008

（后小亮 graduated in 2009 and entered JS TELECOM 江苏电信）

 

•            高先锋, 刘奇志, 后小亮, 檀宝权. 一种新的数据流页面存储模型. 计算机研究与发展, 45(10 suppl.): 342-347. 2008

 

•           Qizhi LIU, Xianfeng GAO, Xiaoliang HOU, Wenyang BAI: Clock Model for Soft Real-Time Data. Journal of Computational Information Systems, 4(4): 1441-1445. 2008

（高先锋 graduated in 2009 and entered 深圳市社会发展研究中心）

 

已获授权专利:

（201810578708.3）

（201610453143.7）

（杨坤奎 graduated in 2018 and started his own tech company）

（200510040099.9）

（200410014624.5）