Robert Christensen
Research Scientist IV
Team: Transactional insights
Research areas: Scalable computation, distributed systems, resource management
Robert Christensen attended the University of Utah doing database systems research under Feifei Li. Research focused on data structures and algorithms that supported sampled results. Within Visa, Robert was a significant contributor to the internal Visa Machine Learning Platform, developing system optimization which have allowed for significantly more complicated batch workloads to run without negatively impacting interactive workloads. Within Visa Research, Robert works on scalable computation and distributed systems.
Publications
- Min Du, Robert Christensen, Wei Zhang, Fiefei Li; “Pcard: Personalized restaurants recommendation from card payment transaction records”. The World Wide Web Conference. 2019
- Zhuoyue Zhao, Robert Christensen, Fiefei Li, Xiao Hu, Ke Yi; “Random sampling over joins revisited”; International Conference on Management of Data, 2018
- Lu Wang, Robert Christensen Fiefei Li, Ke Yi; “Spatial online sampling and aggregation”; VLDB 2015
- Robert Christensen, Lu Wang, Fiefei Li, Ke Yi, Jun Tang, Natalee Villa; “STORM: Spatio-temporal online reasoning and management of large spatio-temporal data”, ACM SIGMOD, 2015
- Wangchao Le, Feifei Li, Yifei Tao, Robert Christensen; “Optimal splitters for temporal and multi-version databases”, ACM SIGMOD, 2013
Patent
Hao Yang, Liang Gou, Liang Wang, Robert Christensen, Wei Zhang, “System, Method, and Computer Program Product for Incorporating Knowledge from More Complex Models in Simpler Models”