Sayak Ray Chowdhury Aditya Gopalan 13790-13801 2019 NeurIPS https://proceedings.neurips.cc/paper/2019/hash/06a50e3f66db4a334202d3adfd31c589-Abstract.html http://papers.nips.cc/paper/9531-bayesian-optimization-under-heavy-tailed-payoffs conf/nips/2019 db/conf/nips/nips2019.html#ChowdhuryG19