Department of Statistics, University of California, Davis, Davis, CA, 95616, USA. jingjingye@gmail.com|Department of Statistics, University of California, Davis, Davis, CA, 95616, USA. jingjingye@gmail.com|Department of Statistics, University of California, Davis, Davis, CA, 95616, USA. jingjingye@gmail.com|Department of Statistics, University of California, Davis, Davis, CA, 95616, USA. jingjingye@gmail.com|Department of Statistics, University of California, Davis, Davis, CA, 95616, USA. jingjingye@gmail.com