There is no doubt on the importance of randomisation in agricultural experiments by agronomists and biometricians. Even when agronomists extend the experimentation from small trials to large on-farm trials, randomised designs predominate over systematic designs at most times.

This is the joint presentation by me and Suman at SAGI Symposium 2020.

Recently, I encountered a problem with using PSIS and Pareto k for model diagnostics and selection. Some models have good posterior predictive checking performance but a few terrible Pareto k values. And sometimes, a model with more high k values might be misspecified.

This is the presentation that I gave on 5th December at IBS 2019 Adelaide.

事情已经过去快2年了，今天闲来无事，回想了一下过去几年发生在自己身上的事，觉得这件事可以分享出来，给在国外留学和生活的朋友们一点建议和意见。同时也鼓励大家，在外求学生活不易，遇事不要慌，也不必忍气吞声，必要时学会用法律武器维护自己的权益。