Stan Weekly Roundup, 30 June 2017
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Here’s some things that have been going on with Stan since the last week’s roundup
- Stan® and the logo and were was granted U.S. Trademark Registrations No. 5,222,891 and U.S. Serial Number: 87,237,369. Hard to feel special when there were millions of products ahead of you. Trademarked names are case insensitive and they required a black-and-white image, shown here.
- Peter Ellis, a data analyst working for the New Zealand government, posted a nice case study, State-space modelling of the Australian 2007 federal election. His post is intended to “replicate Simon Jackman’s state space modelling [from his book and pscl package in R] with house effects of the 2007 Australian federal election.”
- Masaaki Horikoshi provides Stan programs on GitHub for the models in Jacques J.F. Commandeur and Siem Jan Koopman’s book Introduction to State Space Time Series Analysis.
- Sebastian Weber put out a first draft of the MPI specification for a map function for Stan. Mapping was introduced in Lisp with maplist(); Python uses map() and R uses sapply(). The map operation is also the first half of the parallel map-reduce pattern, which is how we’re implmenting it. The reduction involves fiddling the operands, result, and gradients into the shared autodiff graph.
- Sophia Rabe-Hesketh, Daniel Furr, and Seung Yeon Lee, of UC Berkeley, put together a page of
Resources for Stan in educational modeling; we only have another partial year left on our IES grant with Sophia.
The post Stan Weekly Roundup, 30 June 2017 appeared first on Statistical Modeling, Causal Inference, and Social Science.
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