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Background: Donkeys in Kenya. Tricky to find the weight of a donkey in the “field” – no pun intended! So using three measurements, estimate the weight. Other covariates include age. Standard practice is to fit: log(weight) = a + b log(heartgirth) + c*log(Height) for adult donkeys, and other slightly different models for young/old and...
An hour to go! Click on the picture to download the slide. Filed under: Conference, R, Structural Equation Model
Example: Car seat occupation: Algorithm must decide whether airbag opens: Must open for adult but not for small child or if the seat if empty a few others I missed. Key questions are: What type of design: 32 run regular fractional factorial Response measurement – depends on dummy position, so repeat for 3 different...
Wilem Ligtenberg – GPU computing and R Why GPU computing – theoretical GFLOPs for a GPU is three times greater than a CPU. Use GPUs for same instruction multiple data problems (SIMD). Initially GPUs were developed for texture problems. For example, a wall smashed into lots of pieces. Each core handled a single piece....
These are my rough notes on the Kaleidoscope Ic session. David Smith – The R Ecosystem (useR! 2011) David Smith works for Revolution Analytics. Quick overview of the R project – useR, r-journal, and r-forge. Social media starting to play a part in R – Google+, twitter, stackoverflow, and the traditional R mailing list....
A sneak peek of the result of a Structural Equation Model using sem package in R, which I will present in the R User Conference in Warwick next week, is reveal first here. Filed under: Conference, R
While my time at the 2011 Joint Statistical Meetings was short--I unfortunately missed some presentations I would have like to have attended--it was a great experience. The collection of academics and professionals is very different from the other con...
Here are the 14 slides I used during my talk at the Joint Statistical Meetings 2011: shotwell-jsm-2011.pdf. I'm trying hard to minimize the text in my presentation slides. But, this usually requires that I practice more. Hence, you will know which talks I have practiced thoroughly by the amount of text in the slides...
Monday 15th August Monday timetable. Opening Mixer, sponsored by CRiSM, 19:30 – 21:00 All conference attendees are welcome to join us for drinks at The Bar on the first floor of the Rootes Building. Beer, wine, non-alcoholic drinks and light sn...
Next month I will have a chance to present how I use R to conduct a structural equation model in my thesis to the expeRts. And now the tentative timetable was just released. Similar to EurOMA, I will be the … Continue reading →
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).