Publications by Gavin L. Simpson
Simultaneous intervals for smooths revisited
Eighteen months ago I wrote a post in which I described the use of simulation from the posterior distribution of a fitted GAM to derive simultaneous confidence intervals for the derivatives of a penalised spline. It was a nice post that attracted some interest. It was also wrong. I have no idea what I was thinking when I thought the intervals des...
13219 sym R (3338 sym/22 pcs) 8 img
Simultaneous intervals for smooths revisited
Eighteen months ago I wrote a post in which I described the use of simulation from the posterior distribution of a fitted GAM to derive simultaneous confidence intervals for the derivatives of a penalised spline. It was a nice post that attracted some interest. It was also wrong. I have no idea what I was thinking when I thought the intervals des...
12250 sym R (3338 sym/22 pcs) 8 img
Pangaea and R and open palaeo data
For a while now, I’ve been wanting to experiment with rOpenSci’s pangaear package (Chamberlain et al., 2016), which allows you to search, and download data from, the Pangaea, a major data repository for the earth and environmental sciences. Earlier in the year, as a member of the editorial board of Scientific Data, Springer Nature’s open da...
11393 sym R (5845 sym/19 pcs) 6 img
Pangaea and R and open palaeo data
For a while now, I’ve been wanting to experiment with rOpenSci’s pangaear package (Chamberlain et al. 2016), which allows you to search, and download data from, the Pangaea, a major data repository for the earth and environmental sciences. Earlier in the year, as a member of the editorial board of Scientific Data, Springer Nature’s open dat...
11466 sym R (5845 sym/19 pcs) 6 img
Modelling extremes using generalized additive models
Quite some years ago, whilst working on the EU Sixth Framework project Euro-limpacs, I organized a workshop on statistical methods for analyzing time series data. One of the sessions was on the analysis of extremes, ably given by Paul Northrop (UCL Department of Statistical Science). That intro certainly whet my appetite but I never quite found t...
16059 sym R (4599 sym/17 pcs) 8 img
Modelling extremes using generalized additive models
Quite some years ago, whilst working on the EU Sixth Framework project Euro-limpacs, I organized a workshop on statistical methods for analyzing time series data. One of the sessions was on the analysis of extremes, ably given by Paul Northrop (UCL Department of Statistical Science). That intro certainly whet my appetite but I never quite found t...
16087 sym R (4599 sym/17 pcs) 8 img
Simultaneous intervals for derivatives of smooths revisited
Eighteen months ago I screwed up! I’d written a post in which I described the use of simulation from the posterior distribution of a fitted GAM to derive simultaneous confidence intervals for the derivatives of a penalized spline. It was a nice post that attracted some interest. It was also wrong. In December I corrected the first part of that ...
11933 sym R (2491 sym/20 pcs) 6 img
Simultaneous intervals for derivatives of smooths revisited
Eighteen months ago I screwed up! I’d written a post in which I described the use of simulation from the posterior distribution of a fitted GAM to derive simultaneous confidence intervals for the derivatives of a penalized spline. It was a nice post that attracted some interest. It was also wrong. In December I corrected the first part of that ...
11929 sym R (2491 sym/20 pcs) 6 img
Prediction intervals for GLMs part I
One of my more popular answers on StackOverflow concerns the issue of prediction intervals for a generalized linear model (GLM). My answer really only addresses how to compute confidence intervals for parameters but in the comments I discuss the more substantive points raised by the OP in their question. Lately there’s been a bit of back and fo...
8432 sym R (2996 sym/19 pcs) 4 img 1 tbl
Prediction intervals for GLMs part I
One of my more popular answers on StackOverflow concerns the issue of prediction intervals for a generalized linear model (GLM). My answer really only addresses how to compute confidence intervals for parameters but in the comments I discuss the more substantive points raised by the OP in their question. Lately there’s been a bit of back and fo...
8447 sym R (2996 sym/19 pcs) 4 img 1 tbl