Granville Matheson
@granvillejmath.bsky.social
Enthusiast, dad, researcher. Working at Karolinska Institutet with PET quantification and analysis. Interested in (Bayesian) stats, molecular imaging, pharmacokinetics, #rstats, brains and brain imaging. Scottish South African in Sweden.
Really excited to announce our latest preprint. We introduce a new approach for joint Bayesian quantification and analysis of PET data using reference tissue models. It improves quantification, inferential efficiency (power) and also allows efficient harmonisation across PET systems or centres.
A Reference Tissue Implementation of Simultaneous Multifactor Bayesian Analysis (SiMBA) of PET Time Activity Curve Data
PET analysis is conventionally performed as a two-stage process of quantification followed by analysis. We recently introduced SiMBA (Simultaneous Multifactor Bayesian Analysis), a hierarchical model ...
www.biorxiv.org
December 9, 2024 at 10:52 AM
Really excited to announce our latest preprint. We introduce a new approach for joint Bayesian quantification and analysis of PET data using reference tissue models. It improves quantification, inferential efficiency (power) and also allows efficient harmonisation across PET systems or centres.
Ah, the to-do list pile got a bit too high and I've dropped off the #adventofcode train... Will see if I have time to join later in the month, but Godspeed to the rest of you hanging on, especially team #rstats !
December 9, 2024 at 9:58 AM
Ah, the to-do list pile got a bit too high and I've dropped off the #adventofcode train... Will see if I have time to join later in the month, but Godspeed to the rest of you hanging on, especially team #rstats !
Day 5 of #AdventOfCode with #rstats : "Print Queue" (adventofcode.com/2024/day/5). Not pretty, not elegant and not particularly quick -- but it works! This one was quite fun: I can't remember the last time I used a while loop!
December 5, 2024 at 8:09 AM
Day 5 of #AdventOfCode with #rstats : "Print Queue" (adventofcode.com/2024/day/5). Not pretty, not elegant and not particularly quick -- but it works! This one was quite fun: I can't remember the last time I used a while loop!
Day 4 of #AdventOfCode - "Ceres Search" with #rstats. I found this one pretty tricky! Had to dig into the old base R toolbox. Really interested to see how this could be done in a more #tidyverse way.
December 4, 2024 at 8:47 AM
Day 4 of #AdventOfCode - "Ceres Search" with #rstats. I found this one pretty tricky! Had to dig into the old base R toolbox. Really interested to see how this could be done in a more #tidyverse way.
As a regular MCMC user, this hits close to home. Painful memories of calculating our simulation run-times for the cluster in core-years!
Shoutout to this figure caption in the SDSS extended abstract template... 😂
@amstatnews.bsky.social which of you did this???
@amstatnews.bsky.social which of you did this???
December 3, 2024 at 10:08 PM
As a regular MCMC user, this hits close to home. Painful memories of calculating our simulation run-times for the cluster in core-years!
Day 3 of Advent of Code 2024: "Mull It Over" with #rstats . As bad of a reputation as it gets, I do love me some regex!!
#AdventOfCode
gist.github.com/mathesong/35...
#AdventOfCode
gist.github.com/mathesong/35...
December 3, 2024 at 6:43 AM
Day 3 of Advent of Code 2024: "Mull It Over" with #rstats . As bad of a reputation as it gets, I do love me some regex!!
#AdventOfCode
gist.github.com/mathesong/35...
#AdventOfCode
gist.github.com/mathesong/35...
My #rstats solution to "Red-Nosed Reports" - Day 2 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/2
gist.github.com/mathesong/78...
gist.github.com/mathesong/78...
Day 2 - Advent of Code 2024
adventofcode.com
December 2, 2024 at 10:36 AM
My #rstats solution to "Red-Nosed Reports" - Day 2 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/2
gist.github.com/mathesong/78...
gist.github.com/mathesong/78...
In the spirit of making a new home here, and re-kindling the fun and community of Twitter of yesteryear, I'll join in for #AdventOfCode this year (adventofcode.com/2024/day/1) (at least as many as I can find time for).
Here's my #rstats solution for Day 1: gist.github.com/mathesong/ec...
Here's my #rstats solution for Day 1: gist.github.com/mathesong/ec...
Day 1 - Advent of Code 2024
adventofcode.com
December 1, 2024 at 8:03 PM
In the spirit of making a new home here, and re-kindling the fun and community of Twitter of yesteryear, I'll join in for #AdventOfCode this year (adventofcode.com/2024/day/1) (at least as many as I can find time for).
Here's my #rstats solution for Day 1: gist.github.com/mathesong/ec...
Here's my #rstats solution for Day 1: gist.github.com/mathesong/ec...