This is the bimonthly 'What are you working On?' thread. Previous threads are here. So here's the question:
What are you working on?
Here are some guidelines:
- Focus on projects that you have recently made progress on, not projects that you're thinking about doing but haven't started.
- Why this project and not others? Mention reasons why you're doing the project and/or why others should contribute to your project (if applicable).
- Talk about your goals for the project.
- Any kind of project is fair game: personal improvement, research project, art project, whatever.
- Link to your work if it's linkable.
I'm an undergrad astronomy researcher. About a month ago my advisor asked me if I'd ever heard of a strange thing called "Bayesian statistics." I had, thanks to lesswrong :D.
Recently there's been a movement in astronomy research towards Bayes. Astronomy is one of the most statistical of the physicses, so it's about time this happened. The recent rush has been almost entirely caused by the rise of MCMC algorithms and increasing computing power.
Anyway, my project has been to redo a bunch of statistics from an old paper of his with new data and the new statistics. At first I didn't think it would be any fun, but I've made huge progress and MCMC is really cool. I'm lucky that my advisor is good and gave me a "big picture." Turns out with decent statistics we'll be able to constrain cosmological parameters like the ratio of dark matter to luminous matter and such. Over the last few weeks I've figured everything important out. I've done all my fits, made a whole lotta graphs, and I'm writing a paper. Yeah!
On the side I'm teaching myself general relativity and figuring out how to better teach special relativity.
Nice. How are you implementing MCMC? Are you using one of the Gibbs samplers like BUGS or JAGS?
I'm also an astronomy undergrad, working with infrared spectra. I don't currently need MCMC, but it's interesting and I might play around with JAGS in the future.