|
Written by Tom SF Haines
|
|
Sunday, 26 June 2011 |
Just posting with two quick notes, about some arbitrary additions to my code repository, as accessible using the menu. Yup, I am somehow continuing to find the time to clean stuff up!
Firstly, I have added the code for the Gaussian Conjugate Prior cheat sheet that I previously published to this website, under the directory gcp. This code actually proved to be useful, and I am effectively uploading it in anticipation of uploading the code that uses it - this version of the code has been extended from the original upload.
Secondly, I have stuck a random forests implementation up, under the name stochastic woodlands and in the directory swood. Its nothing special, but it works, and I thought I might as well make it publicly available.
The analytics for my website has recently shown a massive jump in the number of people visiting my code repository - its nice to know that people are finding this stuff useful:-) I still have lots of code lying around that can be polished and uploaded - given that I have now covered classification and topic models pretty well I think I am going to next focus on density estimation - I have three separate libraries worth uploading for that, at least in the short term, and I am going to work through them from simplest to most complicated (In terms of technique - the most complicated technique actually has the simplest code!). The code for a couple of papers is also going to need uploading sooner rather than later.
|
|
Last Updated ( Sunday, 26 June 2011 )
|
|
Written by Tom SF Haines
|
|
Monday, 30 May 2011 |
Given that I have uploaded a Latent Dirichlet Allocation implementation to my code store that uses Gibbs sampling it seemed remiss to omit an implementation that used the mean field variational method (Note that this is not the same variational method used by the original LDA paper. Its not exactly the same graphical model either - in both cases I would consider these to be (minor) improvements.). I just fixed this - it can be obtained from the usual place, in the Google code repository linked from the menu, under the directory lda_var. I also moved the gibbs sampling version to the directory lda_gibbs
Also, two updates in one month - there must be something wrong with me!
|
|
Last Updated ( Monday, 30 May 2011 )
|
|
|
Written by Tom SF Haines
|
|
Sunday, 08 May 2011 |
Sometime last year I published a paper in which I indicated that the code would be available on my website. Being that the paper was in some minor workshop I might of delayed.. slightly. Well, better late than never, and I guess this is a good time to put the paper, and other related stuff, online as well.
The paper itself is Video Topic Modelling with Behavioural Segmentation by T. S. F. Haines and T. Xiang, and appears in the ACM Workshop on Multimodal Pervasive Video Analysis, 2010. You may download it as a pdf by clicking on the papers title.
The code itself can be found over at my Google code project, which is linked from the source code link on this website. You can also download the presentation I gave here, which includes various video files demonstrating it in action on the mile end data set. Additionally, there is a 2 minute long demonstration video I created, which can be obtained here.
|
|
Last Updated ( Sunday, 08 May 2011 )
|
|
|
Written by Tom SF Haines
|
|
Thursday, 31 March 2011 |
A little while ago, early 2010 if I recall correctly, I had cause to implement LDA, using the Gibbs sampling method. I have finally found the time to clean the code up and stick it in my code repository, so you can now find a LDA implementation available at http://code.google.com/p/haines/. Its nothing fancy, but well commented with a few test examples and works as well as any other implementation (Well, a variational approach would be better, computationally speaking, but LDA is simple enough that it is probably not worth the effort.).
|
|
Last Updated ( Thursday, 31 March 2011 )
|
|
|
Written by Tom SF Haines
|
|
Friday, 04 March 2011 |
Well, this website now looks less silly, bland, and maybe even half-way decent. All I've done is tweak the colours and change the background, but the effect is quite spectacular. I've been wanting to do this since the New Year, but see my last post for the reasons that didn't happen.
I am now intending to update with a greater frequency, not because I want to but because I have a backlog of stuff I want to put up here, and its not getting any shorter. Its mostly research stuff - code and papers.
And yes, in case anyone is wondering, the background is an upside down tree. Its a crop of a photo I took a few hundred meters from my parents house, just before Christmas when it had snowed heavily - went out and photographed all sorts of things. But a tree is kinda appropriate, given that this website is mostly research, most of which involves graphical models. Ok, a tree isn't a graph, and its a little too real to be considered a model, but it looks sweet, so I don't care:-P
|
|
|
Written by Tom SF Haines
|
|
Friday, 04 March 2011 |
My one (If I am being optimistic.) reader may have noticed I have been away. Though, in all probability this fictional being did not, given that I update this website so infrequently that no updates for two months is not just normal - it is to be expected. But the crux of it is that since just before Christmas my house in London lost internet, due to some cable being broken. Virgin media then lied to us, constantly for about two months, by which time we had given up and changed provider. I've detailed in the extended version of this story the scale of this screw up, but now I am back I will start updating my website again. At my usual ponderous pace:-)
|
|
Last Updated ( Friday, 04 March 2011 )
|
|
Read more...
|
|
|
<< Start < Prev 1 2 3 4 5 6 Next > End >>
|
| Results 7 - 12 of 34 |
