Archive for the 'Statstics' Category
08-08-20
Tags:Computing Statstics I am using the "segmented" package by Vito M. R. Muggeo (2008, http://cran.r-project.org/doc/Rnews/Rnews_2008-1.pdf) to do some piecewise-linear regressions. Wanted to make a function but this won’t run. Looks like it’s — or I am — confusing objects in different scopes.
## need to load the package firstlibrary("segmented")
## define the segreg3 function################## This function […]
»»»
(Computing, Statstics) | 0
08-06-19
Tags:Computing Research Statstics Watch List mathStatica is perhaps the most comprehensive solution for mathematical statistics on Mathematica. At least that’s how they bill it. It does include additional distributions, improved distributional plots, and simplified ways to deal with moments, cumulants, etc.
Just look at this example … I am impressed.
Parameter-Mix Distributions
The notation:
[…]
»»»
(Computing, Research, Watch List, Statstics) | 2
08-06-19
Tags:Computing Research Statstics
Mathematica claims to have Multicore Support since 5.2. I am running 6.x on a Core 2 Dual notebook, but the Math Kernel only uses 50% CPU max. Mathematica says:
Multicore chips have more than one CPU core; multiple-processor computers have more than one CPU chip. Both are being introduced by […]
»»»
(Computing, Research, Statstics) | 2
08-06-13
Tags:Computing Research Statstics Watch List Algorithmics Group : Software : PyMix PyMix: The Python mixture package Finite mixture models of […]
The Python Mixture Package (PyMix) is a freely available Python library implementing algorithms and data structures for a wide variety of data mining applications with basic and extended mixture models.
Features
»»»
(Computing, Research, Watch List, Statstics) | 0
08-06-13
Tags:Computing Research Statstics Some ideas just never die. At some point you got to decide to do something about them. In this case, I will post it here and forget about it once and for all.
This one goes back some 15, 20 odd years, when I was still in Beijing. I was attracted to […]
»»»
(Computing, Research, Odds'n'Ends, Statstics) | 0
08-05-27
Tags:blog Computing distribution modeling power law Statstics 6 blogs linked to this one you are reading in the past 6 months, according to my Technorati profile. I am indifferent to, but not disinterested in, the number. I probably have more trackbacks than that, but I don’t expect it to be ranked […]
»»»
(Computing, Odds'n'Ends, Statstics) | 0
08-04-26
Tags:Paperville Research Statstics Teaching I knew F-test is generally robust against violations of normality. I also knew there are a lot of subtleties in this. But I never looked up the sources, until now. This is a good place to start: JSTOR: Journal of Educational Statistics, Vol. 17, No. 4, (1992 ), pp. 315-339
Summarizing […]
»»»
(Research, Teaching, Paperville, Statstics) | 0
08-03-31
Tags:Linguistics paraorthography statistics Mark Liberman offers additional readings for a freshman who has a big ambition My lecture notes on morphology from Linguistics 001.
Language Log: Ask Language Log: Comparing the vocabularies of different languages
If you’re interested in taking this further, here are a few inadequate suggestions:
The Natural Language Toolkit, and the associated book. You might start with Chapter 3, Words.
My lecture […]
»»»
(Odds'n'Ends, Linguistics, Statstics) | 0
08-03-21
Tags:Bayesian book Profiles psychology reasoning statistics
New from BBS:
Below is a link to the forthcoming précis of a book accepted for Multiple Book Review in Behavioral and Brain Sciences (BBS). Please note that it is the *BOOK*, not the precis, that is to be reviewed.
BOOK: Bayesian Rationality: […]
»»»
(Profiles, Psychology, Statstics) | 0
07-12-14
Tags:Computing exhibit mit Research statistics Watch List SIMILE | Timeplot Timeplot is a DHTML-based AJAXy widget for plotting time series and overlay time-based events over them (with the same data formats that Timeline supports).
Well, too back I can’t show it here because it’s actually not […]
»»»
(Computing, Research, Watch List, Statstics) | 0
07-11-08
Tags:eye movement statistics Honestly, I am getting tired of the spinning naked woman on my blog. So I figured I’d just keep posting, and eventually it would be pushed out of the front page. This is a clip […]
Here goes…
… my first visual illusion. Is that the bell-cueved Gaussian distribution or is it tilted?
»»»
(Odds'n'Ends, Statstics) | 0
07-11-04
Tags:distribution Research statistics 1.3.6.6. Gallery of Distributions
I don’t remember if I blogged about this before, but NIST put together a number of useful distributions together, along with PDF, CDF, Hazard functions, plus more. The Johnson, Kotz, and Balakrishnan (1994) is a definite reference, but most chapters do not include hazard functions.
»»»
(Research, Statstics) | 0
07-11-04
Tags:matlab modeling Paperville Research rt statistics
TRISHA VAN ZANDT - Ohio State University has a number of Matlab scripts to model response time distributions, including exgaussian and other distributions. Looks like it requires the Statistics Toolbox.
Related publications:
Van Zandt, T.(2000). How to fit a response time distribution. Psychonomic Bulletin and Review, […]
»»»
(Research, Paperville, Statstics) | 0
07-10-03
Tags:evolution Linguistics Paperville statistics Linguistics (and […]
Babel’s Dawn: Was the First Language Tonal? starts with 3 maps aimed to show how the distribution of tonal languages coincides with the distribution of 2 genetic structures (distributions of alles in a population, I think). It’s based on a recent PNAS paper by Dediu & Ladd.
»»»
(Paperville, Linguistics, Statstics) | 0
07-09-30
Tags:Computing google Linguistics statistics Don’t quite know how this could be useful, but it’s a cool idea that makes a lot of sense. Official Google Research Blog: OpenHTMM Released
Statistical methods of text analysis have become increasingly sophisticated over the years. A good example is automated topic analysis using latent models, two variants of […]
»»»
(Computing, Linguistics, Statstics) | 0
07-09-18
Tags:Education statistics Teaching Some interesting statistics. Nothing new, but still useful. How one interprets the data, though, is often up to the reporter. The original is (should be, not working as of now) at www.oecd.org/edu/eag2007 The annual Education at a Glance Report said that of all […]
FT.com / World - OECD criticises waste in education spending
»»»
(Teaching, Education, Statstics) | 0
07-09-12
Tags:Computing Paperville psychology statistics This is the rationale for using SEM to model fMRI data, because […]
Amos Storkey (University of Edinburgh) published a paper this year that elucidates the relation between SEM and Gaussian Dynamic Baysian Networks, or Kalman Filters. Concise, but this is the clearest explanation I have seen so far:
»»»
(Computing, Paperville, Psychology, Statstics) | 0
07-09-06
Tags:Linguistics Paperville psychology Research statistics The paper itself is short, […]
Bob McMurray will be visiting next Tuesday, and I look forward to meeting with him. Am reading his latest paper on Sciense: Defusing the Childhood Vocabulary Explosion — McMurray 317 (5838): 631 — Science. Bob also has a webpage dedicated to the paper.
»»»
(Research, Paperville, Psychology, Linguistics, Statstics) | 1
07-08-02
Tags:distribution Paperville Research statistics word frequency Many natural phenomena exhibit self-similarity, and statistically this often shows in the frequency distribution of events. Word frequency is a classic example. If you rank words from most frequent to the least, and plot its frequency distribution on a log-log scale, you will get a straight […]
»»»
(Research, Paperville, Statstics) | 0
07-08-02
Tags:health media Paperville reading statistics Teaching
Hardly a day goes by without some sensatinoal claims about what reading does for the mind, or brain. Some turn out to be true, but many skeptical. Here’s a recent news piece from HealthDay that circulated among national newspapers such as the Washington Post.
Lead […]
»»»
(Teaching, Odds'n'Ends, Paperville, Statstics) | 0