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Yahoo! Design Pattern Library |
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5838 clicks since Feb 15, 2006
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We have bundled the Yahoo! design patterns with pointers to related code from the Yahoo! User Interface Code Library. We hope this is a useful resource and look forward to your feedback. |
Top > Design
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Java Distribution Functions |
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3543 clicks since Oct 19, 2003
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A translation of the R distribution functions from C to Java. The translation isn't entirely pretty (especially since some of the C code was originally translated from Fortran), but it seems to work. Classes implement the PDF, CDF, and (usually) quantile and random variate generation for the following distributions: beta, hypergeometric, normal, binomial, logistic, poisson,
cauchy, lognormal, signrank,
chisquare, negative_binomial, t,
exponential, noncentral_beta, tukey,
f, noncentral_chisquare, uniform,
gamma, noncentral_f, weibull,
geometric, noncentral_t, wilcox |
Top > Math > Statistics
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Ming - an SWF output library and PHP module |
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3078 clicks since Jun 18, 2003
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Ming is a c library for generating SWF ("Flash") format movies, plus a set of wrappers for using the library from c++ and popular scripting languages like PHP, Python, and Ruby. |
Top > PHP > Extensions
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Matran: A Matrix Wrapper for Fortran 95 |
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3037 clicks since Jun 18, 2003
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Matran (pronounced MAY-tran) is a Fortran 95 wrapper that implements matrix operations and computes matrix decompositions using Lapack and the Blas. Although Matran is not based on a formally defined matrix language, it provides the flavor and convenience of coding in matrix oriented systems like Matlab, Octave, etc. By using routines from Lapack and the Blas, Matran allows the user to obtain the computational benefits of these packages with minimal fuss and bother. |
Top > Math > Algebra
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Metamath Home Page |
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3005 clicks since Jun 28, 2003
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Contains images you can use in web pages when discussing math. Lots of neat stuff. |
Top > Math
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JMathLib: Java Mathematical Evaluation Library |
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2738 clicks since Jun 14, 2003
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A library of mathematical functions designed to be used in evaluating complex expressions and display the results graphically. It will be used either interactively through a terminal like window or to interpret script files.
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Top > Math
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A Brief Introduction to Graphical Models and Bayesian Networks |
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2527 clicks since Oct 19, 2003
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The tutorial begins with this quote:
<p>
"Graphical models are a marriage between probability theory and graph theory. They provide a natural tool for dealing with two problems that occur throughout applied mathematics and engineering -- uncertainty and complexity -- and in particular they are playing an increasingly important role in the design and analysis of machine learning algorithms. Fundamental to the idea of a graphical model is the notion of modularity -- a complex system is built by combining simpler parts. Probability theory provides the glue whereby the parts are combined, ensuring that the system as a whole is consistent, and providing ways to interface models to data. The graph theoretic side of graphical models provides both an intuitively appealing interface by which humans can model highly-interacting sets of variables as well as a data structure that lends itself naturally to the design of efficient general-purpose algorithms.
</p>
<p>
Many of the classical multivariate probabalistic systems studied in fields such as statistics, systems engineering, information theory, pattern recognition and statistical mechanics are special cases of the general graphical model formalism -- examples include mixture models, factor analysis, hidden Markov models, Kalman filters and Ising models. The graphical model framework provides a way to view all of these systems as instances of a common underlying formalism. This view has many advantages -- in particular, specialized techniques that have been developed in one field can be transferred between research communities and exploited more widely. Moreover, the graphical model formalism provides a natural framework for the design of new systems." --- Michael Jordan, 1998.
</p>
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Top > Math > Graph Theory
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AVG FREE Edition |
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2500 clicks since Nov 29, 2003
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The AVG Free Edition is fully featured anti-virus software with the following restrictions: Basic user Interface only, Disabled Advanced Scheduling of Tests, Disabled Creating of Your Own Tests
NO TECHNICAL SUPPORT. Other than that, it is a good free anti-virus program.
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Top > Security
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Creating and using a timing class |
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2435 clicks since Feb 8, 2004
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The purpose of this tutorial is to talk about two seperate concepts; profiling and object oriented programming (OOP). In this tutorial we'll create a simple class to allow you to create one or more timers. You can then use these timers to show you how long a script or function takes to run, which can help you determine what portions of your script are eating up the most processing time. This is sometimes referred to as profiling. You can also use timer objects to provide generic timer display in your scripts.
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Top > PHP
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Resize a Popup to Fit an Image's Size |
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2332 clicks since Feb 26, 2003
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If you're a Webmaster who has to deal with image galleries, then make a note of this clever script. It gives you a solution to a very common problem -- how to resize a popup window to fit the image sizes displayed in it. The script works in NS 4/5/6/7 and IE 4/5/6. |
Top > Javascript
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An Introduction to Computer Simulation Methods - The text will be published by Addison-Wesley in early January 2006. All chapters are in pdf format. We include the usual disclaimers about possible bugs in the associated programs. The programs are available from sourceforge. Your comments and suggestions for improvements would be appreciated. |
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Applied regression analyis - Checkout Professor Laverty\'s supplements if you want some good notes on applied regression analysis. |
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AUTIMP - AUTomatic IMPutation Methods - In official statistics, too much effort is spent on correcting minor flaws in data obtained from business surveys. For such data imputation of erroneous or missing fields should be as automated as possible. For censuses and large-scale person surveys, too, automatic imputation is vital, because the numbers of data are so large. Automatic imputation software can replace the routine part of clerical editing work in such a way that accurate statistical estimators are obtained. It also offers quality advantages: unlike humans, automatic systems perform in a fully controllable fashion, with reproducible results
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Bayesians Worldwide - Personal web pages of Bayesian statistics researchers. |
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British Medical Journal: Statistics Notes - A fine series of short articles on the use of statistics. |
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Classifier::Bayes.pm - Warning - not for everyone. This is the code for the Perl based Bayes classifier used in the \"POPFile\" anti-spam engine. |
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Clinical Data Interchange Standards Consortium (CDISC) - CDISC is an open, multidisciplinary, non-profit organization committed to the development of industry standards to
support the electronic acquisition, exchange, submission
and archiving of clinical trials data and metadata for medical and biopharmaceutical product development.
The mission of CDISC is to lead the development of global, vendor-neutral, platform independent standards to improve data quality and accelerate product development in our industry. |
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Combining Probabilities - A good discussion of how to combine probabilities using a Bayes procedure. |
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Dynamic data analysis on the Web - Learn how to separate your Web site building tasks for an attractive and efficient end result. This article describes an adaptable approach which separates programming tasks from Web page design tasks. A strong conceptual model encourages good design, enables re-use of data definitions, and is well-suited to the construction of dynamic user interfaces. The author also illustrates the particular challenges you might encounter when you dynamically change the analysis of Web pages.
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Flaw of averages - The Flaw of Averages describes the fallacies that arise when single numbers (usually averages) are used to represent uncertain outcomes. |
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GHMM: Hidden Markov Model Library - The General Hidden Markov Model library (GHMM) is a freely available LGPL-ed C library implementing efficient data structures and algorithms for basic and extended HMMs. The development is hosted at Sourceforge, where you have access to the CVS, mailing lists and forums. |
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Inverse Problem Theory - PDF textbook on probability, monte carlo methods, and inverse probability (bayes) methods. |
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James Gentle - My interests include statistical computing, computational statistics, simulation, robust statistics, survey sampling, and computational finance. My interests in survey sampling include optimal design, calibration, and imputation. My interests in financial applications center primarily on the pricing of derivatives. |
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Java Distribution Functions - A translation of the R distribution functions from C to Java. The translation isn\'t entirely pretty (especially since some of the C code was originally translated from Fortran), but it seems to work. Classes implement the PDF, CDF, and (usually) quantile and random variate generation for the following distributions: beta, hypergeometric, normal, binomial, logistic, poisson,
cauchy, lognormal, signrank,
chisquare, negative_binomial, t,
exponential, noncentral_beta, tukey,
f, noncentral_chisquare, uniform,
gamma, noncentral_f, weibull,
geometric, noncentral_t, wilcox |
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Journal of Statistics Education (JSE) - Online journal for the teaching of statistics. |
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Journal of the Bernoulli Society - BERNOULLI is the journal of the Bernoulli Society for Mathematical Statistics and Probability, issued six times per year. The journal provides a comprehensive account of important developments in the fields of statistics and probability, offering an international forum for both theoretical and applied work. |
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Michael Friendly\'s Home Page - A good resource for learning about the visualization of categorical data. |
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Non-Uniform Random Variate Generation - Online book on algorithms for generating random variates. |
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Probability Surveys - Probability Surveys publishes survey articles in theoretical and applied probability. The style of articles may range from reviews of recent research to graduate textbook exposition. Articles may be broad or narrow in scope. The essential requirements are a well specified topic and target audience, together with clear exposition.
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Rainbow - Rainbow is a program that performs statistical text classification. |
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Selected Bookmarks for Jonathan G. Campbell - Userful set of bookmarks relating to Bayes theory, statistics, gis, kalman filtering, information theory and compression, math humor, etc... |
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Statistica Sinica - Statistica Sinica endeavors to meet the needs of statisticians faced with a rapidly changing world. It publishes significant and original articles that promote the principled use of statistics along with related theory and methods in quantitative studies, essential to modern technologies and sciences. I |
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Statistical Resources on the Internet - Some of the areas covered are statistical computing, basic statistics and advanced statistics including: multivariate theory, general psychometric theory, item response theory, latent structure analysis, multilevel modeling, missing value imputation, and Bayesian analysis. |
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StatSoft Electronic Textbook - This Electronic Statistics Textbook offers training in the understanding and application of statistics. The material was developed at the StatSoft R&D department based on many years of teaching undergraduate and graduate statistics courses and covers a wide variety of applications, including laboratory research (biomedical, agricultural, etc.), business statistics and forecasting, social science statistics and survey research, data mining, engineering and quality control applications, and many others. |
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The BUGS Project - Bayesian inference Using Gibbs Sampling is a piece of computer software for the Bayesian analysis of complex statistical models using Markov chain Monte Carlo (MCMC) methods. |
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The Little Handbook of Statistical Practice - The purpose of the online Handbook is to describe, for better or worse, what the author does rather than simply presenting theory and methods as they appear in standard textbooks. This is about statistical practice--what happens when a statistician deals with data on a daily basis. |
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The Realm of Visual Statistics - Includes an online textbook for learning statistics. The quality of the content for learning statistics is above average. An emphasis on the multimedia presentation of concepts. The research applications section is also worth looking at. |
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Virtual Laboratories in Probability and Statistics - The goal of this project is to provide free, high quality, interactive, web-based resources for students and teachers of probability and statistics. Basically, our project consists of an integrated set of components that includes expository text, applets, data sets, graphics, and other elements. |
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Wayne Woodward\'s home page - Software and papers on analyzing variability in
climate and other data. |
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What is principle components analysis anyway? (PDF) - Note that briefly explains the theory and practice of principle components analysis. |
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A Small, Portable 3D Engine |
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Jul 19, 2007 6:54 am
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This article will describe the evolution of my engine from a sample program to a full library of portable software rendering functions, and document this library, called pGL (portable GL). The library interface is based on OpenGL (as much as a set of TI-85 programs can be based on C), because it is very simple and easy to use. |
Top > Math > Geometry
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FONTMASTER.COM - Fonts To Download Free |
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Jul 13, 2007 11:41 pm
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Here at Fontmaster.com you will find hundreds of fonts to download free that are free to use royalty free. |
Top > Fonts
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YoLinux: Linux Fonts |
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Jul 13, 2007 12:04 pm
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Useful general tutorial on fonts under linux. Useful links and installation notes.
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Top > Sys Admin
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DeGraeve.com - The Projects of Steven DeGraeve |
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Jun 7, 2007 9:49 am
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The goal of DeGraeve.com is to provide free, high-quality, web-based tools that are easy to use for all users.
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Top > Web Development
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Perl Circus - Perl Tricks, Tips And Traps. |
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Jun 7, 2007 9:44 am
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Perl Circus has been serving up fresh buttered Perl tricks since 2001. |
Top > Perl
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Dedicated Server Setup Checklist |
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May 28, 2007 4:25 pm
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You’ve outgrown shared hosting and decided to start renting a server of your own. Since you’re still on a tight budget, you want an unmanaged server, where full responsibility for configuring and managing the server is yours. These are the steps I go through every time I set up a new server for web and database hosting. |
Top > Sys Admin
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Online Mathematics: Scalable Vector Graphics |
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May 6, 2007 10:50 am
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Scalable Vector Graphics (SVG) is the open source Worldwide Web Consortium (W3C) recommendation for two dimensional vector graphics. The combination of SVG and JavaScript is a powerful platform for creating interactive graphics, comparable to Flash and Java. SVG has been overlooked, however, partly because of incomplete browser support. This situation improved significantly in 2006 with the release in of Firefox 1.5 and Opera 9, both with native SVG capability. The first part of this article reviews the current status of SVG implementation and offers several examples with a mathematical flavor. The second part, for developers, explains one of the examples in detail. |
Top > SVG
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SVG Authoring Guidelines |
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May 6, 2007 10:49 am
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There are a lot of mistakes in the SVG documents currently found on the Web. It is important that these problems are addressed as soon as possible to prevent them from propagating into authoring tools and the SVG documents that people will write in the future. |
Top > SVG
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Five Basic Mistakes Not to Make in DNS |
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May 5, 2007 6:47 pm
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Here are five things you can do to make sure your DNS is in good shape and not causing problems for the rest of the Internet, which, by the way, also includes you. |
Top > Sys Admin > DNS
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Gaffer on Games |
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May 5, 2007 1:09 am
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Popular series of articles on game physics. |
Top > Games
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