Download Shareware and Freeware Software for Windows, Linux, Macintosh, PDA

line Home  |  About Us  |  Link To Us  |  FAQ  |  Contact

Serving Software Downloads in 976 Categories, Downloaded 29.894.246 Times

MyFisher22 1.0

  Date Added: July 08, 2013  |  Visits: 227

MyFisher22

Report Broken Link
Printer Friendly Version


Product Homepage
Download (18 downloads)



Fisher's exact test of 2x2 contingency tables permits calculation of precise probabilities in situation where, as a consequence of small cell frequencies, the much more rapid normal approximation and chi-square calculations are liable to be inaccurate.The Fisher's exact test involves the computations of several factorials to obtain the probability of the observed and each of the more extreme tables. Factorials growth quickly, so it's necessary use logarithms of factorials. This computations is very easy in Matlab because x!=gamma(x+1) and log(x!)=gammaln(x+1).I rewrote this function several times: now the fully vectorization, the preallocation, the using of a recursive relationship for the Fisher's exact test on 2x2 matrix and the using of logarithm greatly speed up the execution.It is faster than the previously submitted Fisherextest. In fact, I performed this test comparing the core of both scripts (deleting the input error check, the code to display results and compute the power). X=[70 30; 29 80] (100 tables to evaluate)times=zeros(1,1000); for I=1:1000, tic; myfisher22(X); times(I)=toc; end, median(times)ans =1.3000e-4The same for Fisherextestans =0.0024So my function in about 18.5 fold fasterActually, the function also computes the mid-P correction to make the test less conservative.Moreover, the routine computes the Power and, if necessary, the sample sizes needed to achieve a power=0.80 using a modified asymptotic normal method with continuity correction as described by Hardeo Sahai and Anwer Khurshid in Statistics in Medicine, 1996, Vol. 15, Issue 1: 1-21.More other details on code are available on: http://www.advancedmcode.org/myfisher22.htmlYou can visit my homepage http://home.tele2.it/cardilloMy profile on XING http://www.xing.com/go/invita/13675097My profile on LinkedIN http://it.linkedin.com/in/giuseppecardillo

Requirements: No special requirements
Platforms: Matlab
Keyword: 13000e4 Computes Conservative Correction I3d11000 Mediantimes Myfisher Times Dzeros Timesi Dtoc
Users rating: 0/10

License: Shareware Size: 10 KB
USER REVIEWS
More Reviews or Write Review


MYFISHER22 RELATED
Education  -  Zmanim 1.1.1
Zmanim project can computes zmanim, the times (according to Jewish law) by which an observant Jew must complete specific prayers. The default branch is a console version for Linux, and the QT branch is a GUI version for Linux using the QT GUI...
77.82 KB  
Development Tools  -  Convolution integral approximation via trapezoidal quadrature rule 1.0
This code computes the approximation of the convolution integral (*) between two functions, f(t) and g(t), sampled at the times t1,t2,...,tm (unit spacing), via the trapezoidal quadrature rule. To compute the integral with other than unit spacing,...
40.96 KB  
Graphics Editors  -  Color Correction Wizard 0.95
Color Correction Wizard is an all-in-one color correction tool that makes batch color correction a snap! The program effectively solves poor contrast and color balance problems turning dull digital images into splashes of color. Moreover, the...
2.84 MB  
Mathematics  -  Speaking Times Table Tutor 1.0.0
Makes times tables fun to learn for your kids. Get a child off to a great start in maths! Keeps them occupied and out of trouble. Times Table Tutor makes an ideal gift for a child at any time of the year. Whether its a, birthday, easter, christmas...
695.46 KB  
Libraries  -  Boehm-Demers-Weiser Conservative Garbage Collector 7.0
The Boehm-Demers-Weiser conservative garbage collector can be used as a garbage collecting replacement for C malloc or C++ new. Boehm-Demers-Weiser Conservative Garbage Collector allows you to allocate memory basically as you normally would,...
1024 KB  
Mathematics  -  Times Table 1.2
The objective of this Times Table Program is to make math fun and interesting. As the student continues to get correct answers to the questions, the Times Table grid will begin to fill up more and more. This should build excitement and a feeling...
590.04 KB  
Mathematics  -  Auriga Times Tables 1.0
Today's technology can help you learn the times tables without you notice. Discover how the subliminal technology that is used in science and marketing can help you learn the times tables under the premise that the regular conscious way of...
33.87 KB  
Home & Leisure  -  Prayer Times PC for Mac OS X for Mac OS 1.17
The worlds first multi-platform prayer times software that gives you accurate timings, Qibla direction, Athan (Azaan/Azan), and much more for thousands of cities worldwide! An Islamic product thats must for all Muslims worldwide.
4.8 MB  
Development Tools  -  Defect Correction Method 1.0
Implementation of Defect Correction Method for iteratively solving a linear equation system. A Preconditioning strategy can be used to accelerate convergence.
10 KB  
Multimedia  -  Polygon_Intersection 1.0
This function computes n-times intersection region of shapes collection and allows to identify every intersection region in which shapes intersect.The function takes one argument as input, a structure S containing geometrical descriptions of...
20.48 KB  
NEW DOWNLOADS IN SCRIPTS, DEVELOPMENT TOOLS
Scripts  -  Freelancer Script 5.05
Main Features: 100% Secured. Email Support (3 Years). FREE Updates (3 Years). Post projects. Featured projects. Private projects. Sealed projects. Edit/delete projects. Select freelancers....
5.49 MB  
Scripts  -  B2B Script 4.20
Main Features: 100% Secured. Email Support (3 Years). FREE Updates (3 Years). Sign-up Account (Registration of account). Lead generation tools (for the sellers). Email verification to...
5.49 MB  
Scripts  -  B2C Script 5.06
Main Features: 100% Secured. Email Support (3 Years). FREE Updates (3 Years). The script comes with totally editable site colors, icons and graphics Multilevel categories allows extensive browsing Admin can change Category ordering or...
5.49 MB  
Scripts  -  Social Networking Script 2.86
Main Features: 100% Secured. Email Support (3 Years). FREE Updates (3 Years). Registration with name, email, password, date of birth etc. User can add multiple school, college, university with start...
5.49 MB  
Scripts  -  Business Networking Script 8.04
Main Features: 100% Secured. Email Support (3 Years). FREE Updates (3 Years). Ajax based interface. Profile creation. Different types of profile. Profile for jobseekers, employers and employed...
5.49 MB  
Development Tools  -  VMP Viewer 1.0
This is a very rudimentary tool to visualize the VMP files generated by BrainVoyager. Useful to share files with people who do not have BV.
10 KB  
Development Tools  -  Sending reports and timestamped file by emailing 1.0
main executing reference usage:[1] usage_send_mail.mIllustrates email sending with multiple separate files or single timestamped tar file. Attachment failure is properly handled, with continuation of report emailing without the attachment.[2]...
768 KB  
Development Tools  -  IrisMVC 2.0 rc1
IrisMVC is an OOP PHP framework that developers can use as a strong and secure foundation to build on various web applications following the Model-View-Controller (MVC) pattern. It provides the basic functionality developers need, without...
51.2 KB  
Development Tools  -  7-Zip for Script 4.42
7-Zip is a file archiver with a high compression ratio.Features:- High compression ratio in new 7z format with LZMA compression- Supported formats:- Packing / unpacking: 7z, ZIP, GZIP, BZIP2 and TAR- Unpacking only: RAR, CAB, ISO, ARJ, LZH, CHM,...
624.64 KB  
Development Tools  -  Barnardextest 1.0
This file, as the Fisher's exact test, performs the exact probability test for a table of frequency data cross-classified according to two categorical variables, each of which has two levels or subcategories (2x2). It is a non-parametric...
10 KB