Probability
This include a MEX-DLL file which is an implementation of R L Siddon's refined method by Jacob for the calculation of ray path integral in PET/CT system image reconstruction. This is based on Line Intersection Length model to calculate probability matrix elements. Inputs are the LOR number and a...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (52): PET reconstruction system matrix Download |
GLDM calculates the Gray level Difference Method Probability Density Functions for the given image. This technique is usually used for extracting statistical texture features of a digital mammogram.For details on the Gray level Difference Method, refer the following paperJ. K. Kim and H. W. Park,...
Platforms: Matlab
License: Freeware | Size: 71.68 KB | Download (46): Texture Feature Extraction - GLDM Download |
This code implements and plots the exact numerical solution of the Ornstein-Uhlenbeck process and its time integral. The numerical method here used was published by D.T. Gillespie in 1996 in the journal Physical Review E.The probability density function and its plot for the Ornstein-Uhlenbeck...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (50): Exact Numerical Simulation of the Ornstein-Uhlenbeck Process Download |
Perform Viterbi Decoding to find the most likely path and probability of the sequence 'seq' for the system defined as follows:p is the initial state probability matrixA is the State transition matrixB is the Output matrix where possible outputs are mapped tointegers 1,2,...'end_prob' state is the...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (43): Viterbi decoding - most probable path Download |
General implementation of matlab version of Viterbi algorithm specifically written for gene structure finding problem in mind. However, it can be modified to suit the goal of a user.Input:Transition Probability MatrixEmission Probability MatrixInitial Probability MatrixStates Matrix (ie....
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (43): General Viterbi Algorithm Download |
Wigner3j(j1,j2,j,m1,m2,m) returns the Wigner 3j-symbol, where j1, j2, j, m1, m2, and m are half-integers. Physically, the Wigner 3j-symbol is closely related to the Clebsch-Gordon coefficient , the square of which is the probability that a system of two particles with angular momentum j1 and j2...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (54): Wigner3j.m Download |
A Dynamic environment is one in which either the obstacles or the goal or both are in motion. In most of the current research, robots attempting to navigate in dynamic environments use reactive systems. Although reactive systems have the advantage of fast execution and low overheads, the tradeoff...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (44): Temporal Potential Function based Path Planner for Dynamic Environments Download |
The following program is written to simulate a randomly generated message under BSC(p) channel. It examines whether or not the generator polynomial is strong enough to be used at a given packet size and crossover probability p. Error patterns are rondom.
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (41): CRC control simulation Download |
There are two issues with the Pearson type IV distribution: (I) the complex gamma function entering the normalization constant in the probability density function (pdf) and (II) the complex Gauss hypergeometric function entering the cumulative distribution function (cdf). For the complex gamma...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (45): In sample Value at Risk and backtesting with the Pearson type IV distribution Download |
Association rules are a simple but very useful form of data mining that describe the probabilistic co-occurrence of certain events within a database. They were originally designed to analyse market-basket data, in which the likelihood of items being purchased together within the same transaction...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 501.76 KB | Download (40): ARMADA Data Mining Tool Download |
The Central Limit Theorem (CLT) states that the sample average of N i.i.d. random variables approaches the normaldistribution.This script displays the probability density function of the sample average of N i.i.d variables with respect to N. The variables can be distributed according to a chi-2,...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (40): Illustration of the Central Limit Theorem Download |
Features of this implementation of LDA:- Allows for >2 classes- Permits user-specified prior probabilities- Requires only base MATLAB (no toolboxes needed)- Assumes that the data is complete (no missing values)- Has been verified against statistical software- "help LDA" provides usage and an...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (39): LDA: Linear Discriminant Analysis Download |
The definition of mutual information could resort to wiki:http://en.wikipedia.org/wiki/Mutual_informationFor marginal mutual information, we say it is :I(A,B)=sum sum P(A,B) log[P(A,B)/P(A)P(B)]For conditional mutual information, we say it is :I(A,B|C)=sum sum P(A,B|C)...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (51): Mutual Information In probability theory and information theory Download |
This function implements bivariant Gaussian kernel density estimation. It can be used to estimate bivariant probability density function (pdf), cumulative distribution function (cdf) and inversed cdf (icdf) from a set of random data. The code is programmed in a way to be suitable for beginners to...
Platforms: Matlab
License: Freeware | Size: 215.04 KB | Download (41): Bivariant Kernel Density Estimation Download |
To run the GUI we need to unzip the content of archive in the current Matlab Directory. Run M-file and chose to display Time Evolution versus Probability Density for fixed year and banc.
Platforms: Matlab
License: Freeware | Size: 81.92 KB | Download (44): Financial GUI Download |
This m-file performs the conditional as well as the Chi-squared corrected for discontinuity McNemar's exact test for two dependent (correlated) samples that can occur in matched-pair studies with a dichotomous (yes-no) response. Dependent samples can also occur when the same subject is measured...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (43): McNemarextest Download |
R = RCR(S) computes the semi-edge-length of the mean-centered hypercube with 95% probability given S, which is either a covariance matrix or a vector of standard deviations from a multivariate normal distribution. If S is a real, nonnegative vector, RCR(S) is equivalent to RCR(DIAG(S.^2)). Scalar...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 81.92 KB | Download (41): Rectangular Confidence Regions Download |
RANDPDF returns the matrix of random numbers from probability density distribution defined in p and px. p are the density (the y axis) and px are the value (the x axis) of the pdf. p and px must be of the same length. dim define the output matrix dimensions, for example dim=[100 3] define the...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (39): Random numbers from a user defined distribution Download |
Usage: [p, Q]= chi2test(x) The chi-squared test.Given a number of samples this function tests the hypothesis that the samples areindependent. If Q > chi2(p, nu), the hypothesis is rejected. Each column represents a variables, each row a sample. If you find any errors, please let me know: ....
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (43): chi2test Download |
LAPLACEOFPARETO evaluates the Laplace-Stietljes transform (LST) of the Paretodistribution with parameters a and b. Specifically, this function evaluatesthe LST E[exp(-sX)] of a random variable $X$ which has Pareto distribution$F(x)=1-frac{b^a}{(b+x)^a}$, where s>0, a>0, b>0. The formula used...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (45): Evaluation of the Laplace transform of the Pareto distribution Download |