Software Listing: Measure

Normalized mutual entropy provides a measure of the diversity of a two dimensional matrix. It takes mutual entropy and normalizes for the marginal entropy of the variable of interest (column variable in the code). See screen shot or embedded references for formula. This code is used for the estimation of biodiversity in ecological systems, but is not limited to such applications. The code can be used in any system where the diversity of variable interactions is of interest. Please see follow-ups for code written for the inclusion of more than two variables..

  • Platform: Matlab, Scripts

In signal processing, cross-correlation is a measure of similarity of two waveforms as a function of a time-lag applied to one of them. This is also known as a sliding dot product or inner-product. It is commonly used to search a long duration signal for a shorter, known feature. It also has applications in pattern recognition, single particle analysis, electron tomographic averaging, cryptanalysis, and neurophysiology..

  • Publisher: Rabi
  • Date: 13-05-2013
  • Size: 10 KB
  • Platform: Matlab, Scripts

Take an image and measure holes in it. Generate a distribution..

  • Platform: Matlab, Scripts

This program outputs a graphical & numerical image quality measure based on Singular Value Decomposition. For the given images, Blockwise SVD is taken and image quality measure is derived. For details on the implementation, please refer Aleksandr Shnayderman, Alexander Gusev, and Ahmet M. Eskicioglu, "An SVD-Based Grayscale Image Quality Measure for Local and Global Assessment", IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 15, NO. 2, FEBRUARY 2006. Those who are new to Matlab Programming can see the "SampleUsage.m" file for the usage of the script "SVDQualityMeasure.m". Those who are already familiar with Matlab Programming can directly use the script "SVDQualityMeasure.

  • Publisher: Athi
  • Date: 15-06-2013
  • Size: 123 KB
  • Platform: Matlab, Scripts

The m-file provides a tool to calculate the Bhattacharyya Distance Measure (BDM) between two classes of normal distributed data. The BDM is widely used in Pattern Recognition as a criterion for Feature Selection. Directly calculation may result in divide by zero error due to possible (near) singularity of cov(X1)*cov(X2). The improved code uses the Cholesky factorization for the normal cases but uses sqrtm for near singular cases..

  • Publisher: Yi Cao
  • Date: 09-06-2013
  • Size: 10 KB
  • Platform: Matlab, Scripts

The provided functions demonstrate a histogram-based measure for class separability, given the samples from two classes (binary classification problem). The proposed error classification estimation method is described in (B) and it is based on estimating the pdf of each class using histograms. The function that estimates the class seperability method is computeHistError(). Function theoreticalError() computes the theoretical error for two Gaussian distributed classes. Function testClassSeperability() calls the other two functions and displays the results for two Gaussian distributed functions. It has to be noted that computeHistError() can be used for any kind of class distribution, since it estimates the pdf of each class using the histogram method.

  • Platform: Matlab, Scripts

COMPUTEGTOM computes the generalized overlaping measure algorithm (GTOM) [1] Authors Joaquin GodoT-i <jgoni@unav.es> & IdoT-igo Martincorena <imartincore@alumni.unav.es> University of Navarra - Dpt. of Physics and Applied Mathematics & Centre for Applied Medical Research. Pamplona (Spain). November 22nd, 2007 batchComputeGTOM.m contains an example that loads and adjacency matrix and computes the GTOM matrix. Finally, a hierarchical clustering of GTOM matrix is carried out. Type 'help computeGTOM' for further information and examples. References GTOM [1] Yip A, Horvath S (2007) Gene network interconnectedness and the generalized topological overlap measure BMC Bioinformatics 2007, 8:22 TOM [2] Ravasz E.

  • Platform: Matlab, Scripts

Measure percentage of Accuracy and the Rand index of clustering results The number of class must equal to the number cluster Output Acc = Accuracy of clustering results rand_index = Rand's Index, measure an agreement of the clustering results match = 2xk matrix which are the best match of the Target and clustering results Input T = 1xn target index idx =1xn matrix of the clustering results EX: X=[randn(200,2);randn(200,2)+6,;[randn(200,1)+12,randn(200,1)]]; T=[ones(200,1);ones(200,1).*2;ones(200,1).*3]; idx=kmeans(X,3,'emptyaction','singleton','Replicates',5); [Acc,rand_index,match]=Acc_measure(T,idx).

  • Platform: Matlab, Scripts

The objective of this program is to be able to measure distance from an object to the web cam you are using, this measure is given in centimeters(cm). The interface is very simple, it consists of an axes space that lets you visualize what the cam is seeing, the program will draw a rectangle in the outline of the object that it's focusing. You'll be able to see that there also are 2 buttons, one that says 'Start Cam', and the second one 'Distance'. To make the program work you'll need objects that are very white, in my case I used the screen of an ipod touch, I also tried with a paper ball, and a white ruler, but I'm sure that any white object should work as long as you have the right brightness in the room.

  • Publisher: Laia
  • Date: 05-05-2013
  • Size: 10 KB
  • Platform: Matlab, Scripts

Object Oriented Standard of Measure Java Library for unit conversion, calculation, lookup, etc
Java Measure License - GNU Library or Lesser General Public License (LGPL).

  • Platform: Linux, Mac OS X, WinOther

Level Measuring Set is an utility that can measure the frequency and diplays it in a graph.

Also, the application measures the relative level of the sound. You can use it to find out the frequency of your instrument.

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  • Platform: Win7 x64, Windows 7

MezerTools is a useful and easy to use program that measure screen elements in pixels and capture screen.

MezerTools is a reliable application created for UI designers & programmers. If you want to resize the calipers by dragging the "fixed" portion, simply hold CTRL or SHIFT while dragging the mouse.


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  • Platform: Win7 x64, Windows 7, WinOther, WinVista

MS Excel add-in that makes unit of measure conversions for units of measure in different categories(Amount of substance, Area, Density, Dynamic viscosity, Electric current, Enthalpic flow, Enthalpy, Entropic flow, Entropy, Length, Linear speed, Luminous intensity, Mass, Mass flow, Pressure, Temperature, Thermal conductivity, Time, Volume, Volume flow, and othes). The user-friendly, intuitive, interface will enable even first-time users to rapidly perform all their necessary conversions. Extends MS Excel with specific user interface providing also a spreadsheet UMConvert function used to perform conversions in Excel ranges.

  • Platform: Win7 x32, Win7 x64, WinOther

Transparent ScreenRuler enables users to accurately measure distances on their desktop.

This application comes is handy not only to web designers or programmers, but also to multimedia designers.

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  • Platform: WinOther

yaRuler is a lightweight and useful application that was designed in order to help you measure distances onto your screen.

This utility doesn't require installation and is ready to run right out of the box so take it for a spin to see just how useful it can actually be for you.

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  • Platform: Win7 x64, Windows 7, WinOther, WinVista

Philer Ruler PRO is a handy utility designed to enable you to easily measure anything on your desktop in pixels, inches, centimeters, as well as typographic picas. The ruler works with a range of perfect accuracy due to DPI parameter (original data on your monitor).

You can set the needed markers-serifs, in order to change the orientation of the line, its dimensions and position relative to the screen. By using additional tool Desktop Ruler you can also measure the distance at an angle, and Magnifier (which is added in Informatuion Form) will be an excellent guide for the installation of the main window in the right place.

  • Platform: Win2000, Windows 7, WinOther, WinServer, WinVista, WinVista x64
  • Jumble
  • License: Freeware
  • Price: 0.00
  • Rating

Jumble is a handy, very useful Java mutation tool specially designed to enbale developers to measure the effectiveness and coverage of JUnit test suites.

Do you want to know how good your JUnit tests are?

Jumble will tell you: from 0% (worthless) to 100% (angelic!).

Jumble is a class level mutation testing tool that works in conjunction with JUnit. The purpose of mutation testing is to provide a measure of the effectiveness of test cases.

A single mutation is performed on the code to be tested, the corresponding test cases are then executed. If the modified code fails the tests, then this increases confidence in the tests.

  • Platform: WinOther

ProDelphi x64 is a tool to measure the runtime of programs written in Delphi Object Pascal. First successful industrial usage of ProDelphi was in February 1998. Since then ProDelphi has been permanently improved, also a lot of customer suggestions were integrated.

The principle of source instrumenting, the sophisticated measurement correction algorithm and the granularity of 1 CPU-cycle guarantee an outstanding measurement accuracy. Even very small or multiple nested functions are measured precisely. After profiling with ProDelphi you know where the bottle neck is, not where it might be (see profiler types ).

  • Platform: Win7 x64, WinOther, WinVista x64
  • pyuds
  • License: Freeware
  • Price: 0.00
  • Rating

pyuds was specially designed as a Python library that can measure uncertainty the in Dempster-Shafer theory of evidence.

The functionals supported are Generalized Hartley (GH) uncertainty functional, Generalized Shannon (GS) uncertainty functional, and Aggregate Uncertainty (AU) functional.

The library can be utilized either through its API, or through a user-friendly web interface.


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  • Platform: WinOther

Compu Eye, Leaf & Symptom Area is a handy and reliable application designed to measure the total area of a leaf.

In addition, the application is also able to perform detailed measurements on visible symptoms of the leaf. What's more, the software provides a high accuracy compared to the traditional measurement methods.

Note: Registration is free for scientific use and can be obtained by sending an email to the developer.


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  • Platform: Windows 7, Windows 8, WinOther, WinVista

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