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 29.638.661 Times

Statistics::SDT 0.02

  Date Added: January 14, 2010  |  Visits: 630

Statistics::SDT

Report Broken Link
Printer Friendly Version


Product Homepage
Download (72 downloads)



Statistics::SDT Perl package contains signal detection theory measures of sensitivity and response-bias. SYNOPSIS use Statistics::SDT; $sdt = Statistics::SDT->new( { hits => 50, signal_trials => 50, false_alarms => 17, noise_trials => 25, correct => 2, } ); $d = $sdt->d_sensitivity(); $c = $sdt->decision_bias(); Signal Detection Theory algorithms (e.g., of d, A, decision bias), as prescribed by Stanislav & Todorov (1999). Both object- and function-oriented interfaces are provided. KEY VALUES For both object- and function-oriented styles, the following named parameters must be given as a hash-reference: either to the new constructor method, or (with the function-oriented style) into each function. Basically, either all of the first four parameters are required (in order to calculate the hit-rate and false-alarm-rate), or the required rates are themselves supplied. hits The number of hits. false_alarms The number of false alarms. signal_trials The number of signal trials. The hit-rate is derived by dividing the number of hits by the number of signal trials. noise_trials The number of noise trials. The false-alarm-rate is derived by dividing the number of false-alarms by the number of noise trials. alternatives The number of response alternatives. Default = 2 (for the classic signal-detection situation of discriminating between signal+noise and noise-only). If the number of alternatives is greater than 2, the measure of sensitivity, when calling d_sensitivity, is based on the Smith (1982) algorithms. correct A parameter that indicates whether or not to perform a correction on the number of hits and false-alarms as a corrective when the hit-rate or false-alarm-rate equals 0 or 1 (due, e.g., to strong inducements against false-alarms, or easy discrimination between signals and noise). This is relevant to all functions that make use of the inverse phi function (all except a_sensitivity and griers_bias). If set to greater than 1, the loglinear transformation is applied, i.e., 0.5 is added to both the number of hits and false-alarms, and 1 is added to the number of signal and noise trials. These adjustments are made irrespective of the extremity of the rates themselves. If set to 1, extreme rates (of 0 and 1, only) are replaced with the number of signal/noise trials, moderated by a value of 0.5 (specifically, where n = number of signal or noise trials: 0 is replaced with 0.5 / n; 1 is replaced with (n - 0.5) / n. Stanislav and Todorov (1999) advise that the latter correction is the most common method of handling extreme rates, but that it might bias sensitivity measures and not be as satisfactory as the loglinear transformation applied to all hits and false-alarms. If set to zero (the default), no correction is performed to the calculation of the rates. This should only be used when you are using (1) the parametric measures and are sure the rates are not at the extremes of 0 and 1; or (2) the nonparametric algorithms (a_sensitivity and griers_bias). An alternative to these corrections is, indeed, to use the nonparametric measures. hr This is the hit-rate. Instead of passing the number of hits and signal trials, give the hit-rate directly - but, if doing so, ensure the rate does not equal zero or 1 in order to avoid errors thrown by the inverse-phi function (which will be given as "ndtri domain error"). far This is the false-alarm-rate. Instead of passing the number of false alarms and noise trials, give the false-alarm-rate directly - but, if doing so, ensure the rate does not equal zero or 1 in order to avoid errors thrown by the inverse-phi function (which will be given as "ndtri domain error")..

Requirements: No special requirements
Platforms: Linux
Keyword: Detection Theory In Order To Libraries Noise Number Sdt Sdt Perl Sensitivity Signal Signal Detection Signal Detection Theory Statisticssdt Trials
Users rating: 0/10

License: Freeware Size: 7.17 KB
USER REVIEWS
More Reviews or Write Review


STATISTICS::SDT RELATED
Utilities  -  protector 1.00.11
protector scans e-mail attachments in order to identify those that could (by nature of their type) contain viruses or other undesirable content, and replaces them with a warning message. Protector is designed to be used on a unix mail gateway...
225.28 KB  
Utilities  -  spamstats 0.6c
Spamstats is a Perl script that analyses spamassassin+mailer logs in order to extract useful informations about spam traffic. Spamstats was originally written in 2002 for the Council of Europe, and has since then it was modified to support new...
25.6 KB  
Log Analyzers  -  adcfw-log 0.10.0
adcfw-log is a tool for analyzing firewall logs in order to extract meaningful information. It is designed to be a standalone script with very few requirements that can generate different kinds of reports, such as fully formatted reports of what...
83.97 KB  
Utilities  -  RPM Package Maker 1.1
RPM Package Maker is a frontend for other linux tools in order to help linux users to create RPM packages quickly and easily. Since version 0.8 minimal spec files are kept in: /usr/src/packages/SPECS/mini Whats New in This Release: - Small...
563.2 KB  
Utilities  -  DVB Remote Key Editor 0.2.1
DVB Remote Key Editor project was made in order to have an easy way of modifying the keymaps of DVB-T remotes which are usually hardcoded in the corresponding kernel-modules. Currently this works for the following models: Haupauge Win-TV...
14.34 KB  
Utilities  -  devmon 1.5
devmon is a daemon that monitors sys-fs files in order to detect plugs of usb storage devices (ie : flash cards). When a device is detected, devmon mounts it and start a dockapp that allows to launch your favorite filemanager (left click) or...
49.15 KB  
Business  -  Legal Case Management 0.6.3
The legal case management (LCM) system is a software aimed for use by not-for-profit legal advice centres in order to make better follow-ups of their cases, including client consultations and court events (see also: software overview)..
450.56 KB  
Audio Tools  -  UPG 0.3.5
UPG was developed in order to combine wide range content of online radio-stations with the convenience and technological advantages of podcasting. The idea of UPG is to rip mp3 streams from internet and "convert" it to podacsts in fully automatic...
153.6 KB  
3D Graphic Tools  -  GRSlideShow 3.1
GRSlideShow project is everything you need in order to put your pictures online. Put the GRSlideShow script in the parent directory of your albums and youre done. Nothing else needed. Put your pictures in different directories, each directory is...
37.89 KB  
Modules  -  Post Word Count 1.1
The mdv_post_word_count(true); function can be used in the loop in order to display the number of words for a single post.InstallationUnpack and upload it to the /wp-content/plugins/ directory.Activate the plugin through the 'Plugins' menu in...
 
NEW DOWNLOADS IN PROGRAMMING, LIBRARIES
Programming  -  FLEX-db Digital Asset Manager 3.0.9
FLEX-db - an enterprise Digital Asset Manager (DAM). It ingests and links metadata with files, creates thumbnails, and processes files using business rules. FLEX-db has a JSP client, Java app server for file input and output and an EJB metadata...
21.57 MB  
Programming  -  Libicom 0.9.0
The libicom library is a character based dynamicly linked library for Linux. It is used to remotely control the Icom IC-R8500 wide band receiver via an RS232 link. All call and return parameters to the control functions are character string based....
20.48 KB  
Programming  -  dotdesktop 0.3
Dotdesktop library provides ability to parse desktop entry file and access the information in a convenient way. Desktop entry file format is defined by freedesktop.org, it is used to describe information about an application such as the name and...
327.68 KB  
Programming  -  Cedalion for Linux 0.2.6
Cedalion is a programming language that allows its users to add new abstractions and define (and use) internal DSLs. Its innovation is in the fact that it uses projectional editing to allow the new abstractions to have no syntactic limitations.
471.04 KB  
Programming  -  libyasl 0.2
Libyasl is a C++ class library to easily realize TCP/UDP/Multicast clientsand servers in IPv4 and IPv6 environments under GNU/Linux systems.
143.36 KB  
Libraries  -  wolfSSL 3.11.0
The wolfSSL embedded SSL/TLS library is a lightweight SSL library written in ANSI standard C and targeted for embedded and RTOS environments - primarily because of its small size, speed, and feature set. It is commonly used in standard operating...
2.73 MB  
Libraries  -  EuGTK 4.8.9
Makes it easy to develop good- looking, fast, cross-platform programs that run on Linux, OS X, and Windows. Euphoria is a very fast interpreted/compiled language with straight-forward syntax. EuGTK allows programming in a clean, object-oriented...
10.68 MB  
Libraries  -  Linux User Group Library Manager 1.0
The LUG Library Manager is a project to help Linux User Groups start their own library. A LUG library is helpful to the community at large because it increases access to information, and gives everyone the opportunity to become more knowledgeable.
5.35 KB  
Libraries  -  Module::MakefilePL::Parse 0.12
Module::MakefilePL::Parse is a Perl module to parse required modules from Makefile.PL. SYNOPSIS use Module::MakefilePL::Parse; open $fh, Makefile.PL; $parser = Module::MakefilePL::Parse->new( join("", ) ); $info = $parser->required;...
8.19 KB  
Libraries  -  sqlpp 0.06
sqlpp Perl package is a SQL preprocessor. sqlpp is a conventional cpp-alike preprocessor taught to understand SQL ( PgSQL, in particular) syntax specificities. In addition to the standard #define/#ifdef/#else/#endif cohort, provides also...
10.24 KB