Results 561–570 of 792 for /math/.(0.003 seconds)
Perl module that supplies statistical methods for perl5
This module provides basic functions used in descriptive statistics. It
has an object oriented design and supports two different types of data
storage and calculation objects: sparse and full. With the sparse
method, none of the data is stored and only a few statistical measures
are available. Using the full method, the entire data set is retained
and additional functions are available.
-Anton
<tobez@FreeBSD.org>
Perl module that calculates critical values of common statistical distributions
This Perl module calulates percentage points (5 significant digits) of
the u (standard normal) distribution, the student's t distribution, the
chi-square distribution and the F distribution. It can also calculate
the upper probability (5 significant digits) of the u (standard normal),
the chi-square, the t and the F distribution. These critical values are
needed to perform statistical tests, like the u test, the t test, the F
test and the chi-squared test, and to calculate confidence intervals.
-Anton
<tobez@FreeBSD.org>
Calculates a future value
This is an Oriented Object module that calculates a future value by using
existing values. The new value is calculated by using linear regression.
Library for translating and manipulating point cloud data
PDAL is a BSD licensed library for translating and manipulating
point cloud data of various formats. It is a library that is
analogous to the GDAL raster library. PDAL is focussed on reading,
writing, and translating point cloud data from the ever-growing
constellation of data formats that are being developed for working
with multi-dimensional emitted-pulse scanning systems. While PDAL is
not explicitly limited to working with LiDAR data formats, its
initial rollout is focused in that area.
Perl implementation of Linear Threshold Units
Statistics::LTU defines methods for creating, destroying, training and
testing Linear Threshold Units. A linear threshold unit is a 1-layer
neural network, also called a perceptron. LTU's are used to learn
classifications from examples.
-Anton
<tobez@FreeBSD.org>
Least squares line fit, weighted or unweighted
The Statistics::LineFit module does weighted or unweighted least-squares
line fitting to two-dimensional data (y = a + b * x). (This is also
called linear regression.) In addition to the slope and y-intercept, the
module can return the square of the correlation coefficient (R squared),
the Durbin-Watson statistic, the mean squared error, sigma, the t
statistics, the variance of the estimates of the slope and y-intercept,
the predicted y values and the residuals of the y values.
Perl module to perform ordinary least squares and other bivariate statistics
Statistics::OLS computes the estimated slope and intercept of the
regression line, their T-statistics, R squared, standard error of the
regression and the Durbin-Watson statistic. It can also return the
residuals.
-Anton
<tobez@FreeBSD.org>
Convert (La)TeX formulas to ASCII art
A Perl module that provides a mechanism to render (La)TeX formulae to ASCII
art.
Perl5 module to read and write netCDF files
A perl extension module for scientific data access via the netCDF API
Object-orientated uncertainty object
Number::Uncertainty provides an object-orientated uncertainty object. It stores
information about a value and its error bounds.