Approximation


CatMV CatMV 1.0
The CatMV program is a realization of the "Caterpillar"-SSA method for analysis of time series, which may contain missing values. The implemented algorithms result in extraction of additive components of time series such as trends and periodic components, with simultaneous filling in the missing data (if any). The program is able to perform forecasting if to add missing values after the last point of the time series.
time series, forecast, forecasting, analysis, trend, periodicities, seasonalities, statistics, singular spectrum analysis, ssa,
 
Numap7 Numap7 7.06
Freeware for fast training, validation, and application of regression/approximation networks including the multilayer perceptron, functional link network, piecewise linear network, self organizing map and K-Means. C source for applying trained networks. Extensive help, utilities for pre-processing and handling of training data are also provided. User-supplied txt-format training data files, containing rows of numbers, can be of any size.
neural network, multilayer perceptron, fast training, validation, regression, approximation,
FindGraph FindGraph 1.921
FindGraph is a curve fitting and digitizing tool for engineers, scientists and businesss. Convert plots back to X,Y data from any published report for later processing and manipulations. The program offers 12 generic fits, including linear and nonlinear regression, Logistic functions, Fourier approximation, Neural Networks, B-splines curves, cycles extraction, SSA forecasting, and plus a library of over 300 industry-specific formulas.
math, graph, curve, fitting, equation, chart, plotting, visualize, digitizing, drawing,
 
SurGe SurGe 6.30
SurGe is a computer program which enables to generate a surface as an interpolation (approximation) function of two independent variables; implements an interpolation / approximation method called ABOS which produces a surface comparable to a surface created by Kriging or Minimum curvature method.
mapping software, surface, interpolation, approximation, kriging, minimum curvature,