Regres Plus is an advanced mathematical modeling software that is extremely user-friendly, offering state-of-the-art features to its users.
General
- The ability to model simple, univariate equations and stochastic models
- Robust goodness-of-fit testing to optimize the model
- Creates confidence intervals for parameters using the BCa technique
- Optional freezing of initial parameter estimates
- Provides choice of optimization criterion
Deterministic Modeling
- 22 Built-in families of models which allow users between 1 to 10 parameters
- Special Simulated Annealing mode helps to find an initial parameter estimate
- Optimization criteria includes Least-squares, Minimum average deviation, and weights (for the dependent variable, y)
- Generates a listing of fitted data and residuals
Stochastic Modeling
- Includes 56 Built-in distributions (30 Continuous, 17 Continuous binary mixtures, 5 Discrete, 4 Discrete binary mixtures)
- Optimization criteria include Maximum-likelihood (all), Minimum Kolmogorov-Smirnov statistic (continuous variates), and Minimum Chi-square (discrete variates)
- Optional discrete input may be grouped
- Creates samples of random variates (textfiles)
In addition to the above features, Regress Plus provides intelligent dialogs that allow it to run unattended and/or in the background. It also allows unlimited comments by way of textfile input and produces both text and graphical output. A single keystroke allows the user to make a plot which can be saved as a PICT. Extensive documentation in PDF format is also available, including a tutorial (50 pp.), users' guide (36 pp.), technical details and references (8 pp.), and a compendium of common probability distributions (120 pp.). Four pages are dedicated to error messages and there are numerous sample datafiles available to help the user get started.
Regress+ is a software tool that is unmatched in its functionality and ease of use, making mathematical modeling a breeze for both deterministic and stochastic models.
Version 2.5.3: N/A