Software Listing of Author : "Klaus Schittkowski"

The software system solves constrained nonlinear parameter estimation problems. Synonyms are data fitting, nonlinear regression, parameter identification, curve and surface fitting. The numerical methods are based on highly efficient Gauss-Newton-SQP algorithms. Model functions are defined in a modeling language called PCOMP and are interpreted and evaluated during runtime.

General: Arbitrary fitting criteria depending on parameters to be estimated, additional nonlinear equality or inequality constraints, and optionally on a second independent model variable

Numerical routines: Gauss-Newton-type SQP methods, automatic differentiation, alternative norms (sum of absolute values, maximum of absolute values), confidence intervals for estimated parameters, correlation and covariance matrix, identification of significance...

  • Platform: WinOther, WinVista

The system solves constrained nonlinear parameter estimation (nonlinear regression, data, curve and surface fitting) problems based on ODEs, DAEs, PDEs, PDAEs, steady-state systems, Laplace equations, and analytical functions. A statistical analysis provides confidence intervals, correlation and covariance matrix, identification of significant parameters, and allows optimum experimental design. Model equations are defined in a modeling language called PCOMP and are interpreted and evaluated during runtime. General: Arbitrary fitting criteria depending on the solution of a dynamical system, e.g., of a differential equation, and the parameters to be estimated; additional nonlinear equality or inequality constraints, second independent model variable called concentration Numerical routines: Gauss-Newton-type SQP methods for least...

  • Platform: WinOther, WinVista

The software system allows to solve constrained nonlinear programming problems by an efficient sequential quadratic programming (SQP) method. A nonlinear objective function is to be minimized subject to nonlinear equality or inequality constraints. The mathematical method represents the scientific state-of-the-art. Model functions are defined in a modeling language called PCOMP and are interpreted and evaluated during runtime. It is assumed that all nonlinear functions are differentiable. Gradients are computed automatically. EASY-OPT Express is particularly useful for classroom exercises of optimization courses or to become familiar with optimization routines before starting a real life implementation. The mathematical theory of the algorithm is described in the documentation and the usage of the system is outlined in detail....

  • Platform: WinOther
New Reviews

Print Inspector

Whether you are using a printer connected to your local desktop computer or a print server sometimes you need to see whats going on in your printer by having a close look at the print jobs sent by the users. Print Inspector is such type software ...

Disk Genius

Disk Genius was formerly known as Partition Guru which is an all-in-one solution for disk partition management, data recovery and disk repairing. It can recover lost files from partition, backup and restore partition table, clone partition or clone ...

Safe In Cloud

It is quite difficult to find any computer users nowadays who do not need to use the web, for any purpose. Whether it is for education or entertainment, the web is your best resource. You also need to use various online services for banking, ...


Nowadays, a majority of PC users resort to digital image editing once in a while. It may be required for retouching image captured in smart phones or for creating an album in Facebook. For some people, tinkering with digital images is a pastime too. ...

Panda Cloud Cleaner

PC security has become a tricky and complicated subject both for home users and network supervisors, with complexity and risk factors multiplying over the years. Using a single antivirus app may not be enough anymore. That explains why many users ...


Nearly every PC users need to take screenshots from time to time, whether it is for personal or professional needs. While using the basic Windows screenshot capture method is available, it is not adequate for everyone. When you want to capture ...


Dealing with various types of data efficiently holds the key to success in any computing task. Apart from generating new data and modifying existing files, it becomes necessary to delete existing files at times. While most users resort to using ...

New Downloads

Universal Data Access

Universal Data Access
Components is a library of
components that provides
direct access to multiple
databases from Delphi ...


Automate sets an entirely new
standard for server and
desktop automation. Built on
the experience earned from
delivering ...

Tipard DVD Creator

Tipard DVD Creator can burn
DVD disc with any videos in
etc. formats. Besides, it can
help ...

Active@ ISO Burner

Active@ ISO Burner burns
CD/DVD/Blu-ray ISO images
compatible with the ISO 9660
standard. Automated burning is
also ...


DocuFreezer converts Word,
Excel, PowerPoint, XPS, DWG
and other files to universally
accepted PDF, JPEG, PNG, TIFF,
TXT. ...

Active@ Disk Image

Active@ Disk Image is a PC
disk image software that can
do a backup as well as clone
the full hard drive. A backup
image ...

PDF Data Extractor

PDF Data Extractor can extract
certain text information
within the PDF, This is an
ideal product if you had for
example a ...


ThumbsPlus is a highly
customizable image database /
thumbnails / graphics editor
application that makes it easy
to ...

PresenTense Time Server

High performance Windows time
server supporting NTP and SNTP
protocols. Installation
automatically configures
default ...

Raise Data Recovery

Raise Data Recovery is an
efficient utility with an
intuitive wizard-style
interface for effortless
recovery of data from ...