An Interactive Nonlinear Least Squares Program (Classic Reprint) - Hardcover

Wolfe, Claire M.

9780266886198: An Interactive Nonlinear Least Squares Program (Classic Reprint)

Hardcover

ISBN 10: 0266886191 ISBN 13: 9780266886198

Verlag: Forgotten Books, 2019

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Excerpt from An Interactive Nonlinear Least Squares Program

This document is intended both as a tutorial guide for users not familiar with invar and as a reference manual for experienced users. New users should read the first 5 chapters before attempting to use the code.

Chapters 2 and 3 give the necessary information to write the user sup plied subroutines. Chapter 2 deals with writing the model in variable sepa rable form, while Chapter 3 describes the required fortran subroutines in detail.

Chapter 4 gives a brief description of the logic of the invar driver program. It should be read by beginning users before trying to execute the program.

Chapters 5, 9 and 10 give examples of real world modelling problems solved with invar, including output from actual terminal sessions. The problem in Chapter 5 is simpler than the other two. Chapter 9 describes a time-series modelling problem and Chapter 10 describes a problem with two independent variables.

Chapter 6 describes some Cyber 855 Procedures that can be used to execute invar at the National Bureau of Standards and will probably be of interest only to nbs users.

Chapter 7 gives detailed explanations of the prompts and messages that the user will encounter during the execution of invar. Most users should be able to get started with invar after reading Chapter 5, but might want to refer to Chapter 7 for more details on specific points. Many users will probably also refer quite often to Table which summarizes all of the invar command codes.

The statistical diagnostics generated by invar are described in Chapter 8, which is included for users who are not already familiar with the standard least squares diagnostic plots.

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