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Mastering SciPy

Mastering SciPy

By : Blanco-Silva, Francisco Javier B Silva
3.5 (2)
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Mastering SciPy

Mastering SciPy

3.5 (2)
By: Blanco-Silva, Francisco Javier B Silva

Overview of this book

The SciPy stack is a collection of open source libraries of the powerful scripting language Python, together with its interactive shells. This environment offers a cutting-edge platform for numerical computation, programming, visualization and publishing, and is used by some of the world’s leading mathematicians, scientists, and engineers. It works on any operating system that supports Python and is very easy to install, and completely free of charge! It can effectively transform into a data-processing and system-prototyping environment, directly rivalling MATLAB and Octave. This book goes beyond a mere description of the different built-in functions coded in the libraries from the SciPy stack. It presents you with a solid mathematical and computational background to help you identify the right tools for each problem in scientific computing and visualization. You will gain an insight into the best practices with numerical methods depending on the amount or type of data, properties of the mathematical tools employed, or computer architecture, among other factors. The book kicks off with a concise exploration of the basics of numerical linear algebra and graph theory for the treatment of problems that handle large data sets or matrices. In the subsequent chapters, you will delve into the depths of algorithms in symbolic algebra and numerical analysis to address modeling/simulation of various real-world problems with functions (through interpolation, approximation, or creation of systems of differential equations), and extract their representing features (zeros, extrema, integration or differentiation). Lastly, you will move on to advanced concepts of data analysis, image/signal processing, and computational geometry.
Table of Contents (11 chapters)
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10
Index

Optimization

The optimization problem is best described as the search for a local maximum or minimum value of a scalar-valued function f(x). This search can be performed for all possible input values in the domain of f (and in this case, we refer to this problem as an unconstrained optimization), or for a specific subset of it that is expressible by a finite set of identities and inequalities (and we refer to this other problem as a constrained optimization). In this section, we are going to explore both modalities in several settings.

Unconstrained optimization for univariate functions

We focus on the search for the local minima of a function f(x) in an interval [a, b] (the search for local maxima can then be regarded as the search of the local minima of the function –f(x) in the same interval). For this task, we have the routine minimize_scalar in the module scipy.optimize. It accepts as obligatory input a univariate function f(x), together with a search method.

Most search methods...

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