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Functional and Shape Data Analysis by Anuj Srivastava

By Anuj Srivastava

This textbook for classes on functionality info research and form info research describes how to find, examine, and mathematically symbolize shapes, with a spotlight on statistical modeling and inference. it really is aimed toward graduate scholars in research in facts, engineering, utilized arithmetic, neuroscience, biology, bioinformatics, and different comparable components. The interdisciplinary nature of the huge diversity of principles covered—from introductory conception to algorithmic implementations and a few statistical case studies—is intended to familiarize graduate scholars with an array of instruments which are proper in constructing computational ideas for form and similar analyses. those instruments, gleaned from geometry, algebra, records, and computational technological know-how, are usually scattered throughout varied classes, departments, and disciplines; Functional and form information research offers a unified, complete resolution by way of integrating the registration challenge into form research, higher getting ready graduate scholars for dealing with destiny clinical challenges.

Recently, a data-driven and application-oriented concentrate on form research has been trending. this article bargains a self-contained remedy of this new new release of tools fit research of curves. Its major concentration is form research of services and curves—in one, , and better dimensions—both closed and open. It develops based Riemannian frameworks that supply either quantification of form transformations and registration of curves whilst. also, those equipment are used for statistically summarizing given curve information, acting measurement relief, and modeling saw variability. it is strongly recommended that the reader have a history in calculus, linear algebra, numerical research, and computation.

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This is because curves are formally represented as functions, and spaces of functions are usually infinite © Springer-Verlag New York 2016 A. P. 1007/978-1-4939-4020-2 3 39 40 3 Background: Relevant Tools from Geometry dimensional. To analyze these spaces of functions, we require some tools from functional analysis. Although computer experiments will ultimately involve discretizing these functions into finite sets of points, the basic theory shall be developed assuming continuous, or functional, representations.

22 Symmetry analysis: What is the amount of asymmetry in these shapes? Fig. 23 A system of statistical analysis of shapes in images We will develop a formal approach for analyzing symmetry of objects using deformations; here the objects are deformed until they become symmetric and the amount of deformation measures the level of asymmetry. In summary, our goal is to develop a fully statistical framework in which we can treat shapes of functions and curves as random variables taking values in welldefined shape spaces and governed by underlying probability densities.

This is because curves are formally represented by functions, and spaces of functions are usually infinite dimensional. Although computer experiments will ultimately involve discretization of these functions into finite sets of points, the basic theory shall be developed assuming continuous, or functional, representations. 5 Organization of this Textbook 19 In summary, the nonlinearity and the infinite dimensionality of shapes, and the need for certain invariances, make it difficult to perform shape analysis of curves.

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