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-/*! \mainpage The C++ library
- * \tableofcontents
- * \image html "Gudhi_banner.png" "" width=20cm
- *
- * \section Introduction Introduction
- * The GUDHI library (Geometry Understanding in Higher Dimensions) is a generic open source
- * <a class="el" target="_blank" href="http://gudhi.gforge.inria.fr/doc/latest/">C++ library</a> for
- * Computational Topology and Topological Data Analysis
- * (<a class="el" target="_blank" href="https://en.wikipedia.org/wiki/Topological_data_analysis">TDA</a>).
- * The GUDHI library intends to help the development of new algorithmic solutions in TDA and their transfer to
- * applications. It provides robust, efficient, flexible and easy to use implementations of state-of-the-art
- * algorithms and data structures.
- *
- * The current release of the GUDHI library includes:
- *
- * \li Data structures to represent, construct and manipulate simplicial complexes.
- * \li Simplification of simplicial complexes by edge contraction.
- * \li Algorithms to compute persistent homology and bottleneck distance.
- *
- * All data-structures are generic and several of their aspects can be parameterized via template classes.
- * We refer to \cite gudhilibrary_ICMS14 for a detailed description of the design of the library.
- *
- \section DataStructures Data structures
- \subsection AlphaComplexDataStructure Alpha complex
- \image html "alpha_complex_representation.png" "Alpha complex representation"
-<table border="0">
- <tr>
- <td width="25%">
- <b>Author:</b> Vincent Rouvreau<br>
- <b>Introduced in:</b> GUDHI 1.3.0<br>
- <b>Copyright:</b> GPL v3<br>
- <b>Requires:</b> \ref cgal &ge; 4.7.0 and \ref eigen3
- </td>
- <td width="75%">
- Alpha_complex is a simplicial complex constructed from the finite cells of a Delaunay Triangulation.<br>
- The filtration value of each simplex is computed as the square of the circumradius of the simplex if the
- circumsphere is empty (the simplex is then said to be Gabriel), and as the minimum of the filtration
- values of the codimension 1 cofaces that make it not Gabriel otherwise.
- All simplices that have a filtration value strictly greater than a given alpha squared value are not inserted into
- the complex.<br>
- <b>User manual:</b> \ref alpha_complex - <b>Reference manual:</b> Gudhi::alpha_complex::Alpha_complex
- </td>
- </tr>
-</table>
- \subsection CechComplexDataStructure Čech complex
- \image html "cech_complex_representation.png" "Čech complex representation"
-<table border="0">
- <tr>
- <td width="25%">
- <b>Author:</b> Vincent Rouvreau<br>
- <b>Introduced in:</b> GUDHI 2.2.0<br>
- <b>Copyright:</b> GPL v3<br>
- </td>
- <td width="75%">
- The Čech complex is a simplicial complex constructed from a proximity graph.<br>
- The set of all simplices is filtered by the radius of their minimal enclosing ball.<br>
- <b>User manual:</b> \ref cech_complex - <b>Reference manual:</b> Gudhi::cech_complex::Cech_complex
- </td>
- </tr>
-</table>
- \subsection CubicalComplexDataStructure Cubical complex
- \image html "Cubical_complex_representation.png" "Cubical complex representation"
-<table border="0">
- <tr>
- <td width="25%">
- <b>Author:</b> Pawel Dlotko<br>
- <b>Introduced in:</b> GUDHI 1.3.0<br>
- <b>Copyright:</b> GPL v3<br>
- </td>
- <td width="75%">
- The cubical complex is an example of a structured complex useful in computational mathematics (specially
- rigorous numerics) and image analysis.<br>
- <b>User manual:</b> \ref cubical_complex - <b>Reference manual:</b> Gudhi::cubical_complex::Bitmap_cubical_complex
- </td>
- </tr>
-</table>
- \subsection RipsComplexDataStructure Rips complex
- \image html "rips_complex_representation.png" "Rips complex representation"
-<table border="0">
- <tr>
- <td width="25%">
- <b>Author:</b> Cl&eacute;ment Maria, Pawel Dlotko, Vincent Rouvreau, Marc Glisse<br>
- <b>Introduced in:</b> GUDHI 2.0.0<br>
- <b>Copyright:</b> GPL v3<br>
- </td>
- <td width="75%">
- Rips_complex is a simplicial complex constructed from a one skeleton graph.<br>
- The filtration value of each edge is computed from a user-given distance function and is inserted until a
- user-given threshold value.<br>
- This complex can be built from a point cloud and a distance function, or from a distance matrix.<br>
- <b>User manual:</b> \ref rips_complex - <b>Reference manual:</b> Gudhi::rips_complex::Rips_complex
- </td>
- </tr>
-</table>
- \subsection SimplexTreeDataStructure Simplex tree
- \image html "Simplex_tree_representation.png" "Simplex tree representation"
-<table border="0">
- <tr>
- <td width="25%">
- <b>Author:</b> Cl&eacute;ment Maria<br>
- <b>Introduced in:</b> GUDHI 1.0.0<br>
- <b>Copyright:</b> GPL v3<br>
- </td>
- <td width="75%">
- The simplex tree is an efficient and flexible
- data structure for representing general (filtered) simplicial complexes. The data structure
- is described in \cite boissonnatmariasimplextreealgorithmica .<br>
- <b>User manual:</b> \ref simplex_tree - <b>Reference manual:</b> Gudhi::Simplex_tree
- </td>
- </tr>
-</table>
- \subsection CoverComplexDataStructure Cover Complexes
- \image html "gicvisu.jpg" "Graph Induced Complex of a point cloud."
-<table border="0">
- <tr>
- <td width="25%">
- <b>Author:</b> Mathieu Carri&egrave;re<br>
- <b>Introduced in:</b> GUDHI 2.1.0<br>
- <b>Copyright:</b> GPL v3<br>
- <b>Requires:</b> \ref cgal &ge; 4.8.1
- </td>
- <td width="75%">
- Nerves and Graph Induced Complexes are cover complexes, i.e. simplicial complexes that provably contain
- topological information about the input data. They can be computed with a cover of the
- data, that comes i.e. from the preimage of a family of intervals covering the image
- of a scalar-valued function defined on the data. <br>
- <b>User manual:</b> \ref cover_complex - <b>Reference manual:</b> Gudhi::cover_complex::Cover_complex
- </td>
- </tr>
-</table>
- \subsection SkeletonBlockerDataStructure Skeleton blocker
- \image html "ds_representation.png" "Skeleton blocker representation"
-<table border="0">
- <tr>
- <td width="25%">
- <b>Author:</b> David Salinas<br>
- <b>Introduced in:</b> GUDHI 1.1.0<br>
- <b>Copyright:</b> GPL v3<br>
- </td>
- <td width="75%">
- The Skeleton-Blocker data-structure proposes a light encoding for simplicial complexes by storing only an *implicit*
- representation of its simplices \cite socg_blockers_2011,\cite blockers2012. Intuitively, it just stores the
- 1-skeleton of a simplicial complex with a graph and the set of its "missing faces" that is very small in practice.
- This data-structure handles all simplicial complexes operations such as simplex enumeration or simplex removal but
- operations that are particularly efficient are operations that do not require simplex enumeration such as edge
- iteration, link computation or simplex contraction.<br>
- <b>User manual:</b> \ref skbl - <b>Reference manual:</b> Gudhi::skeleton_blocker::Skeleton_blocker_complex
- </td>
- </tr>
-</table>
- \subsection TangentialComplexDataStructure Tangential complex
- \image html "tc_examples.png" "Tangential complex representation"
-<table border="0">
- <tr>
- <td width="25%">
- <b>Author:</b> Cl&eacute;ment Jamin<br>
- <b>Introduced in:</b> GUDHI 2.0.0<br>
- <b>Copyright:</b> GPL v3<br>
- <b>Requires:</b> \ref cgal &ge; 4.8.1 and \ref eigen3
- </td>
- <td width="75%">
- A Tangential Delaunay complex is a <a target="_blank" href="https://en.wikipedia.org/wiki/Simplicial_complex">simplicial complex</a>
- designed to reconstruct a \f$ k \f$-dimensional manifold embedded in \f$ d \f$-dimensional Euclidean space.
- The input is a point sample coming from an unknown manifold.
- The running time depends only linearly on the extrinsic dimension \f$ d \f$
- and exponentially on the intrinsic dimension \f$ k \f$.<br>
- <b>User manual:</b> \ref tangential_complex - <b>Reference manual:</b> Gudhi::tangential_complex::Tangential_complex
- </td>
- </tr>
-</table>
- \subsection WitnessComplexDataStructure Witness complex
- \image html "Witness_complex_representation.png" "Witness complex representation"
-<table border="0">
- <tr>
- <td width="25%">
- <b>Author:</b> Siargey Kachanovich<br>
- <b>Introduced in:</b> GUDHI 1.3.0<br>
- <b>Copyright:</b> GPL v3<br>
- <b>Euclidean version requires:</b> \ref cgal &ge; 4.6.0 and \ref eigen3
- </td>
- <td width="75%">
- Witness complex \f$ Wit(W,L) \f$ is a simplicial complex defined on two sets of points in \f$\mathbb{R}^D\f$.
- The data structure is described in \cite boissonnatmariasimplextreealgorithmica .<br>
- <b>User manual:</b> \ref witness_complex - <b>Reference manual:</b> Gudhi::witness_complex::SimplicialComplexForWitness
- </td>
- </tr>
-</table>
-
- \section Toolbox Toolbox
-
- \subsection BottleneckDistanceToolbox Bottleneck distance
- \image html "perturb_pd.png" "Bottleneck distance is the length of the longest edge"
-<table border="0">
- <tr>
- <td width="25%">
- <b>Author:</b> Fran&ccedil;ois Godi<br>
- <b>Introduced in:</b> GUDHI 2.0.0<br>
- <b>Copyright:</b> GPL v3<br>
- <b>Requires:</b> \ref cgal &ge; 4.8.1
- </td>
- <td width="75%">
- Bottleneck distance measures the similarity between two persistence diagrams.
- It's the shortest distance b for which there exists a perfect matching between
- the points of the two diagrams (+ all the diagonal points) such that
- any couple of matched points are at distance at most b.
- <br>
- <b>User manual:</b> \ref bottleneck_distance
- </td>
- </tr>
-</table>
- \subsection ContractionToolbox Contraction
- \image html "sphere_contraction_representation.png" "Sphere contraction example"
-<table border="0">
- <tr>
- <td width="25%">
- <b>Author:</b> David Salinas<br>
- <b>Introduced in:</b> GUDHI 1.1.0<br>
- <b>Copyright:</b> GPL v3<br>
- </td>
- <td width="75%">
- The purpose of this package is to offer a user-friendly interface for edge contraction simplification of huge
- simplicial complexes. It uses the \ref skbl data-structure whose size remains small during simplification of most
- used geometrical complexes of topological data analysis such as the Rips or the Delaunay complexes. In practice,
- the size of this data-structure is even much lower than the total number of simplices.<br>
- <b>User manual:</b> \ref contr
- </td>
- </tr>
-</table>
- \subsection PersistentCohomologyToolbox Persistent Cohomology
- \image html "3DTorus_poch.png" "Rips Persistent Cohomology on a 3D Torus"
-<table border="0">
- <tr>
- <td width="25%">
- <b>Author:</b> Cl&eacute;ment Maria<br>
- <b>Introduced in:</b> GUDHI 1.0.0<br>
- <b>Copyright:</b> GPL v3<br>
- </td>
- <td width="75%">
- The theory of homology consists in attaching to a topological space a sequence of (homology) groups, capturing
- global topological features like connected components, holes, cavities, etc. Persistent homology studies the
- evolution -- birth, life and death -- of these features when the topological space is changing. Consequently, the
- theory is essentially composed of three elements: topological spaces, their homology groups and an evolution
- scheme.
- Computation of persistent cohomology using the algorithm of \cite DBLP:journals/dcg/SilvaMV11 and
- \cite DBLP:journals/corr/abs-1208-5018 and the Compressed Annotation Matrix implementation of
- \cite DBLP:conf/esa/BoissonnatDM13 .<br>
- <b>User manual:</b> \ref persistent_cohomology - <b>Reference manual:</b> Gudhi::persistent_cohomology::Persistent_cohomology
- </td>
- </tr>
-</table>
- \subsection PersistenceRepresentationsToolbox Persistence representations
- \image html "average_landscape.png" "Persistence representations"
-<table border="0">
- <tr>
- <td width="25%">
- <b>Author:</b> Pawel Dlotko<br>
- <b>Introduced in:</b> GUDHI 2.1.0<br>
- <b>Copyright:</b> GPL v3<br>
- </td>
- <td width="75%">
- It contains implementation of various representations of persistence diagrams; diagrams themselves, persistence
- landscapes (rigorous and grid version), persistence heath maps, vectors and others. It implements basic
- functionalities which are neccessary to use persistence in statistics and machine learning.<br>
- <b>User manual:</b> \ref Persistence_representations
- </td>
- </tr>
-</table>
-
-*/