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Beyond The Concept of Manifolds: Principal Trees, Metro Maps, and Elastic Cubic Complexes
| Content Provider | CiteSeerX |
|---|---|
| Author | Sumner, Neil R. Zinovyev, Andrei Y. Gorban, Alexander N. |
| Abstract | Multidimensional data distributions can have complex topologies and variable local dimensions. To approximate complex data, we propose a new type of low-dimensional “principal object”: a principal cubic complex. This complex is a generalization of linear and non-linear principal manifolds and includes them as a particular case. To construct such an object, we combine a method of topological grammars with the minimization of an elastic energy defined for its embedment into multidimensional data space. The whole complex is presented as a system of nodes and springs and as a product of one-dimensional continua (represented by graphs), and the grammars describe how these continua transform during the process of optimal complex construction. The simplest case of a topological grammar (“add a node”, “bisect an edge”) is equivalent to the construction of “principal trees”, an object useful in many practical applications. We demonstrate how it can be applied to the analysis of bacterial genomes and for visualization of cDNA microarray data using the “metro map” representation. |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | Complex Data Low-dimensional Principal Object Complex Topology Metro Map Representation Metro Map Principal Tree Particular Case Topological Grammar Continuum Transform Non-linear Principal Manifold Cdna Microarray Data Bacterial Genome Optimal Complex Construction Multidimensional Data Distribution Elastic Cubic Complex Many Practical Application Elastic Energy Multidimensional Data Space Principal Cubic Complex One-dimensional Continuum Whole Complex Variable Local Dimension |
| Content Type | Text |
