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- W2079401632 abstract "Principal manifolds serve as useful tool for many practical applications. These manifolds are defined as lines or surfaces passing through the middle of data distribution. We propose an algorithm for fast construction of grid approximations of principal manifolds with given topology. It is based on analogy of principal manifold and elastic membrane. The first advantage of this method is a form of the functional to be minimized which becomes quadratic at the step of the vertices position refinement. This makes the algorithm very effective, especially for parallel implementations. Another advantage is that the same algorithmic kernel is applied to construct principal manifolds of different dimensions and topologies. We demonstrate how flexibility of the approach allows numerous adaptive strategies like principal graph constructing, etc. The algorithm is implemented as a C++ package elmap and as a part of stand-alone data visualization tool VidaExpert, available on the web. We describe the approach and provide several examples of its application with speed performance characteristics." @default.
- W2079401632 created "2016-06-24" @default.
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- W2079401632 date "2005-05-18" @default.
- W2079401632 modified "2023-09-25" @default.
- W2079401632 title "Elastic Principal Graphs and Manifolds and their Practical Applications" @default.
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- W2079401632 doi "https://doi.org/10.1007/s00607-005-0122-6" @default.
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