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In applied mathematics, topological based data analysis (TDA) is an approach to the analysis of datasets using techniques from topology. Extraction of information from datasets that are high-dimensional, incomplete and noisy is generally challenging. TDA provides a general framework to analyze such data in a manner that is insensitive to the particular metric chosen and provides dimensionality reduction and robustness to noise. Beyond this, it inherits functoriality, a fundamental concept of modern mathematics, from its topological nature, which allows it to adapt to new mathematical tools.

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  • Топологический анализ данных (ru)
  • Topological data analysis (en)
  • Análise topológica de dados (pt)
  • Топологічний аналіз даних (uk)
  • 拓撲數據分析 (zh)
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  • 拓撲數據分析(Topological Data Analysis ;縮寫作TDA),是應用數學當中一門在數據集的分析用上了拓撲學的新技術領域,主要用於數據挖掘和計算機視覺理論研究。要從多維度、不完整和雜訊多的數據集中提取訊息,一般也具有挑戰性的。 拓撲數據分析的主要問題有: * 如何從低維度的表示去獲得高維度的結構; * 如何將離散單位添加到全局結構中。 人腦可以輕易從低維度的私人數據構建整體結構。例如,從每隻眼睛中的平面圖像中獲取物體的三維形狀並不困難。公共結構的創建也通過將時間片段中的離散組合成連續圖像來執行。例如,電視圖像在技術上是個別點的陣列,然而,它們被認為是單個場景。 拓撲數據分析提供了一種總體框架,以對所選擇的特定度量不敏感的方式分析這些數據,並提供降低維數和對噪聲的魯棒性。以下為當中的主要方法: * 根據接近度參數,通過一些單純複合物系列替換一組數據元素,例如:在數據的點雲中尋找出同調竹4部分。 * 通過這些拓撲結構,特別是穩定同源性的新理論。 * 將數據集的穩定同源性轉碼為參數化版本的Betti數字,以下稱為條形碼。 (zh)
  • In applied mathematics, topological based data analysis (TDA) is an approach to the analysis of datasets using techniques from topology. Extraction of information from datasets that are high-dimensional, incomplete and noisy is generally challenging. TDA provides a general framework to analyze such data in a manner that is insensitive to the particular metric chosen and provides dimensionality reduction and robustness to noise. Beyond this, it inherits functoriality, a fundamental concept of modern mathematics, from its topological nature, which allows it to adapt to new mathematical tools. (en)
  • Топологический анализ данных — новая область теоретических исследований для задач анализа данных (Data mining) и компьютерного зрения. Основные вопросы: 1. * Как из низкоразмерных представлений получать структуры высоких размерностей; 2. * Как дискретные единицы складываются в глобальные структуры. Основной метод топологического анализа данных: (ru)
  • Em matemática aplicada, a análise topológica de dados (TDA, na abreviatura do nome em inglês, topological data analysis) é uma abordagem para a análise de conjuntos de dados por meio de técnicas da topologia. A extração de informações de conjuntos de dados de dimensão alta, incompletos e com ruídos é um desafio. A TDA fornece uma estrutura geral para analisar esses dados de maneira insensível à métrica específica escolhida e fornece redução de dimensionalidade e robustez ao ruído. Além disso, ela herda funtorialidade, um conceito fundamental da matemática moderna, de sua natureza topológica, o que lhe permite adaptar-se às novas ferramentas matemáticas. (pt)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/Illustration_of_Typical_Workflow_in_TDA.jpeg
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