https://www.datasciencecentral.com/profiles/blogs/seven-techniques-for-data-dimensionality-reduction

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This article comes from the blog of the website KNIME . Below is a summary. T he highest reduction ratio without performance degradation is obtained by analyzing the decision cuts in many random forests (Random Forests/Ensemble Trees). However, even just counting the number of missing values, measuring the column variance, and measuring the correlation of pairs of columns can lead to a satisfactory reduction rate while keeping performance unaltered with respect to the baseline models. The recent explosion of data set size, in number of records and attributes, has triggered the development of a number of big data platforms as well as parallel data analytics algorithms. At the same time tho... Full story

23 December

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