Feature Extraction - Feature Extraction in Software

Feature Extraction in Software

Many data analysis software packages provide for feature extraction and dimension reduction. Common numerical programming environments such as MATLAB, SciLab, NumPy and the R language provide some of the simpler feature extraction techniques (e.g. principal component analysis) via built-in commands. More specific algorithms are often available as publicly-available scripts or third-party add-ons.

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Epimorph - Chemistry - Production
... The extraction is performed in many steps (one amount of crushed plant is at least six to ten times extracted, so practically every alkaloid goes into the solution) ... From the solution obtained at the last extraction step, the alkaloids are precipitated by either ammonium hydroxide or sodium carbonate ... or mildly acidified water, then proceeding through steps of concentration, extraction, and purification of alkaloids ...

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