A fully automated clustering method for flow cytometry based on density and nonparametric clustering
A flow cytometry, non-parametric technology, applied in the field of medical data processing and flow cytometry data analysis, can solve the problems of artificial clustering error, unfavorable new cell population discovery and mining, poor clustering ability, etc., to eliminate noise. Interference and non-specific signals, saving automatic grouping time, and fast dimensionality reduction
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[0043] Bone marrow sample from a leukopenic patient, 10-color scheme, according to the present invention figure 1 As shown in the method, obtain the flow FCS or LMD file, read the data, and organize the data of each fluorescence channel combined with FCS (forward scattered light) and SSC (side scattered light) into tabular data, each row represents a cell, and each column Represents the fluorescence signal or physical parameter value of the corresponding channel of the cell, and the TIME column represents the time point when the cell was acquired. The UMAP algorithm is used to quickly reduce the dimension; the actual measurement of 50,000 12-dimensional flow data, the UMAP dimension reduction takes an average of 35.45 seconds. , t-SNE dimensionality reduction takes an average of 173.98 seconds.
[0044] According to the cell population density distribution after dimensionality reduction, the DBSCAN algorithm is used for clustering, and the clustering diagram is as follows fi...
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