"presegmentation" meaning in English

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      "expansion": "pre- + segmentation",
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  "etymology_text": "From pre- + segmentation.",
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          "ref": "2015, Gabriele Lohmann, Johannes Stelzer, Verena Zuber, Tilo Buschmann, Daniel Margulies, Andreas Bartels, Klaus Scheffler, “Task-related edge density (TED) - a new method for revealing large-scale network formation in fMRI data of the human brain”, in arXiv:",
          "text": "A major advantage of TED compared to other methods is that it does not depend on any specific hemodynamic response model, and it also does not require a presegmentation of the data for dimensionality reduction as it can handle large networks consisting of tens of thousands of voxels.",
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        "segmentation in advance"
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  "word": "presegmentation"
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  "etymology_text": "From pre- + segmentation.",
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