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. 2013 Oct 3;15(10):e215. doi: 10.2196/jmir.2514

Table 4.

Classification results for author identification on IVF/FET/IUI Cycle Buddies subforum; 10-fold cross-validation, 30 authors, 100 posts per author.

Features F score Precision Recall
Letters 0.836 0.851 0.822
Characters lowercase 0.887 0.896 0.877
Original capitalization 0.902 0.911 0.894