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Table 2 Example of text features frequencies dataset structure, for reviews 4, 5 and 6

From: Survey of review spam detection using machine learning techniques

Review the hotel rooms were so great comfort we had a time at this service is bad stay
Review4 1 1 1 2 2 1 1 0 0 0 0 0 0 0 0 0 0
Review5 0 1 0 0 0 1 0 1 1 1 1 1 1 0 0 0 1
Review6 1 0 1 0 0 0 0 0 0 0 0 0 0 1 1 2 0