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. 2018 Jan 26;13(1):e0190926. doi: 10.1371/journal.pone.0190926

Fig 1. Overall system architecture.

Fig 1

We implemented both the one-stage and the two-stage method. (a) Data generation part. (b) One-stage method. Five-class type classifier for the one-stage method. (c) Two-stage method. The DDI detection classifier distinguishes positive DDI instances from negative instances. The DDI type classifier receives the predicted positive instances from the detection classifier as a testing set.