In order to improve questions generated on originality, we explicitly reward our model for having low n-gram score with the passage as compared to the initial draft.
we observe that with Reward-RefNet(Originality), there is an improvement in the performance where the overlap with the passage was less (as shown in blue in Figure 3).As shown in Table 8, although both questions are answerable given the passage, the question generated from Reward-RefNet(Originality) is better.