UHop: An Unrestricted-Hop Relation Extraction Framework for Knowledge-Based Question Answering
Table 7: Distribution of error types under UHop framework (in percentage). H stands for HR-BiLSTM, A for ABWIM, RE for ‘Relation Extraction’, and TD for ‘Termination Decision’. * denotes the +DQ setting.
['Dataset/model', 'Dataset/model', 'Dataset/model', '1-hop RE', '1-hop TD', '2-hop RE', '2-hop TD', '3-hop RE', '3-hop TD']
The interpretability of UHop, i.e., the possibility to analyze each hop, facilitates the analysis of error distributions. We list the percentage of questions for which UHop fails to extract the correct relations by the number of hops for different datasets. Our observations are offered below.