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Paraphrase Generation from Latent Variable PCFGs for Semantic Parsing

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Figure

Figure 1: An example word lattice for the question What language do people in Czech Republic speak? using thelexical and phrasal rules from the PPDB.
Figure 2: Trees used for bi-layered L-PCFG training. The questionssyntactic label and two identifiers, e.g., for WP-7-254, WP is the syntactic label assigned by the BLLIP parser, 7 is the what day is nochebuena, when is nochebuenaand when is nochebuena cele
Figure 3: Ungrounded graphs for an input question and its paraphrases along with its correct grounded graph
Table 1: Oracle statistics and results on the WebQues-tions development set.

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