ResearchBenchmarksGrammar Induction on PTB binarized (test)Grammar Induction on PTB binarized (test)Follow52.4F1 ScoreURNNG39.29642.69846.149.502Apr 7, 2019Evaluation resultsMethodMethodLinksF1 ScoreF1 Score (+PP)URNNG2019.0452.452.4DIORAevaluation_source=Droz...evaluation_source=Drozdov et al. (2019)2019.0449.656.2ON-LSTMevaluation_source=Shen...evaluation_source=Shen et al., 20192019.0449.4—PRPNtuned=truetuned=true2019.044949.9PRPN-LMevaluation_source=Droz...evaluation_source=Drozdov et al. (2019)2019.0442.842.4PRPN-UPevaluation_source=Droz...evaluation_source=Drozdov et al. (2019)2019.0439.845.4