ResearchBenchmarksLinguistic Minimal Pair Classification on BLiMP coordinate_structure_constraint_complex_left_branchFollow62.4AccuracyTargeted39.83245.69151.5557.409Apr 20, 2026Evaluation ResultsMethodMethodLinksAccuracyDelta (Δ)only_npi_scopeexistential_there_quantifiers_2wh_vs_that_with_gap_long_distancematrix_question_npi_licensor_presentprinciple_A_reconstructionsentential_subject_islandleft_branch_island_echo_questionCSC Complex Left Branchprinciple_A_c_commandTargetedData Intervention Stra...Data Intervention Strategy=specific synthetic, Synthetic Data Percentage=1%2026.0462.415.9———————62.4—BaselinePre-training Corpus=10...Pre-training Corpus=100M FineWeb2026.0446.5————————46.5—RandomData Intervention Stra...Data Intervention Strategy=random synthetic, Synthetic Data Percentage=1%2026.0440.7————————40.7—