Studying the Inductive Biases of RNNs with Synthetic Variations of Natural Languages
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Abstract (arXiv)
How do typological properties such as word order and morphological case marking affect the ability of neural sequence models to acquire the syntax of a language? Cross-linguistic comparisons of RNNs' syntactic performance (e.g., on subject-verb agreement prediction) are complicated by the fact that any two languages differ in multiple typological properties, as well as by differences in training corpus. We propose a paradigm that addresses these issues: we create synthetic versions of English, which differ from English in one or more typological parameters, and generate corpora for those languages based on a parsed English corpus. We report a series of experiments in which RNNs were trained to predict agreement features for verbs in each of those synthetic languages. Among other findings, (1) performance was higher in subject-verb-object order (as in English) than in subject-object-verb order (as in Japanese), suggesting that RNNs have a recency bias; (2) predicting agreement with both subject and object (polypersonal agreement) improves over predicting each separately, suggesting that underlying syntactic knowledge transfers across the two tasks; and (3) overt morphological case makes agreement prediction significantly easier, regardless of word order.
Key facts. Cited by 37 papers in the map (data through 13 Oct 2026). First posted on arXiv 15 Mar 2019.
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Citing papers per year: 2021: 10; 2022: 8; 2023: 10; 2024: 3; 2025: 3; 2026: 3.
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- 2021Examining the Inductive Bias of Neural Language Models with Artificial Languages2 Jun 2021
- 2021Calibrate Before Use: Improving Few-Shot Performance of Language Models19 Feb 2021
- 2021Enhancing the Transformer Decoder with Transition-based Syntax29 Jan 2021
- 2021Deep Subjecthood: Higher-Order Grammatical Features in Multilingual BERT26 Jan 2021
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12 most cited of 34 All 34 (JSON)
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- 2026Fine-tuning vs. In-context Learning in Large Language Models: A Formal Language Learning Perspective25 Apr 2026
- 2025Which Word Orders Facilitate Length Generalization in LMs? An Investigation with GCG-Based Artificial Languages14 Oct 2025
- 2025Can Language Models Learn Typologically Implausible Languages?17 Feb 2025
- 2024Cookbook: A framework for improving LLM generative abilities via programmatic data generating templates7 Oct 2024
- 2024Training an NLP Scholar at a Small Liberal Arts College: A Backwards Designed Course Proposal11 Aug 2024
- 2024Probing the Category of Verbal Aspect in Transformer Language Models4 Jun 2024
- 2023Mitigating Biases for Instruction-following Language Models via Bias Neurons Elimination16 Nov 2023
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12 newest of 34 All 34 (JSON)