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Roger Levy

10 accepted papers

2023

Language model acceptability judgements are not always robust to context

ACL 2023long

Targeted syntactic evaluations of language models ask whether models show stable preferences for syntactically acceptable content over minimal-pair unacceptable inputs. Our best syntactic evaluation datasets, however, provide substantially less linguistic context than models receive during pretraini…

2023

Unsupervised Discontinuous Constituency Parsing with Mildly Context-Sensitive Grammars

ACL 2023long

We study grammar induction with mildly context-sensitive grammars for unsupervised discontinuous parsing. Using the probabilistic linear context-free rewriting system (LCFRS) formalism, our approach fixes the rule structure in advance and focuses on parameter learning with maximum likelihood. To red…

2022

Analyzing Wrap-Up Effects through an Information-Theoretic Lens

ACL 2022short

Numerous analyses of reading time (RT) data have been undertaken in the effort to learn more about the internal processes that occur during reading comprehension. However, data measured on words at the end of a sentence–or even clause–is often omitted due to the confounding factors introduced by so-…

Cited by 14SourcePDFScholar
2022

Probing for Incremental Parse States in Autoregressive Language Models

EMNLP 2022finding

Next-word predictions from autoregressive neural language models show remarkable sensitivity to syntax. This work evaluates the extent to which this behavior arises as a result of a learned ability to maintain implicit representations of incremental syntactic structures. We extend work in syntactic…

2022

When Does Syntax Mediate Neural Language Model Performance? Evidence from Dropout Probes

NAACL 2022long

Recent causal probing literature reveals when language models and syntactic probes use similar representations. Such techniques may yield “false negative” causality results: models may use representations of syntax, but probes may have learned to use redundant encodings of the same syntactic informa…

2021

A Targeted Assessment of Incremental Processing in Neural Language Models and Humans

ACL 2021long

We present a targeted, scaled-up comparison of incremental processing in humans and neural language models by collecting by-word reaction time data for sixteen different syntactic test suites across a range of structural phenomena. Human reaction time data comes from a novel online experimental para…

2021

Controlled Evaluation of Grammatical Knowledge in Mandarin Chinese Language Models

EMNLP 2021main

Prior work has shown that structural supervision helps English language models learn generalizations about syntactic phenomena such as subject-verb agreement. However, it remains unclear if such an inductive bias would also improve language models’ ability to learn grammatical dependencies in typolo…

2021

Revisiting the Uniform Information Density Hypothesis

EMNLP 2021main

The uniform information density (UID) hypothesis posits a preference among language users for utterances structured such that information is distributed uniformly across a signal. While its implications on language production have been well explored, the hypothesis potentially makes predictions abou…

2021

Structural Guidance for Transformer Language Models

ACL 2021long

Transformer-based language models pre-trained on large amounts of text data have proven remarkably successful in learning generic transferable linguistic representations. Here we study whether structural guidance leads to more human-like systematic linguistic generalization in Transformer language m…