Analyzing the Effect of Linguistic Similarity on Cross-Lingual Transfer: Tasks and Experimental Setups Matter
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Abstract (arXiv)
Cross-lingual transfer is a popular approach to increase the amount of training data for NLP tasks in a low-resource context. However, the best strategy to decide which cross-lingual data to include is unclear. Prior research often focuses on a small set of languages from a few language families and/or a single task. It is still an open question how these findings extend to a wider variety of languages and tasks. In this work, we analyze cross-lingual transfer for 263 languages from a wide variety of language families. Moreover, we include three popular NLP tasks: POS tagging, dependency parsing, and topic classification. Our findings indicate that the effect of linguistic similarity on transfer performance depends on a range of factors: the NLP task, the (mono- or multilingual) input representations, and the definition of linguistic similarity.
Key facts. Cited by 10 papers in the map (data through 7 Oct 2026). Builds on 23 of its 57 references that are in the map. First posted on arXiv 24 Jan 2025.
Builds on
23 of 57 references.
References · 23
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11 more
- 2022A Balanced Data Approach for Evaluating Cross-Lingual Transfer: Mapping the Linguistic Blood Bankcited by 29
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Citing papers per year: 2025: 4; 2026: 6.
10 papers.
- 2026The Roots of Performance Disparity in Multilingual Language Models: Intrinsic Modeling Difficulty or Design Choices?cited by 10
- 2025Modality Matching Matters: Calibrating Language Distances for Cross-Lingual Transfer in URIEL+cited by 3
- 2025Simple Additions, Substantial Gains: Expanding Scripts, Languages, and Lineage Coverage in URIEL+cited by 2
- 2026Multilingual Unlearning in LLMs: Transfer, Dynamics, and Reversibilitycited by 2
- 2025CultureMERT: Continual Pre-Training for Cross-Cultural Music Representation Learningcited by 1
- 2026Quantifying Cross-Lingual Transfer in Paralinguistic Speech Taskscited by 1
- 2025Multilingual BERT language model for medical tasks: Evaluation on domain-specific adaptation and cross-lingualitycited by 0
- 2026Dialects of Translationese Shape Language Model Learningcited by 0
- 2026Self-Supervised Lexical Representation Learning for Fast, Large-Scale Phylogenetic Inferencecited by 0
- 2026Language Distances are Practical for Equitable Cross-Lingual Transfercited by 0
- 2026Language Distances are Practical for Equitable Cross-Lingual Transfer26 Sep 2026
- 2026Self-Supervised Lexical Representation Learning for Fast, Large-Scale Phylogenetic Inference4 Sep 2026
- 2026Multilingual Unlearning in LLMs: Transfer, Dynamics, and Reversibility2 Jun 2026
- 2026Quantifying Cross-Lingual Transfer in Paralinguistic Speech Tasks9 Mar 2026
- 2026Dialects of Translationese Shape Language Model Learning18 Feb 2026
- 2026The Roots of Performance Disparity in Multilingual Language Models: Intrinsic Modeling Difficulty or Design Choices?12 Jan 2026
- 2025Multilingual BERT language model for medical tasks: Evaluation on domain-specific adaptation and cross-linguality31 Oct 2025
- 2025Simple Additions, Substantial Gains: Expanding Scripts, Languages, and Lineage Coverage in URIEL+31 Oct 2025
- 2025Modality Matching Matters: Calibrating Language Distances for Cross-Lingual Transfer in URIEL+22 Oct 2025
- 2025CultureMERT: Continual Pre-Training for Cross-Cultural Music Representation Learning21 Jun 2025