Gender-neutral pronouns are increasingly being introduced across Western languages. Recent evaluations have however demonstrated that English NLP systems are unable to correctly process gender-neutral pronouns, with the risk of erasing and misgendering non-binary individuals. This paper examines a Dutch coreference resolution system's performance on gender-neutral pronouns, specifically hen and die. In Dutch, these pronouns were only introduced in 2016, compared to the longstanding existence of singular they in English. We additionally compare two debiasing techniques for coreference resolution systems in non-binary contexts: Counterfactual Data Augmentation (CDA) and delexicalisation. Moreover, because pronoun performance can be hard to interpret from a general evaluation metric like LEA, we introduce an innovative evaluation metric, the pronoun score, which directly represents the portion of correctly processed pronouns. Our results reveal diminished performance on gender-neutral pronouns compared to gendered counterparts. Nevertheless, although delexicalisation fails to yield improvements, CDA substantially reduces the performance gap between gendered and gender-neutral pronouns. We further show that CDA remains effective in low-resource settings, in which a limited set of debiasing documents is used. This efficacy extends to previously unseen neopronouns, which are currently infrequently used but may gain popularity in the future, underscoring the viability of effective debiasing with minimal resources and low computational costs.

研究探讨荷兰指代消解系统对中性代词（如hen和die）的性能，比较了两种去偏见技术（CDA和delexicalisation）对非二元上下文的指代消解系统的影响，并引入了评估中性代词性能的新度量标准——代词得分。结果显示相较于有性别的对应词，中性代词的性能下降，然而CDA大大缩小了有性别和中性代词之间的性能差距，并且在资源有限的情况下仍然有效，证明了以最少资源和低计算成本实现有效去偏见的可行性。

转换荷兰语：去偏向非二元代词的荷兰语共指消解系统