Cross-lingual entity linking maps an entity mention in a source language to its corresponding entry in a structured knowledge base that is in a different (target) language. While previous work relies heavily on bilingual lexical resources to bridge the gap between the source and the target languages, these resources are scarce or unavailable for many low-resource languages. To address this problem, we investigate zero-shot cross-lingual entity linking, in which we assume no bilingual lexical resources are available in the source low-resource language. Specifically, we propose pivot-based entity linking, which leverages information from a high-resource "pivot" language to train character-level neural entity linking models that are transferred to the source low-resource language in a zero-shot manner. With experiments on 9 low-resource languages and transfer through a total of 54 languages, we show that our proposed pivot-based framework improves entity linking accuracy 17% (absolute) on average over the baseline systems, for the zero-shot scenario. Further, we also investigate the use of language-universal phonological representations which improves average accuracy (absolute) by 36% when transferring between languages that use different scripts.

本研究探讨了零资源语言的跨语言实体链接问题，利用高资源语言建立了基于字级别神经实体链接模型的枢轴式实体链接框架，实现了跨54种语言的零-shot transfer，并在9种低资源语言上进行了实验，相比于基线系统，平均提高了17%的实体链接准确性。同时，文章还探讨了语言通用音韵表示的使用，在不同语言之间转移时将平均准确率提高了36%。

零样本神经网络跨语言实体链接