Improving Low-Resource Cross-lingual Document Retrieval by Reranking with Deep Bilingual Representations

Autor:	Zhang, Rui, Westerfield, Caitlin, Shim, Sungrok, Bingham, Garrett, Fabbri, Alexander, Verma, Neha, Hu, William, Radev, Dragomir
Rok vydání:	2019
Předmět:	Computer Science - Computation and Language
Druh dokumentu:	Working Paper
Popis:	In this paper, we propose to boost low-resource cross-lingual document retrieval performance with deep bilingual query-document representations. We match queries and documents in both source and target languages with four components, each of which is implemented as a term interaction-based deep neural network with cross-lingual word embeddings as input. By including query likelihood scores as extra features, our model effectively learns to rerank the retrieved documents by using a small number of relevance labels for low-resource language pairs. Due to the shared cross-lingual word embedding space, the model can also be directly applied to another language pair without any training label. Experimental results on the MATERIAL dataset show that our model outperforms the competitive translation-based baselines on English-Swahili, English-Tagalog, and English-Somali cross-lingual information retrieval tasks. Comment: ACL 2019, short paper
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1906.03492 Zobrazit plný text záznamu View this record from Arxiv