CHOLAN: A Modular Approach for Neural Entity Linking on Wikipedia and Wikidata
This addresses entity linking for knowledge bases like Wikipedia and Wikidata, with incremental improvements by integrating external contexts not used in prior methods.
The paper tackles entity linking by proposing CHOLAN, a modular pipeline with two transformer models that outperforms state-of-the-art approaches on standard datasets like CoNLL-AIDA, MSNBC, AQUAINT, ACE2004, and T-REx.
In this paper, we propose CHOLAN, a modular approach to target end-to-end entity linking (EL) over knowledge bases. CHOLAN consists of a pipeline of two transformer-based models integrated sequentially to accomplish the EL task. The first transformer model identifies surface forms (entity mentions) in a given text. For each mention, a second transformer model is employed to classify the target entity among a predefined candidates list. The latter transformer is fed by an enriched context captured from the sentence (i.e. local context), and entity description gained from Wikipedia. Such external contexts have not been used in the state of the art EL approaches. Our empirical study was conducted on two well-known knowledge bases (i.e., Wikidata and Wikipedia). The empirical results suggest that CHOLAN outperforms state-of-the-art approaches on standard datasets such as CoNLL-AIDA, MSNBC, AQUAINT, ACE2004, and T-REx.