Error analysis for anaphora resolution in Russian: new challenging issues for anaphora resolution task in a morphologically rich language
نویسندگان
چکیده
This paper presents a quantitative and qualitative error analysis of Russian anaphora resolvers which participated in the RU-EVAL event. Its aim is to identify and characterize a set of challenging errors common to stateof-the-art systems dealing with Russian. We examined three types of pronouns: 3rd person pronouns, reflexive and relative pronouns. The investigation has shown that a high level of grammatical ambiguity, specific features of reflexive pronouns, free word order and special cases of non-referential pronouns in Russian impact the quality of anaphora resolution systems. Error analysis reveals some specific features of anaphora resolution for morphologically rich and free word order languages with a lack of gold standard resources.
منابع مشابه
Exploiting Syntactic Patterns as Clues in Zero-Anaphora Resolution
We approach the zero-anaphora resolution problem by decomposing it into intra-sentential and inter-sentential zeroanaphora resolution. For the former problem, syntactic patterns of the appearance of zero-pronouns and their antecedents are useful clues. Taking Japanese as a target language, we empirically demonstrate that incorporating rich syntactic pattern features in a state-of-the-art learni...
متن کاملZAC: Zero Anaphora Corpus A Corpus for Zero Anaphora Resolution in Portuguese
This paper describes a corpus of Brazilian Portuguese texts built in view of the construction of an Anaphora Resolution system, which is part of a fully-fledged Natural Language Processing system (STRING). The ZAC corpus is aimed at the resolution of the so-called zero-anaphora, that is, an anaphora relation where the anaphoric expression (or anaphor) has been zeroed The paper briefly discusses...
متن کاملIntroduction to the Special Issue on Computational Anaphora Resolution
Anaphora accounts for cohesion in texts and is a phenomenon under active study in formal and computational linguistics alike. The correct interpretation of anaphora is vital for natural language processing (NLP). For example, anaphora resolution is a key task in natural language interfaces, machine translation, text summarization, information extraction, question answering, and a number of othe...
متن کاملPronominal Anaphora Resolution for Unrestricted Text
The paper presents an anaphora resolution algorithm for unrestricted text. In particular, we examine portability of a knowledge-based approach of (Mitamura et al., 2002), proposed for a domain-specific task. We obtain up to 70% accuracy on unrestricted text, which is a significant improvement (almost 20%) over a baseline we set for general text. As the overall results leave much room for improv...
متن کاملAcquisition of English anaphora by Iranian EFL learners
The present study examined the acquisition of anaphora in English by Iranian EFL learners as well as Persian speaking children. To do so, the study was conducted in three phases. In the first phase, 40 intermediate female and male EFL learners were selected from Puyan Institute in Takestan, Iran. Then, an off-line based Grammatical Judgment Task was administered. In the second phase, 40 female ...
متن کامل