{"type":"ScholarlyArticle","title":"Parse Tree Fragmentation of Ungrammatical Sentences","authors":[{"name":"Homa B. Hashemi","slug":"homa-b-hashemi","given":"Homa B.","family":"Hashemi","affiliation":""},{"name":"Rebecca Hwa","slug":"rebecca-hwa","given":"Rebecca","family":"Hwa","affiliation":""}],"abstract":"Ungrammatical sentences present challenges for statistical parsers because the well-formed trees they produce may not be appropriate for these sentences. We introduce a framework for reviewing the parses of ungrammatical sentences and extracting the coherent parts whose syntactic analyses make sense. We call this task parse tree fragmentation. In this paper, we propose a training methodology for fragmenting parse trees without using a task-specific annotated corpus. We also propose some fragmentation strategies and compare their performance on an extrinsic task - fluency judgments in two domains: English-as-a-Second Language (ESL) and machine translation (MT). Experimental results show that the proposed fragmentation strategies are competitive with existing methods for making fluency judgments; they also suggest that the overall framework is a promising way to handle syntactically unusual sentences.","doi":null,"url":"https://ijcai.org/proceedings/2016/397","pdf":"https://ijcai.org/proceedings/2016/0397.pdf","markdown":"https://ijcai.org/proceedings/2016/397.md","bibtex":"https://ijcai.org/proceedings/2016/bibtex/397","volume":{"slug":"2016","title":"Proceedings of the Twenty-Fifth International Joint Conference on Artificial Intelligence","short_title":"IJCAI 2016","url":"https://ijcai.org/proceedings/2016/","year":2016,"location":"New York, NY, USA","dates":"9–15 July 2016","editors":"Subbarao Kambhampati","isbn":"978-1-57735-770-4; 978-1-57735-771-1","publisher":"AAAI Press / International Joint Conferences on Artificial Intelligence","doi_prefix":""},"section":null,"track":"","number":397,"pages":{"first":2796,"last":2801},"keywords":[],"videos":[],"references":[],"license_note":"Copyright International Joint Conferences on Artificial Intelligence."}