Empty element recovery by spinal parser operations

نویسندگان

  • Katsuhiko Hayashi
  • Masaaki Nagata
چکیده

This paper presents a spinal parsing algorithm that can jointly detect empty elements. This method achieves state-of-theart performance on English and Japanese empty element recovery problems.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A Simple Pattern-matching Algorithm for Recovering Empty Nodes and their Antecedents

This paper describes a simple patternmatching algorithm for recovering empty nodes and identifying their co-indexed antecedents in phrase structure trees that do not contain this information. The patterns are minimal connected tree fragments containing an empty node and all other nodes co-indexed with it. This paper also proposes an evaluation procedure for empty node recovery procedures which ...

متن کامل

Fully Parsing the Penn Treebank

We present a two stage parser that recovers Penn Treebank style syntactic analyses of new sentences including skeletal syntactic structure, and, for the first time, both function tags and empty categories. The accuracy of the first-stage parser on the standard Parseval metric matches that of the (Collins, 2003) parser on which it is based, despite the data fragmentation caused by the greatly en...

متن کامل

A Clause-Level Hybrid Approach to Chinese Empty Element Recovery

Empty elements (EEs) play a critical role in Chinese syntactic, semantic and discourse analysis. Previous studies employ a language-independent sentence-level approach to EE recovery, by casting it as a linear tagging or structured parsing problem. In comparison, this paper proposes a clauselevel hybrid approach to address specific problems in Chinese EE recovery, which recovers EEs in Chinese ...

متن کامل

Generalized Parser Combinators

Parser combinators are a well-known technique for constructing recursive-descent parsers through composition of other, less-complex parsers. In fact, parser combinators are often held up as an example of the elegance and composability inherent to functional programming. However, like any application of recursive-descent, parser combinators fail to support grammars with left-recursion or most ki...

متن کامل

Trace Prediction and Recovery with Unlexicalized PCFGs and Slash Features

This paper describes a parser which generates parse trees with empty elements in which traces and fillers are co-indexed. The parser is an unlexicalized PCFG parser which is guaranteed to return the most probable parse. The grammar is extracted from a version of the PENN treebank which was automatically annotated with features in the style of Klein and Manning (2003). The annotation includes GP...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2016