How To Obtain Powerful Parsers That Are Elegant and Practical

How To Obtain Powerful Parsers

Parsing Schemata for Practical Text Analysis

is thesis presents several contributions oriented towards the common goal of bridging the gap between Sikkel’s theory of parsing schemata and the practical aspects of natural language parser development. On the practical side, a compiler is presented that can be used to automatically generate an e›cient implementation of a parser from its formal description in the form of a parsing schema. is s...

تعیین حجم نمونه در داده های دوتایی برای دو گروه مستقل در مطالعات پزشکی

Backgound and Objectives: Nowadats, it is very common to investigate the effect of a new method or medicine by using a comparison between two independent groups in many clinical studies, but unfortunately the sample size part has not been done based on scientific formulas but on practical issues in some researches of this type of cinical studies, and this makes some unreliable results. Therefor...

Packrat Parsing: a Practical Linear-Time Algorithm with Backtracking

Packrat parsing is a novel and practical method for implementing linear-time parsers for grammars defined in Top-Down Parsing Language (TDPL). While TDPL was originally created as a formal model for top-down parsers with backtracking capability, this thesis extends TDPL into a powerful general-purpose notation for describing language syntax, providing a compelling alternative to traditional con...

Two Practical Rhetorical Structure Theory Parsers

We describe the design, development, and API for two discourse parsers for Rhetorical Structure Theory. The two parsers use the same underlying framework, but one uses features that rely on dependency syntax, produced by a fast shift-reduce parser, whereas the other uses a richer feature space, including both constituentand dependency-syntax and coreference information, produced by the Stanford...