Phrase Anaysis

From Saltlux

Phrase analysis means the step of binding the data into the Phrase units after the morphological analysis and tagging.

For example, the sentence of “The post office will hold out discounts and service concessions as incentives” can be bound in 3 different way of Phrase units, and the Phrase analysis procedure can resolve the ambiguity of the analysed results.



Definition of Grammar

 

Grammar Definition

• Parser returns possible various Parsing tree after the Phrase analysis according to grammar definition
• CFG (Context Free Grammar)
• Start Symbol (S) : Sentence
• Non-Terminal (NT) : syntactic constituents
• Terminals (T): lexical entities/words
• Productions ⊆ NT× (NT∪T)+ ≡ grammar rules

 

Example of Grammar

Bottom-up/Top-down Phrase analysis

Back tracking issues



Chart Parsing
The optimum path will be searched in the chart recording method when parsing is possible.



Statistical Phrase Analysis

This is the way of chart recording method that searched the optimum path when parsing is possible.