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PENG Processable ENGlish |
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PENG Processable ENGlish |
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Processing a PENG Specification
The controlled grammar and the lexicon of PENG are implemented with the help a unification-based grammar formalism. An incremental bottom-up chart parser acts as an interface between the grammar and the look-ahead text editor.
During parsing of a PENG specification
- anaphoric references are resolved,
- ellipsis are reconstructed,
- synonyms, acronyms, and abbreviations are replaced,
- a discourse representation structure is constructed,
- presupposed entities are accommodated, and
- a paraphrase is generated that shows how the machine interpreted the input.
The chart parser discovers which syntactic categories can follow the word form that is currently under investigation and feeds this grammatical information to the look-ahead editor.
It is important to keep in mind that parsing of a PENG specification is deterministic; each syntactic surface structure of a sentence contributes to one specific discourse representation structure that can be translated automatically into standard first-order predicate logic.
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© Rolf Schwitter, Macquarie University, Australia
Last modified: 28th February 2007