“New Media and eScience” MSc Programme JSI postgraduate school Winter/Spring Semester, 2004/05. Language Technologies. Lecture I. Introduction to Human L anguage T echnologies. Tomaž Erjavec email@example.com. Introduction to Human L anguage T echnologies.
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“New Media and eScience” MSc ProgrammeJSI postgraduate schoolWinter/Spring Semester, 2004/05
Lecture I.Introduction to Human Language Technologies
A dictionary of linguistics and phonetics, by David Crystal
De Saussure: parole / langue
Chomsky: performance / competence
A consonant becomes devoiced if it starts a word: [C, voiced] [-voiced] / #___#vlak# #flak#
A multi-layer approach:
Noam Chomsky’s Transformational grammar: Syntactic Structures (1957)
Two levels of representation of the structure of sentences:
Deep structure is represented in the form of a heirarchical tree diagram, or"phrase structure tree," depicting the abstract grammatical relationships between the words and phrases within a sentence.
A system of formal rules specifies how deep structures are to be transformed into surface structures.
S → NP V NP
NP → N
NP → Det N
NP → NP that S
Disadvantage of rule-based (deep-knowledge) systems:
The emergence of the Web:
The promise of mobile, ‘invisible’ interfaces;
HLT in the role of middle-ware
Part-of-Speech Tagging and lemmatisation
Natural Language Generation
Lexical Knowledge Acquisition
Sublanguages and Controlled Languages
OntologiesProcesses, methods, and resourcesThe Oxford Handbook of ComputationalLinguistics, Ruslan Mitkov (ed.)