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Tips and Tricks … with INTEX/NOOJ
Tamás VáradiInstitute for Linguistics ResearchHungarian Academy of Sciences
Max SilberzteinUniversity of Franche-Comte
Outline● Why INTEX/NOOJ should be a tool of choice?● raising language awareness● studying linguistics
– lexical analysis● morphology
– paradigms– word formation
● automatic lexical acquisition– syntax
● local grammars– semantic tagging
List of useful features
● instant lexical lookup● linguistically sophisticated lexicon● intuitive graphical interface● fast, robust, finite-state technology
● corpus, lecxicon, grammar handled uniformly● instant confirmation from corpus● can be used at different levels of competence
● simple corpus query tool● grammar development environment● research tool for NLP projects
Morphology I - Inflection
paradigms handled in the form of fst’s
Morphology I - Inflection
stem variants processed with operations on strings
L = move left erasing character
Morphology II derivation
● All the formsderived fromthe root ‘fran-’
● Ideal to learnand experimentwith morphologicalsegmentation
Automatic lexical extraction
Store any sequence of letters, which is
followed by –ize or –ify in variable $Root
Produce the lexical entry:wordform: $Root+$Suf,lemma:$Rootpart of speech:Vsynsem:+V
Lexical constraints
check if the string stored in $Root is in the lexicon
as an A, with feature +Nation
Produce the lexical entry:wordform: $Root+$Suf,lemma:$Rootpart of speech:Vsynsem:+V
Syntax
● grammars defined in graphs relying on info stored in the lexicon (minimally lemma and POS)
Instant feedback from corpus
Labelled bracketing
● hit strings may be tagged (merge mode)● [NP a soft, slow step NP]
● or replaced with bracketing● [NP NP]
Disambiguation
● Very – Adjective or Adverbs
Recursion – embedded graphs
An exercise in semantic tagging
● Expressions of time
An exercise in semantic tagging
● Expressions of time
Finally, not for the faint hearted …
● the big picture
Conclusions● Teaching linguistic analysis by doing it● INTEX/NooJ is [det THE] technology to use
honestly…
All welcome to have a go at it
Thank you for your attention!
