FLAX Utilizing lexical data from a webderived corpus

FLAX Utilizing lexical data from a web-derived corpus to expand productive collocation knowledge Shaoqun Wu and Ian H. Witten Computer Science Department Waikato University New Zealand http: //flax. nzdl. org

FLAX 500 M word sequences Utilizing lexical data from a web-derived corpus One trillion to expand words productive collocation knowledge Shaoqun Wu and Ian H. Witten Computer Science Department Waikato University New Zealand http: //flax. nzdl. org strong tea vs powerful computer heavy rain vs big storm

FLAX a fancy and good position important events in their times reinforce the income help common people the essay favour the influence created by in the other hand play an important role on the argument may be true are aware of a lot more likely to be preserve contemporary arts building contemporary art gallery a unique position events of that time increase the income help ordinary people I favour the influence exerted by on the other hand play an important role in the argument may be valid are fully aware of more likely to be preserved

agenda v Trillion word corpus § § § 1 B 5 -grams 500 M 5 -word phrases 30 M collocations v Searchable digital library collections § § Web phrases Web collocations v Examples of usage v Evaluation with § § students teachers

where’s NZ?

what’s FLAX?

FLAX One trillion words One billion 5 -grams

FLAX One billion 5 -grams 150, 000 -word vocab BNC 500 M five-word sequences Web phrases 2 - 3 - 4 - 5 -grams Web collocations Classified by part of speech 30 M collocations

FLAX Web collocations

FLAX Web collocations

FLAX Web phrases demo … play an important role on … … is equal important to … … contain range of …

FLAX Web collocations demo cause + Noun You are very beautiful … spend the tour

FLAX Evaluation v v v v v IELTS writing task 9 students Samples of written text Teacher identified 108 errors … … and marked them 90% were correctible by the system Of these, students actually corrected 70% 100% of verb + preposition errors 60% of verb + noun errors

FLAX a fancy and good position important events in their times reinforce the income help common people the essay favour the influence created by in the other hand play an important role on the argument may be true are aware of a lot more likely to be preserve contemporary arts building contemporary art gallery a unique position events of that time increase the income help ordinary people I favour the influence exerted by on the other hand play an important role in the argument may be valid are fully aware of more likely to be preserved

Summary v Trillion word corpus § § § 1 B 5 -grams 500 M 5 -word phrases 30 M collocations v Searchable digital library collections § § Web phrases Web collocations v Examples of usage v Evaluation with § § students teachers

FLAX this afternoon … FLAX workshop: 14: 30 Building language material and creating exercises with FLAX http: //flax. nzdl. org