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British National Corpus (BNC)

British National Corpus (BNC). An introduction to Punjaporn Pojanapunya February 17, 2011. Outline of the talk. What is the BNC? What is Xaira? How to use the BNC for: Language teaching and learning Research. What is the BNC?.

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British National Corpus (BNC)

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  1. British National Corpus(BNC) An introduction to PunjapornPojanapunya February 17, 2011

  2. Outline of the talk • What is the BNC? • What is Xaira? • How to use the BNC for: • Language teaching and learning • Research

  3. What is the BNC? • A 100 million word collection of samples of British English from a wide range of sources (10% spoken, 90% written texts). • Available under licence; latest edition is BNC XML edition (2007)‏

  4. The main uses of the BNC • Reference Book Publishing • Natural language processing • Language Teaching and Learning • Materials design • Classroom reference • Independent learning • Linguistic Research • BNC as source of real language use • BNC as benchmark http://www.natcorp.ox.ac.uk/corpus/index.xml

  5. What is Xaira? • XML Aware Indexing and Retrieval Architecture • A text searching tool • Usable with any XML corpus • Provided free with the BNC XML Edition

  6. Start up Xaira

  7. Open BNC: bnc-xml.xcorpus

  8. Menu bar

  9. File menu Word – the different word forms in the corpus Phrase – the multi-word phrase or single word form Addkey – words with additional keys such as POS codes Pattern – word patterns XML – specific XML start- or end- tags Query builder – a complex query CQL – commands in CQL, the language Xaira uses to represent its queries internally

  10. View menu • How Xaira looks • How the solutions are displayed

  11. Window menu • Manage the windows on the screen Help menu

  12. Search the BNC

  13. Search results • Solutions • No solutions • Too many solutions dialogue box

  14. Too many solutions

  15. Solutions • Page mode/ Line mode • Plain text / XML text • Scope of context • Reference (status bar)

  16. Line mode

  17. ‘It's an interesting idea. <s n="105"><c c5="PUQ">‘</c> <w c5="PNP" hw="it" pos="PRON“>It</w> <w c5="VBZ" hw="be" pos="VERB">‘s</w> <w c5="AT0" hw="an" pos="ART">an</w> <w c5="AJ0" hw="interesting" pos="ADJ">interesting</w> <w c5="NN1" hw="idea" pos="SUBST">idea</w> <c c5="PUN">.</c></s>

  18. Sort

  19. Use the BNC with Xaira Case studies • 1: She’ll (turn/ go) mad!! • 2: Men are handsome/ women are beautiful • Language teaching and learning • Materials design, classroom reference, independent learning • 3: Words in my corpus vs. ‘standard’ use • Research

  20. Case study 1: She’ll (turn/ go) mad!! • Task: • comparing use of “Turn” and “Go” • Turn + adj. vs. Go + adj. • Language point: Semantic prosody • Xaira functions: • Open the BNC • New query – query builder (word query + Addkey) • Sort

  21. Query = Turn AND Go + Adjective

  22. Query = Turn AND Go + Adjective

  23. Query = Turn AND Go + Adjective

  24. Query = Turn AND Go + Adjective

  25. Query = Turn AND Go + Adjective

  26. Query = Turn AND Go + Adjective

  27. Query = Turn AND Go + Adjective

  28. Query = Turn AND Go + Adjective

  29. Query = Turn AND Go + Adjective

  30. Link type: • - Next • Not next • one-way • two-way

  31. Go + adj. (a-z) • Turn + adj. (a-z) 2 keys: • Examples of ‘go’, then ‘turn’ • Adj. (a-z)

  32. Two Three

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