dominik lukes - online corpus for literacy teachers - dyslexia guild summer conference 2011
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8/6/2019 Dominik Lukes - Online Corpus for Literacy Teachers - Dyslexia Guild Summer Conference 2011
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Online Corpus
Literacy Teachers¶Best Friend
Dominik Lukehttp://dominiklukes.net
Dyslexia Guild
Summer Conference 2011
8/6/2019 Dominik Lukes - Online Corpus for Literacy Teachers - Dyslexia Guild Summer Conference 2011
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Outline
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What is a corpus
Answering questions with a
corpus
The language of corpussearches
The corpus and the
classroom
Practice
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Corpus / Corpora
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????
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of about
language
knowledge
http://www.flickr.com/photos/missturner/3029700617/
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Prescriptivism
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« how language should be used
Descriptivism
« how language is used
v
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³Most of the prescriptive rules
of the language mavensmake no sense on any level.
They are bits of folklore that
originated for screwball
reasons several hundredyears ago« For as long as
they have existed, speakers
have flouted them«´
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This usage stuff is not straightforward and
easy. If ever someone tells you that the rules
of English grammar are simple and logicaland you should just learn them and obey
them, walk away, because you're getting
advice from a fool.
http://languagelog.ldc.upenn.edu/nll/?p=2790
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Corpus
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Key modern tool for finding out
about how language works«
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Corpus
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« is a large database of representative language
samples «
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Corpus
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« used for linguistic research,making dictionaries, writing
grammars, «
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Corpora available for teachers
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http://corpus.byu.edu
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Access to CO
CA and relatedBYU corpora is free«
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«but free registrationrequired for more than
~10 queries a day
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Brown ± the grandfather
COCA
BNCWebcorp
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8/6/2019 Dominik Lukes - Online Corpus for Literacy Teachers - Dyslexia Guild Summer Conference 2011
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http://www.flickr.com/photos/atoach/3900591006/
Searching a corpus early on in the
process of making a generalization
can save you a lot of unpleasantsurprises later.
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How do we use the word
dyslexia?We speak more often of dyslexic children
than adults.
We speak more often of dyslexia than any
other dys- word.
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ConcordanceBNC:
dyslexic [n*]
COCA:
dyslexic [n*]
http://www.americancorpus.org/
http://corpus.byu.edu/bnc
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COCA:
dys*
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Suffixingrules
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*yed
*ied
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Suffixingrules
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*yed
*ied
played
stayed
portr ayedenjoyed
unemployed
surveyed
died
tr ied
mar r ied
wor r iedidentif ied
applied
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The Corpus Magic
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*[ ]
?
Different corpora use slightly
different codes. Read the
manual.
[n* ]
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The Corpus Magic
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*[ ]
?
Any one character Any number of
characters (incl 0)
Lemma
(all inflectional
forms of a word)
Different corpora use slightly
different codes. Read the
manual.
[n* ]Part of speech tags
(e.g. nouns)
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*each each, reach, beach, teach,
outreach, «, impeach, «
teach* teachers, teaching, «,
teachable, teacher-librarians, «
t*ch touch, teach, tech, torch,
trench, twitch, «, three-inch, «
teach * teach the, teach us, teachstudents, «
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?each reach, beach, teach, peach,
leach, keach, «
each? each- (1), each# (1) [ie nothing]
?each? peachy, bleachy, teacha, reachs
(2) [ie spelling error], «
t?ch tech, tach, toch, tuch, tsch, tich
t??ch touch, teach, torch, tisch, «
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[Lemma]
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Part of speech tags
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[run].[n*]
[run] [n*]
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Common tags
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[n*] noun[NN2] plural nouns
[v*] verb[VVD] verb past tense
[aj*] (BNC) / [j*](COCA) adjective
[av*] (BNC) / [r*](COCA) adverb
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Help
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8/6/2019 Dominik Lukes - Online Corpus for Literacy Teachers - Dyslexia Guild Summer Conference 2011
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8/6/2019 Dominik Lukes - Online Corpus for Literacy Teachers - Dyslexia Guild Summer Conference 2011
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You can also
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cats and dogs search for idioms
?each*s combine wildcards
[=pretty] search for synonymscar|bike|horse search for alternatives
used -car exclude searches
For more details see:
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Concordance + KWIC
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*ies.[N*]
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KWIC ± Key-Word In Context
*ies.[N*]
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Limit searches by genre
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Other questions corpus can
answer Are there more nouns or verbs ending in -ies?
* ies.[V*] vs. *ies.[N*]
Are there four-letter verbs ending in -ed in the present
tense? ??ed.[VVB]
What are the most common adjectives describing students
vs. pupils. [j*] [student] vs. [j*] [pupil]
What do we say teachers do most often?
[teacher] [vvb]
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Corpus, rules, and regularity
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http://www.flickr.com/photos/51505078@N00/352492687
pre*
*ed
*ies.[V*]
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CollocationsLimits on variability
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See also Kennedy, p. 80-23
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Collocations (cont)Limits on variability
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See also Kennedy, p. 80-23
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Collocations (cont)
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[teacher] must [v*]
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Idioms and set phrases
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275 results
359 results
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Google as a Corpus
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"put the search text in quotes"
use * for the search item
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Google as a Corpus
Pros & Cons
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PRO: rare, low frequency usage,
uptodate usage
CON: no sampling, no frequency
sort, no genre limit, no part
of speech tags
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Google results counts are only
rough estimates«
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http://searchengineland.com/why-google-cant-count-results-properly-53559
Different people searching in different geographic locations can get different
numbers
Sometimes searching for A gives fewer results than searching for A without B
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«but Google fights can be fun
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WebCorp is makes Google
search results linguist-friendly
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Avoid Common Corpus Errors
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Be aware of limitations: sampling,
coverage, size, presence of typos
and errors, bad part of speech
tagging
Beware of low frequency results
Beware of homographs
Check results come from multiple
sources
Check KWIC to confirm relevance
Limit search by genre http://www.flickr.com/photos/andreassolberg/433734311
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Check examples and sources
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Always check low frequency
results
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must [v*] [n*]
«sometimes they come from thesame source
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False roots
http://etymonline.com
corner, silly, preface,
cockroach, protest, stable «
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Make your own corpus with
TextSTAT
http://neon.niederlandistik.fu-berlin.de/en/textstat
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Make your own corpus with
AntConc
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http://www.antlab.sci.waseda.ac. jp/software.html
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Corpus in the
classroom
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teacher preparation
student discovery
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Teacher preparation
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find relevant, common examples
prepare worksheets check for exceptions
find out answers to student
questions about rules and usage
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Student discovery
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show search results to students to
work out rules or word meanings teach students how to search for
questions
ask students to give each other puzzles for searching
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For heavy classroom use«
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register for
group accessto prevent
spam lock out
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Corpus v dictionary
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Non-classroom
corpus use
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supplement dictionary
cross-word puzzles
check typical usage
when writing
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Where to go next?
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http://www.corpora4learning.net
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Thank youContact http://dominiklukes.net
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