Learner corpus research plenary #cl2015

Learner corpus research: a fast-growing interdisciplinary field

Sylviane Granger

IMG_20150722_100646

 

LCR IS an interdisciplinary research

Design: learner and taks variables to control

Not only English language

Method: CIA (Granger, 1996) and computer-aided error analysis

Wider spectrum of linguistic analysis

Interpretation: focus on transfer but this is changing; growing integration of SLA theory

Applications: few up-and-running resources but great potential

Version 3 (2016 or 2017) around 30 L1s as opposed to 11 L1s in Version 1

Learner corpora is a powerful heuristic resource

Corpus techniques make it possible to uncover new dimensions of learner language and lead to the formulation of new research questions: the L2 phrasicon (word combinations).

Prof. Granger brings up Leech’s preface to Learner English on Computer (1998)

Gradual change from mute corpora to sound aligned corpora

POS tagging has improved so much

Error-tagging: wide range of error tagging systems: multi-layer annotation systems

Parsing of learner data (90% accuracy Geertzen et al. 2014)

Static learner corpora vs monito corpora

CMC learner corpus (Marchand 2015)

Granger (2009) paper on the learner research field:

Granger, Sylviane. “The contribution of learner corpora to second language acquisition and foreign language teaching.” Corpora and language teaching 33 (2009): 13.

 

CIA V2 Granger (2015): a new model

SLA researchers are more interested in corpus data and corpus linguists are more familiar with SLA grounding

Implications are much more numerous than applications

Links with NLP: spell and gramar checking, learner feedback, native language id, etc.

Multiple perspectives on the same resource: richer insights and more powerful tools

Phraseology

Louvain English for Academic Purposes Dictionary (LEAD)

web-based

corpus based

descriptions of cross-disciplinary academic vocabulary

1200 lexical times around 18 functions (contrast, illustrate, quote, refer, etc.)

A really exciting application

 

 

 

 

 

 

 

 

MA of L2 learner English

Corpus Linguistics 2015, University of Lancaster, 21-24 July

IMG_20150722_083955

Yu Yuan:
“Exploring the variation in world Learner Englishes: A multidimensional analysis of L2 written corpora”

109 features included in the analysis

RQ:

Can Biber’s model be extended?

How do features co-occur in learner English?

 

Data

ICLE 1.0 (Granger, 2002)

SWEECL 2.0 (Wen & Wang, 2008)

 

Tools

MA tagger Nini (2014) Manual here. Software (Windows) here.

Stanford Corenlp

R

Pythin scripts

 

Method

Kaisser’s criteria + Scree test for Factor Analysis

 

Results

10 dimensions stand out

Dimensions are largely epistemological, rhetorical and syntactical.

 

1.6 billion word Hansard Corpus available

 

Through the corpora list & Prof. Mark Davies

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We are pleased to announce the release of the 1.6 billion word Hansard Corpus . The corpus is part of the SAMUELS project and has been funded by the AHRC (UK).

The Hansard Corpus contains 1.6 billion words from 7.6 million speeches in the British Parliament from 1803-2005. The corpus is semantically tagged, which allows for powerful meaning-based searches. In addition, users can create “virtual corpora” by speaker, time period, House of Parliament, and party in power, and compare across these corpora.

As with all of the other BYU corpora, the corpus allows queries by part of speech, lemma, synonym, customized word lists, and by section of the corpus (e.g. which words or phrases appear in one time period much more than in another). In terms of visualization, it allows users to view frequency listings (matching words and phrases), chart displays (overall frequency by time period), collocates (including comparisons between collocates of contrasting node words), and re-sortable concordance lines.

The end result is a corpus that will be of value not only to linguists (as the largest structured corpus of historical British English from the 1800s-1900s), but hopefully to historians, political scientists, and others as well.

http://www.hansard-corpus.org

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Mark Davies
Professor of Linguistics / Brigham Young University
http://davies-linguistics.byu.edu/

European Journal of Applied Linguistics invites submissions

The European Journal of Applied Linguistics (EuJAL) focuses on the particular concerns of applied linguistics in European contexts, both by addressing problems that are typically relevant for the linguistic situation in Europe, from those on the level of the EU as a pan-national body down to the level of the individual, and by examining topics broached by or discussed in European applied linguistics in particular. In addition to resulting from an epistemological stance, EuJAL is a logical outcome of the regionalization policy of the Association Internationale de Linguistique Appliquée (AILA), supporting the societies’ commitment to regionalization by focusing on the European language space and by giving applied linguists from this regional context an adequate forum. EuJAL is part of the joint activities of the European AILA affiliates.

Extended Java WordNet Library Updated

Through the Linkedin computational linguistics group

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extJWNL (Extended Java WordNet Library) is a Java API for creating, reading and updating dictionaries in WordNet format. The library features support for:

* browsing, creating, editing and writing dictionaries
* encodings, including UTF-8
* Java generics
* huge dictionaries
* instance dictionaries and static singletone dictionary
* Maven
* ewn: command-line tool to browse, create and edit dictionaries in WordNet format
* thread-safety
* and more

# About Current Release

The 1.9 release contains these improvements:

– IO rewritten to use block reads
– synchronization removed or replaced with finer-grained blocks
– parsing rewritten to decrease memory reallocations
– memory use decreased for ASCII resource dictionaries: char[] -> byte[]
– reading speed improved: resource random walk ~2.7x, file random walk ~43.8x, file iteration ~11.9x
– upgrade to Java 7
– bugs fixed

# Acknowledgements

This release is supported by YourKit Open Source License and
[YourKit Java Profiler](https://www.yourkit.com/java/profiler/index.jsp)

# Resources

* [Homepage](http://extjwnl.sourceforge.net/)
* [Download](http://sourceforge.net/projects/extjwnl/files)
* [Documentation](https://github.com/extjwnl/extjwnl/wiki)
* [Mailing Lists](http://lists.sourceforge.net/lists/listinfo/extjwnl-announce)
* [Forums](http://sourceforge.net/projects/extjwnl/forums/)
* [Source Code](https://github.com/extjwnl/extjwnl/)
* [Issues](https://github.com/extjwnl/extjwnl/issues)