CHILDES Introduction

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CHILDES SYSTEM OVERVIEW - BASIC -

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Photo source: http://www.sxc.hu/photo/740583 ; royal free under usage option What is CHILDES? 1.

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System Exchange Child Data Language

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Photo source: http://www.sxc.hu/photo/740583 ; royal free under usage option CHIld Language Data Exchange System

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Photo source: http://www.sxc.hu/photo/740583 ; royal free under usage option Why we need CHILDES? 2.

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You want to study what I say You want to investigate languages Because….. (Photo source: http://www.flickr.com/photos/klapow/203398273/)

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CHILDES provides Tools for studying conversational interactions

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Photo source: http://www.sxc.hu/photo/740583 ; royal free under usage option Who started CHILDES? 3.

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Department of Psychology, Carnegie Mellon University Found in 1984 Concord MA

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The team Director Brian MacWhinney Contact macw@cmu.edu Programmers Leonid Spektor Franklin Chen

members: 

members 4,500

corpora: 

corpora 130

published articles: 

published articles 1,500

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Photo source: http://www.sxc.hu/photo/740583 ; royal free under usage option Why we need a lot of data with CHILDES? 4.

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We needs LOTS of DATA. WHY? Universals and Differences Photo source: http://www.flickr.com/photos/alvy/69385239/ Photo source: http://www.flickr.com/photos/alvy/69385239/

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Photo source: http://www.sxc.hu/photo/740583 ; royal free under usage option Where is CHILDES? 5.

http://childes.psy.cmu.edu: 

http://childes.psy.cmu.edu visit CHILDES website at

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Photo source: http://www.sxc.hu/photo/740583 ; royal free under usage option How can I get the latest info of CHILDES? 6.

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Subscribe to the CHILDES Mailing Lists now!

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Photo source: http://www.sxc.hu/photo/740583 ; royal free under usage option What are the tools provided by CHILDES? 7.

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Transcript database Programs for transcript analysis Methods for linguistic coding Systems for audio and video linking The CHILDES system provides tools for studying conversational interactions, including

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Photo source: http://www.sxc.hu/photo/740583 ; royal free under usage option What related software do I need? 8.

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BEFORE installing, you should have To read the media files To view the Manual To unzip the corpus To display the characters

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Download unicode fonts - STEP ONE

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Download unicode fonts - STEP TWO

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Download unicode fonts - STEP THREE

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Photo source: http://www.sxc.hu/photo/740583 ; royal free under usage option Where is the CHILDES program? 9.

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The program available at CHILDES is called CLAN

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Download CLAN

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4 versions are available  versions  No longer supported

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Photo source: http://www.sxc.hu/photo/740583 ; royal free under usage option I want to install CLAN to my Windows. HOW ? 9.

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Getting Started @ Windows (Photo Source : http://www.flickr.com/photos/tanaka/49602421)

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After Download (Photo Source : http://www.flickr.com/photos/tanaka/49602421)

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Photo source: http://www.sxc.hu/photo/740583 ; royal free under usage option I have CLAN now. What should I do? 10.

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Download the Manual for details

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Photo source: http://www.sxc.hu/photo/740583 ; royal free under usage option I just want to study the available language database. How? 11.

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TWO ways to view the data

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Local Transcripts

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e.g. Download YipMatthews bilingual corpus

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(Photo Source : http://www.flickr.com/photos/tanaka/49602421) Unzip the corpus files

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(Photo Source : http://www.flickr.com/photos/tanaka/49602421) Unzip the corpus files

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This is a transcript in CHAT format (*.cha file)

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Zoom inside a transcript

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Download the Manual for more

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Photo source: http://www.sxc.hu/photo/740583 ; royal free under usage option How can I read transcripts together with audio & video files? 12.

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(Photo Source : http://www.flickr.com/photos/tanaka/49602421) Playback with audio file

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(Photo Source : http://www.flickr.com/photos/tanaka/49602421) Playback with video file

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Photo source: http://www.sxc.hu/photo/740583 ; royal free under usage option I want to search words/ language structure from various corpus for research. HOW? 13.

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Command window

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Basic structure of the Commands freq +t*CHI 0042.cha mlu +t*MOT 0042.cha Tier(s) (started with +t )

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Photo source: http://www.sxc.hu/photo/740583 ; royal free under usage option Can you introduce me some useful COMMANDS? 14.

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stands for Mean Length Utterance A. MLU The ratio of morphemes over utterances

mlu +t*CHI *.cha : 

mlu +t*CHI *.cha 2. TYPE 1. Click “WORKING” Locate the files/folder here by clicking SELECT DIRECTORY 3. Click “RUN”

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stands for Frequency B. FREQ Count numbers of words used in selected files + Calculate the type– token ratio (a measure of lexical diversity)

freq +t*CHI (filename).cha: 

freq +t*CHI (filename).cha 2. TYPE 1. Click “WORKING” Locate the files/folder here by clicking SELECT DIRECTORY 3. Click “RUN”

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is for Keyword and Line searching C. Kwal Search data for user-specified words + Output those keywords in context.

kwal +t*CHI +t%mor +s”but” (filename).cha: 

kwal +t*CHI +t%mor +s”but” (filename).cha 2. TYPE 1. Click “WORKING”. Locate the files/folder here by clicking SELECT DIRECTORY 3. Click “RUN”

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is used for Combination search D. Combo A powerful program that searches the data for specified combinations of words or character strings.

combo +t*CHI +s”what^is” (filename).cha: 

combo +t*CHI +s”what^is” (filename).cha 2. TYPE 1. Click “WORKING” Locate the files/folder here by clicking SELECT DIRECTORY 3. Click “RUN”

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For more information on commands details

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Photo source: http://www.sxc.hu/photo/740583 ; royal free under usage option WOW! Can I create a language corpus for my own kids with CHILDES? 15.

http://childes.psy.cmu.edu: 

YES!!! http://childes.psy.cmu.edu

This is the Work Flow: 

Sound / Video data CHILD/INFORMANT record transcribe TEXT link This is the Work Flow RUN CHECK @ CLAN CLAN sound+video+transcript  corpus “Esc-L”

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Photo source: http://www.sxc.hu/photo/740583 ; royal free under usage option What about the details? e.g. how to record data, digitalize the sounds & video? 16.

http://childes.psy.cmu.edu: 

Visit http://childes.psy.cmu.edu CHILDES SYSTEM OVERVIEW - ADVANCE - Coming soon!

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This introduction was produced by Uta Lam using materials derived from the CHILDES website AND the Bilingual Child Language Corpus contributed to CHILDES by Virginia Yip (Chinese University of Hong Kong) and Stephen Matthews (University of Hong Kong). Special Thanks to Brian MacWhinney, Virginia Yip, Stephen Matthews Contact me at utalam@gmail.com April 2007 I disclaim any responsibility in regards with photos, contents displayed and links provided by this slides. At time of review, they were deemed valuable either for this slides or content. Upon your visit – this slide or its content may have changed or be unavailable.