the dictionary of italian collocations: design and integration in an online learning environment...
TRANSCRIPT
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The Dictionary of Italian Collocations: Design and Integration in an Online
Learning Environment
Stefania Spina
University for Foreigners Perugia, Italia
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The Dictionary of Italian Collocations
Part of APRIL project (“Personalised web environment for language learning”)
NLP resources as a support for the lexical competence of students of Italian within a Virtual Learning Environment (VLE).
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Presentation outline
background and motivation reference corpus methodology dictionary compilation integration within VLE
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Background
Complexity of MWU: different syntactic and semantic profiles prototypical features:
1. semantic (non-)compositionality2. (non-)substitutability of components by semantically similar
words 3. (non-)insertion of external items
continuum rather than definite categories
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Motivation: collocations in SLA
improve learners fluency examples from Italian leaner corpora
preoccupata per l’esame vado a prendere una doccia (Vietnam) Fare la doccia “take a shower”
ho dimenticato la macchina di fotografia (China) Macchina fotografica “camera”
non-native speakers and L2 vocabulary: first single words, then more extended chunks
trend to overuse the creative combination of isolated words Sinclair’s open choice principle
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DICI
collocations require specific pedagogical attention
Dictionary of Italian Collocations (DICI) it is corpus-based; it is a learner-oriented tool: list of the most
common Italian collocations, classified on a frequency basis;
it is also based on statistical methodologies (dispersion in the different textual genres represented in the corpus).
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Reference corpus Perugia corpus: POS-tagged, lemmatized
Textual genres
fiction
non-fiction
web
academic prose
press
language of administration
television programs
spoken texts
TOTAL: 18 million words
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Extraction based on POS sequences Analysis of existing list of collocations:
150 different POS sequences 10 most productive (75%)
ADJ ADV N nudo come un verme "as naked as a worm"
ADJ CONG ADJ bianco e nero "black and white"ADJ N terzo mondo "third world"N ADJ cassa comune "common fund"N CONG N andata e ritorno "back and forth"N N caso limite "borderline case"N PRE N abito da sera "evening dress"V ADJ stare zitto "keep quiet"V ART N fare la doccia "take a shower"V N avere paura "be afraid"
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Experimental methodology: 4 steps1. extraction of candidate collocations from corpus;2. filtering of the candidate collocations: frequency;3. filtering of the candidate collocations: dispersion;4. filtering of the candidate collocations: manual
ADJ CONG ADJN CONG NN NN PRE NV ART NV N
6 POS sequences
fictionpressacademic proseweb
12-million-word sample 4 corpus sections
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Collocations extraction + frequency
IMS Corpus Workbench removing all the candidates with frequency = 1
41643 collocations
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Dispersion
Examples: Aggrottare la fronte “to frown” (fiction) Vincere le elezioni “to win the elections” (press) Dare una definizione “to give a definition”
(academic prose)
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Dispersion
Juilland’s D value (Juilland - Chang-Rodriguez, 1964)
€
D =1 −σ
μ n −1, μ =
1
nxi
i=1
n
∑ , σ =xi − μ( )
2
i=1
n
∑n
.
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Dispertion + frequency D value: combined with frequency = usage
U = FD
Usage value ≥ 2: 2047 candidate collocations
Manual selection. Final result: list of 1553 word combinations = dictionary
entries
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Collocations list
LREC 2010 - Stefania Spina - The Dictionary of Italian Collocations
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Compilation of the Dictionary Lexical database enriched with two kinds of
data: visible to the learner (client output)
definition, examples, part-of-speech, syntactic context of occurrence of collocations
to be processed by other applications (server) internal syntactic configuration for automatic
recognitionCollocation Syntactic configuration
Fare la doccia “take a shower”
[V$fare][ADV]? la|una|NUM [ADJ]? [N$doccia]
Abito da sera “evening dress”
[N$abito] da_sera
Alti e bassi “highs and lows”
alti_e_bassi
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DB integration in the VLE
Virtual Learning Environment: web application specifically devoted to language
learning LELE (Linguistically-Enhanced Learning
Environment) provide language learners with additional NLP
resources, in order to improve their linguistic competence
receptive and productive learning activities concerning the recognition and the active use of collocations
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LELE Features to automatically recognize and highlight multi-
word units in written Italian texts; to show additional linguistic information about
the selected collocations; to generate collocation tests for collocational
competence assessment of second language learners.
…
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LELE scheme
VLE
DB + tagger browser
server client
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Conclusions Next steps:
same methodology to the whole corpus, for all the 10 selected POS sequences
test of LELE system with students: starting january 2011
Further research refine statistical measures assign collocations to different levels of
competence other tools (productive tasks)
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Stefania SpinaE-learning and Language
TechnologiesUniversity for Foreigners Perugia,
Italy
[email protected]://april.unistrapg.it
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References Juilland, A & Chang-Rodriguez, E. (1964).
Frequency Dictionary of Spanish Words. The Hague: Mouton & Co
Meunier, F. & Granger S. (2008). Phraseology in foreign language learning and teaching. Amsterdam: John Benjamins
Nesselhauf, N. (2005). Collocations in a learner corpus. Amsterdam: John Benjamins
Pazos Bretaña, M. & Pamies Bertrán, A. (2008). Combined statistical and grammatical criteria. In S. Granger & F. Meunier (Eds), Phraseology. An interdisciplinary perspective. Amsterdam: John Benjamins, pp. 391-406.
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Backgroud: prototypical features
Tagliare la corda “run away”aprire la porta “open the door”
Camera oscura “dark room”
* Stanza oscura
{fare|porre|rivolgere|formulare} una domanda “ask a question”
Sistema *molto operativo “operating system”
fare una lunga, calda, riposante doccia “take a long, hot, restful shower”
semantic (non)-compositionality
(non)-substitutability
(non)-insertion of external items