Morphology - jhu-intro-hlt.github.io
Transcript of Morphology - jhu-intro-hlt.github.io
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Morphology
David Yarowsky
9/8/2020
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Acknowledgements and thanks to:• Chris Quirk
• Marta Costa-jussa
• Richard DeArmond
• Eleni Miltsakaki
• Antske Fokkens
• Penny Eckert
• Ivan Sag
• Eleni Miltsakaki
• Adam Szczegielniak
• Jeff Conn
• Dan Jurafsky
• Jason Eisner
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(and factored language models)
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Morphological Analysis
morphemes or semantic featuresdogs => dog+s or dog+PLwalking => walk+ing or walk+PRS;PTCP
running => runn+ing? run+ing & n->nn (gemination)
dancing => danc+ing?dance+ing & e->NULL (elision)
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Morphological Generation
morphemes or semantic featuresdog+s => dogs or dog+PL => dogswalk+ing => walking or walk+PRS;PTCP => walking
run+ing => running or run+PRS;PTCP => runnning& n->nn (gemination)
dance+ing => dancing or dance+PRS;PTCP => dancing& e->NULL (elision)
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Inflectional Morphologymorphemes or semantic features
dogs => dog+s or dog+PLwalking => walk+ing or walk+PRS;PTCP
VERB +PRS;3SG +PRS;PTCP +PST;PFV +PST;PTCP(+s) (+ing) (+ed) (+en/+ed)
walk walks walking walked walkedeat eats eating ate eaten
employer => employ+er or employ+V:N(AGT)employment => employ+ment or employ+V:N(RESACT)
employable => un+[employ+able] (not able to be employed)
[un+employ]+able (able to be not employed)
inflectional paradigm:
<= canonical affixes
<= regular grammatical feature extension of same core word meaning
(“I am walking” and “I walked” differ only by tense)
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Inflectional Morphologymorphemes or semantic features
dogs => dog+s or dog+PLwalking => walk+ing or walk+PRS;PTCP
VERB +PRS;3SG +PRS;PTCP +PST;PFV +PST;PTCP(+s) (+ing) (+ed) (+en/+ed)
walk walks walking walked walkedeat eats eating ate eaten
employer => employ+er or employ+V:N(Agent)employment => employ+ment or employ+V:N(Result/ActOf)
employable => un+[employ+able] (not able to be employed)
[un+employ]+able (able to be not employed?)
Derivational Morphology (new concept formation)
inflectional paradigm:
<= canonical affixes
<= is “to unemploy” a verb?
<= regular grammatical feature extension of same core word meaning
(“I am walking” and “I walked” differ only by tense)
“employ” = An ACTION (verb)“employer” = A PERSON (noun)
a “dogfight” is not a “dog”
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Morphological Segmentation
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Morphological Parse
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<= Infixation of “freakin” morpheme
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Morphology for Machine Translation
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Morphology at JHU
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Collaborators:
Faculty: David Yarowsky, Philipp Koehn, Matt Post, Kevin Duh, Jason Eisner
Senior Researchers/Postdocs:Christo Kirov, Garrett Nicolai, Oliver Adams, John Sylak-Glassman
PhD Students:Winston Wu, Arya McCarthy, Ryan Cotterell, Aaron Mueller, Huda Khayrallah, Patrick Xia
Masters/Undergraduates:
Nidhi Vyas, John Hewitt, Roger Que, James Scharf
Dylan Lewis, Lawrence Wolf-Sarkin, ++
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➢ Currently available supervised data (e.g. Wiktionary)
➢ Elicited paradigms (professional translators, Mturk)
➢ Seed data from grammars, ITG, linguistic universals
➢ Bilingual projection (e.g. from aligned Bibles)
➢ Monolingual contextual/distributional statistics
Multi-Source/Multi-Stage Morphology Learning:
Multi-Source
Offline Machine
Learning
Complete Learned Paradigms
Human Vetting/Improvement
Run-time Executables
and importable
hash tables
>> DO THIS FOR 300-1600 WORLD LANGUAGES!
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GitHub distribution of Trained MorphologicalAnalyzers AND generators for 903+ languages!
(will soon be 1100+)
Handling of finer granularity distinctions:
Analysis:
hablaron -> hablar,PST,[3,PL] (perfective)
hablaban -> hablar,PST,[3,PL] (imperfective)
Generation:
hablar,PST,3,PL -> hablaron, hablaban, …
(including probabilities)
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UniMorph Feature Schema (dimensions of meaning)
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Example UniMorph uses in Information Extraction:
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Projection of POS tags and Dependency Parses(English semantic roles identify target cases;
nsubj dependencies give Person/Number)
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Example Unimorph Output:Tables of English phrasal translations of inflected forms
SpInf SpRoot Unimorph Vector English Template English phrasal inflection
comía comer V;IPFV;PST;1;SG I was VBG I was eating
comías comer V;IPFV;PST;2;SG;INFM you were VBG you were eating
comías comer V;IPFV;PST;2;SG;FORM you were VBG you were eatingcomía comer V;IPFV;PST;3;SG he/she/it was VBG he/she/it was eating
comíamos comer V;IPFV;PST;1;PL we were VBG we were eatingcomíais comer V;IPFV;PST;2;PL;INFM you all were VBG you all were eating
comíais comer V;IPFV;PST;2;PL you all were VBG you all were eating
comían comer V;IPFV;PST;3;PL they were VBG they were eatinghablaba hablar V;IPFV;PST;1;SG I was VBG I was speaking
hablabas hablar V;IPFV;PST;2;SG;INFM you were VBG you were speakinghablabas hablar V;IPFV;PST;2;SG;FORM you were VBG you were speaking
hablaba hablar V;IPFV;PST;3;SG he/she/it was VBG he/she/it was speakinghablábamos hablar V;IPFV;PST;1;PL we were VBG we were speakinghablais hablar V;IPFV;PST;2;PL;INFM you all were VBG you all were speaking
hablais hablar V;IPFV;PST;2;PL you all were VBG you all were speakinghablaban hablar V;IPFV;PST;3;PL they were VBG they were speaking
INPUT OUTPUT
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GitHub distribution of Trained MorphologicalAnalyzers AND generators for 903+ languages!
(will soon be 1100+)
Diverse detailed inflectional morphology
Nouns: sg/pl and case(nom/acc/dat/gen/loc/other)
Verbs: tense(pst/prs/fut) +person/number(1SG,1PL,2..)
Adjectives: person/number/case/gender in progress
Analysis mode:python analyze.py -i Inflected-Zapotec.txt -a Zapotec.analyses -l zap -d Zapotec-lemma-list
Generation mode:python analyze.py -i Zapotec-lemma-list -g -a Zapotec.generation -l zap -d Zapotec-corpus-words
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UniMorph (example of currently released languages)
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UniMorph Languages (continued)
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UniMorph Languages (continued – page #3)
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Example Unimorph Output:Tables of English phrasal translations of inflected forms
SpInf SpRoot Unimorph Vector English Template English phrasal inflection
comía comer V;IPFV;PST;1;SG I was VBG I was eating
comías comer V;IPFV;PST;2;SG;INFM you were VBG you were eating
comías comer V;IPFV;PST;2;SG;FORM you were VBG you were eatingcomía comer V;IPFV;PST;3;SG he/she/it was VBG he/she/it was eating
comíamos comer V;IPFV;PST;1;PL we were VBG we were eatingcomíais comer V;IPFV;PST;2;PL;INFM you all were VBG you all were eating
comíais comer V;IPFV;PST;2;PL you all were VBG you all were eating
comían comer V;IPFV;PST;3;PL they were VBG they were eatinghablaba hablar V;IPFV;PST;1;SG I was VBG I was speaking
hablabas hablar V;IPFV;PST;2;SG;INFM you were VBG you were speakinghablabas hablar V;IPFV;PST;2;SG;FORM you were VBG you were speaking
hablaba hablar V;IPFV;PST;3;SG he/she/it was VBG he/she/it was speakinghablábamos hablar V;IPFV;PST;1;PL we were VBG we were speakinghablais hablar V;IPFV;PST;2;PL;INFM you all were VBG you all were speaking
hablais hablar V;IPFV;PST;2;PL you all were VBG you all were speakinghablaban hablar V;IPFV;PST;3;PL they were VBG they were speaking
INPUT OUTPUT
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UniMorph Gloss Use for Machine Translation
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Derivational Morphology
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Derivational Morphology – Universalized SemanticsJ:J(ATT) -ish
J:J(DIM) -ito
J:J(NEG) in-
J:J(NEG) un-
J:N(STATEQUALOF) -acity
J:N(STATEQUALOF) -ance
J:N(STATEQUALOF) -ancy
J:N(STATEQUALOF) -cy
J:N(STATEQUALOF) -dom
J:N(STATEQUALOF) -ence
J:N(STATEQUALOF) -ency
J:N(STATEQUALOF) -ern
J:N(STATEQUALOF) -ity
J:N(STATEQUALOF) -ness
J:N(STATEQUALOF) -ocity
J:N(STATEQUALOF) -sion
J:N(STATEQUALOF) -th
J:N(STATEQUALOF) -ty
J:R(INMANNER) -ily
J:R(INMANNER) -ly
J:V(CAUSETOBE) -ate
J:V(CAUSETOBE) -en
J:V(CAUSETOBE) -ify
J:V(CAUSETOBE) -ize
N:J(CHARBY) -some
N:J(FULLOF) -ful
N:J(FULLOF) -ious
N:J(FULLOF) -ous
N:J(HAVING) -ate
N:J(HAVING) -uous
N:J(LIKEA) -esque
N:J(LIKEA) -ish
N:J(LIKEA) -like
N:J(LIKEA) -oid
N:J(LIKEA) -ous
N:J(MADEOF) -y
N:J(QUALOF) -y
N:J(REALTEDTO) -ar
N:J(RELATEDTO) -al
N:J(RELATEDTO) -ual
N:J(RELATEDTO) -an
N:J(RELATEDTO) -ary
N:J(RELATEDTO) -ery
N:J(RELATEDTO) -ry
N:J(RELATEDTO) -ese
N:J(RELATEDTO) -etic
N:J(RELATEDTO) -atic
N:J(RELATEDTO) -ial
N:J(RELATEDTO) -ian
N:J(RELATEDTO) -ian
N:J(RELATEDTO) -ic
N:J(RELATEDTO) -ical
N:J(RELATEDTO) -ular
N:J(WITHOUT) -less
N:R(RELATEDTO) -ally
N:N(AUG-LARGE) mega-
N:N(AUG-SUPERIOR) over-
N:N(AUG-SUPERIOR) super-
N:N(DIM-INFERIOR) -ling
N:N(DIM-SMALL) -ette
N:N(DIM-SMALL) -ie
N:N(DIM-SMALL) -let
N:N(DIM-SMALL) -et
N:N(DIM-SMALL) -y
N:N(DOEROF) -ist
N:N(FEM) -ess
N:N(FEM) -ling
N:N(SMALLINSTANCEOF) -let
N:N(SMALLINSTANCEOF) -et
N:N(MATERIAL) -ing
N:N(REALMOF) -dom
N:N(ORIGIN) -ite
N:N(QUALITYOF) -ism
N:N(STATEQUALOF) -dom
N:N(STATEQUALOF) -hood
N:N(STATEQUALOF) -ship
N:N(WORKER-WITH) -man
N:N(WORKER-WITH) -boy
N:N(WORKER-WITH) -ier
N:N(WORKER-WITH) -eer
N:N(WORKER-WITH) -arian
N:N(RELATEDTO) -ory
N:R(INDIRECTIONOF) -ward
N:R(INDIRECTIONOF) -wise
N:V(CAUSETOHAVE) -ate
N:V(CAUSETOHAVE) -en
N:V(CAUSETOHAVE) -fy
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Paradigms for Derivational MorphologyConcept Lemma(V) V:N(AGT) V:N(PAT) V:N(RES;ACTOF) V:J(ABIL)
EMPLOY employ employer employee employment employable
GIVE give giver recipient gift; giving givable
TRANSPORT transport transporter transportee transportation transportable
INTESTIGATE investigate investigator investigated/N investigation investigable
Concept Lemma(V) V:N(AGT) V:N(PAT) V:N(RES;ACTOF) V:J(ABIL)
EMPLOY emplear empleador empleado empleo empleable
GIVE dar dador receptor don;dar;regalo dable
TRANSPORT transportar transportista transportado transporte transportable
INTESTIGATE investigar investigador investigado investigación investigable
Spanish:
Concept Lemma(V) V:N(AGT) V:N(PAT) V:N(RES;ACTOF) V:J(ABIL)
EMPLOY нанимать наниматель работник работа трудоспособный
GIVE давать даритель данный дарение доступный
TRANSPORT транспортировать транспортер транспортируемый транспорт транспортабельный
INTESTIGATE исследовать исследователь исследуемый исследование …
Russian:
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Derivational Morphology
Learning Process:
V V:N(AGT)
ENGLISH: employ employer
SPANISH: emplear empleador
Via dictionary
ar:ador
(or learned from other pairs)
0:er
(learned or in database)
MT GOAL
Analysis Goal
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Questions?