Atle Grønn University of Oslo Language, Games & Evolution ... · 5 ˘ ˇ ˆ˙ ˝˛ ˚ A...
Transcript of Atle Grønn University of Oslo Language, Games & Evolution ... · 5 ˘ ˇ ˆ˙ ˝˛ ˚ A...
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Atle GrønnUniversity of Oslo
Language, Games & EvolutionESSLLI 2007
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� Partial blocking in Bidirectional OT (and GT)
� A diachronic view on Russian aspect� A ”diachronic” explanation of aspectual
competition and implicatures in thesynchronic system
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� ”kill” (f1) > ”cause to die” (f2)� direct killing (m1) > indirect killing (m2)
(1) Black Bart caused the sheriff to die.
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� Graphicalrepresentation(Dekker & van Rooy)
� <f1,m1> is (weakly) optimal
� <f2,m2> is weaklyoptimal
�←•f2
↑↑
•←�f1
m2m1
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A form-meaning pair <F,M> is weakly optimal iff� 1. <F,M> is a member of GEN.� 2. there is no pair <F’,M> in GEN such that (2.1) <F’,M> > <F,M> and (2.2) <F’,M> is weakly optimal.� 3. there is no pair <F,M’> in GEN such that (3.1) <F,M’> > <F,M> and (3.2) <F,M’> is weakly optimal.
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Every Russian verb form is� Perfective (Pf) or� Imperfective (Ipf)
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� markedness� competition� underspecification� context sensitivity� pragmatic implicatures
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� Truth-conditional approaches to Russianaspect fail because they don’t consideralternative forms which the speaker could have used.
� The competition perspective suggests an OT/GT analysis.
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� The perfective (”complete eventinterpretation”): e C t
[[Pf]] = �P�t�e[P(e) ∧ eCt]
� The progressive imperfective(”incomplete event interpretation”): t C e
[[Ipf_prog]] = �P�t�e[P(e) ∧ tCe]
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(2) Kogda my vstretilis’,when we met_PAST.PFon chital "Vojnu i Mir".he read_PAST.IPF “War and Peace”
“When we met, he was reading “W&P”.”� i.e. the time of our meeting is temporally
included in an event of him reading W&P
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(3) Ja chital "Vojnu i Mir" v šestom klasse,I read_PAST.IPF “W&P” in sixth gradeprochital polnost’ju za 6 dnej. (internet)read_PAST.PF completely in 6 days
“I read “W&P” in the 6th grade, read it through in 6 days.”
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� The perfective prochital in (3):the event of reading W&P is temporallyincluded in an interval of 6 days: e C t� The imperfective in (3):the event of reading W&P is temporallyincluded in an interval of 1 year: e C t
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� Many synchronic semantic and syntacticfacts can be analyzed from an evolutionary perspective as frozenpragmatics (Blutner 2006).
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� atelic activities � chitat’ (to read)
� progressive accomplishments(incomplete events) � chitat’ pis’mo (to read the letter)
� non-progressive accomplishments(complete events) � prochitat’ pis’mo (to ”through-read” the letter)
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Was prochitat’ pis’mo (”through-read” the letter)originally compatible with an incomplete eventinterpretation?
(4) Als ich den Brief durchlas, den meineFreundin Katja für ihre Tochter Anna schrieb, musste ich weinen. (google)“As I was reading the letter (lit.: `the letter through-read'), which my friend Katjahad written to her daughter, I had to cry”
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� f1 = (in)transitive simplex V� f2 = prep + V� m1 = incomplete events� m2 = complete events� GEN = M X F� Rankings: f1 > f2 (complexity);
m1 > m2 (stereotypical)
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�←•Prep + V (f2)
↑↑
•←�Simplex V (f1)
Completeevent (m2)
Incompleteevent (m1)
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� Given a situation corresponding to m1, the preferred form of S will be f1, hence the alternative <f2,m1> is blocked.
� Given the input form f1, H will choose the interpretation m1, hence the alternative <f1,m2> is also blocked.
� The pair <Ipf,m1> is considered optimal from both perspectives.
� Remove the pairs which are blocked.� The only remaining pair <f2,m2>, itself not
being blocked, is weakly optimal.
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� At stage 1, the 1-1 mapping between intransitive simplex verbs and atelic activities is the external factor which triggers f1 to be associated with incomplete events (progressivity, the subinterval property etc.).
� Through associative learning, the pair <f1,m1> gets strengthened at stage 2.
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� If the speaker then, at stage 3, wants to emphasize the complete event interpretation, he should choose the marked form f2.
� At stage 4, this invites a strengthening of the pair <f2,m2>.
� Finally, at stage 5, prefixation develops into perfectivization, giving rise to a new aspectual system.
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� Pragmatics � frozen pragmatics �semantics
� GEN = M X F – {<Pf, tCe>}� Secondary imperfectivization (16th
century): chitat‘_IPF (f1) >prochitat‘_PF (f2) > prochityvat‘_IPF (f3)
� Complexity of form does not produce a linear ranking of Pf and Ipf!
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� Not obvious that the new system can be modeled as a game
� A 2x2 game with three solutions, preserving ambiguity, cannot be modeled in terms of bidirectional optimization (two-solutions games)…
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� What are the rankings in modernRussian?
� How and when does the complete eventreading of Ipf survive?
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�”beef”
↑
Hindus arenot allowedto eat cow
←�”cow”
cow-meat animal
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Basic idea: � Aspect is a temporal phenomenon� Global reasoning – without compositionality
� Class 1: Small reference time� Class 2: Big reference time� Class 3: No reference time
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Example: f1 = Ipf+past+punctual_temporal_adverbialf2 = Pf+past+punctual_temporal_adverbial
m1 = tCe ∧ Tadv(t)m2 = eCt ∧ t = the interval preceding Tadv
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(2’) Kogda my vstretilis’,when we met_PAST.PFon ?? "Vojnu i Mir".he ?? “War and Peace”
� chital_IPF (”was reading/had read”) or� prochital_Pf (”had read”)?
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� Ranking on F (harmony, frequency, salience…):f1 > f2
� Ranking on M (stereotypical interpretation):m1 > m2
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A complete eventinterpretation is notavailable for Ipfwhenever aprogressiveinterpretation is possible.
�Pf…(f2)
↑
•←
�Ipf…(f1)
eCt(m2)
tCe(m1)
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(2’’) … on uže pro�ital "Vojnu i Mir".… he already read_PAST.PF “W&P”
“(when we met), he had already read “W&P””
� <Ipf_when_clause, “the time of meeting C e>� <Pf_when_clause, e C “the whole past
preceding the time of our meeting”>
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Example: � f1 = Ipf+past� f2 = Pf+past
� m1 = eCt ∧ t = the whole intervalpreceding the utterance time.
� m2 = ??
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� Ranking on F (harmony, frequency, salience…):f2 > f1
� Ranking on M (stereotypical interpretation):m1 > m2
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�←•f1 (Ipf_past)
↑↑
•←�f2 (Pf_past)
m2m1(eCt ∧t = past)
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By associative learning (Benz 2006) it isexpected that the interpretation of Pf getsstrengthened to include an implicature ofthe current relevance of the result state.
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(5) Kto otkryl okno? who open_PAST.PF window.
“Who has opened the window?”(the window is currently open)
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� What about m2?� “The unemployed form may soon find anew job, generally expressing somethingclosely related to but subtly different fromthe canonical interpretation that one mighthave expected” (Beaver & Lee, 2003:140).
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(5’) Kto otkryval okno? who open_PAST.IPF window.
“Who had the window open?”(the window is currently closed)
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IpfIpfS4
PfPfS3
PfIpfS2
IpfPfS1
closedopen
closedclosedH4
openopenH3
openclosedH2
closedopenH1
IpfPf
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� Determine expected utility for each profile(S,H) given the hearer’s probability function:
EU(S,H) = � P(m) x U(m,S,H)m
� Utility function of successful communication:
U(m,S,H) = 1, if H(S(m)) = m= 0 otherwise
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Assumptions (part of the common ground):� Probability of window being open at the
utterance time: 0.6� Probability of window being closed at the
utterance time: 0.4
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0.40.60.60.4S4
0.40.60.40.6S3
0.40.610S2
0.40.601S1
H4H3H2H1Partial
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� ���&�
� U(m,S,H) = 1/Complexity(S(m)), if H(S(m)) = m
= 0 otherwise
Assumptions (part of the common ground):� Complexity of ”Pf+past”: 1� Complexity of ”Ipf+past”: 2
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0.20.60.60.2S4
0.20.60.20.6S3
0.20.60.70S2
0.20.600.8S1
H4H3H2H1Partial
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� <S1,H1> (Horn) and <S2,H2> (anti-Horn) arestrict Nash equilibria.
� <S1,H1> is Pareto optimal (highest expectedutility) – Parikh’s unique solution.
� Blutner’s BiOT and Parikh’s GT model bothaccount for partial blocking in these simple cases.
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Example: imperatives under negation� f1 = Ipf_neg_imperative� f2 = Pf_neg_imperative
� m1 = S wants H not to perform action a� m2 = S warns H against accidentally
performing action a
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� Ranking on F (harmony, frequency, salience…):f1 > f2
� Ranking on M (stereotypical interpretation):m1 > m2
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(6) Ty, požalujsta, ne opazdyvaj. you please not be_lateIMP.IPF
“Please don’t be late.” (internet)
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(6’) [�erez 10 minut budet uže pozdno.]Smotri, ne opazdaj! lookIMP.IPF not become_late IMP.PF
“In 10 minutes it’ll already be too late. Be careful not to be late.” (internet)
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�←•f2 (Pf_imp)
↑↑
•←�f1 (Ipf_imp)
m2m1
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� GT and BiOT approaches can providenew insights into aspectual competitionin Russian
� A principled explanation for variousimplicatures associated with Ipf and Pf
� The temporal dimension of aspect playsa crucial role in the rankings of F and M.
� GT, BiOT or associative learning?
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� Beaver, David, and Hanjung Lee. 2003. Form-Meaning Asymmetries and Bidirectional Optimization. In Variation within Optimality Theory, ed. J. Spenader, A. Eriksson, Ö. Dahl. 138–148. University of Stockholm.
� Benz, Anton. 2001. Towards a framework for bidirectional optimality theory in dynamic contexts. Ms.
� Benz, Anton. 2006. Partial blocking and associative learning. Linguistics and Philosophy 29:587–615.
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� Blutner, Reinhard. 2000. Some aspects of optimality in natural language interpretation. Journal of Semantics 17:189–216.
� Blutner, Reinhard. 2006. Embedded implicatures and optimality theoretic pragmatics. In A Festschrift for Kjell Johan Sæbø, ed. T. Solstad, A. Grønn, and D. Haug, 11–29. Oslo.
� Dekker, Paul and Robert van Rooy. Bi-directional optimality: An application of game theory. Journal of Semantics 17:217–242.
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� Grønn, Atle. 2004. The Semantics and Pragmatics of the Russian Factual Imperfective. dr. art. thesis, published in Acta Humaniora 199. Oslo.
� Grønn, Atle. 2006. Information structure and aspectual competition. In Proceedings of the Ninth Symposium on Logic and Language, ed. B. Gyuris, L. Kalman, C. Piñon, and K. Varasdi, 70–77. Budapest
� Jäger, Gerhard. 2002. Some notes on the formal properties of bidirectional optimality theory. Journal of Logic, Language and Information 11(4):427–451.
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� Parikh, Prashant. 2000. Communication, meaning, and interpretation. Linguistics and Philosophy 23:185–212.
� van Rooy, Robert. 2004. Signalling games select Horn strategies. Linguistics and Philosophy 27:493–527.