Friday, April 25, 2008: Harvill rm. 115

1:00 Welcome by Mike Hammond
Introductory remarks by Andy Wedel
Session A:
1:15 - 2:15 Harry Tily
Diachronic processing preferences and their implications for models of syntactic change
2:15 – 3:15 Neal Snider
An exemplar model of syntactic production
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Tea Break

3:30 – 4:30 Joan Bresnan
Predicting Syntax: Processing Dative Constructions in Two Varieties of English
4:30 – 5:30 Discussion

Dinner at Poca Cosa

Saturday, April 26, 2008: Harvill rm. 102

8:30 Coffee
Session B:
8:45 – 9:45 Rob Malouf, Farrell Ackerman and Jim Blevins
Inflectional morphology as a complex adaptive system
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9:45 – 10:45 Melissa Redford
Meaning and Mechanics in Speech and Language Acquisition

Tea Break

11:00 – 12:00 Eduardo Altmann
Recurrences in processes with long-term memory

Lunch

Session C:
1:30—2:30 Robert Daland
Language variation: convergence, divergence and death
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2:30 – 3:30 Colin Dawson
'Second-Order Learning' as a Source of Structure Stabilization in Both Individual Learning and Cultural Evolution
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Tea Break

3:45 – 4:45 Andy Wedel
Modeling sublexical contrast maintenance as an emergent effect of lexical category competition
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4:45 – 5:45 Clay Beckner and Andy Wedel
Modeling contributions of usage versus acquisition to language change
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Department Potluck party at 7 at Adam Ussishkin and Andy Wedel’s house

Recurrences in processes with long-term memory

Eduardo G. Altmann

Since the work of Poincare on the stability of the solar system, recurrence is a fundamental concept in mathematics and physics. More recently, the time between recurrences of events of the same type has been successfully applied in the characterization of dynamical systems and time series in fields ranging from finance to earthquakes. In this seminar, I will investigate the statistics of recurrences in systems with long-term memory, drawing some formal analogies between physical systems and linguistic systems. First, I show that there is no unique correspondence between the recurrence time distribution and the auto-correlation function, shedding new light on the interpretation of previous results in the literature. Finally, I will report on an ongoing investigation of the recurrence between words in written text. It suggests that different classes of words in the same frequency range can have statistically distinct recurrence patterns. I will conclude with some speculative connections to psycholinguistic mechanisms for word choice.