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1
Complex Signals: Reflexivity, Hierarchical Structure, and Modular Composition
LaCroix, Travis. - : eScholarship, University of California, 2020
Abstract: This dissertation argues that what drives the emergence of complex communication systems is a process of modular composition, whereby independent communicative dispositions combine to create more complex dispositions. This challenges the dominant view in language-origins research, which attempts to resolve the explanatory gap between (simple) communication and (natural) language by demonstrating how complex syntax evolved. I show that these accounts fail to maintain sensitivity to empirical data: genuinely compositional syntax is extremely rare or non-existent in nature. In contrast, I propose that the reflexive properties of natural language—the ability to use language to talk about language—provide a plausible alternative explanatory target.Part I provides the philosophical foundation of this novel account using the theoretical framework of Lewis-Skyrms signalling games and drawing upon relevant work in evolutionary biology, linguistics, cognitive systems, and machine learning. Part II provides a concrete set of models, along with analytic and simulation results, that show precisely how (and under what circumstances) this process of modular composition is supposed to work.
Keyword: Biolinguistics; Evolution & development; Evolution of Language; Language Origins; Linguistics; Philosophy of linguistics; Philosophy of science; Signalling Games
URL: https://escholarship.org/uc/item/5328x080
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2
Using Logic to Evolve More Logic: Composing Logical Operators via Self-Assembly
LaCroix, Travis. - : Oxford University Press, 2019
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3
Using Logic to Evolve More Logic: Composing Logical Operators via Self-Assembly
LaCroix, Travis. - 2019
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4
On Salience and Signalling in Sender-Receiver Games: Partial Pooling, Learning, and Focal Points
LaCroix, Travis. - : Springer (Springer Science+Business Media B.V.), 2019
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