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Ricci curvature and the stream of thought
Yinon Nachshon1, Haim Cohen1, Paz M Naim1
1Department of Cognitive and Brain Science, Hebrew University of Jerusalem.
This study reveals that the direction of semantic associations, not just continuity, is key. We introduce a novel method using Ricci curvature to quantify this direction, showing it guides the flow of thought.
Area of Science:
- Cognitive Science
- Computational Linguistics
- Network Science
Background:
- Semantic associations are often modeled using continuity.
- The directionality of semantic transitions remains less understood.
- Existing models may not fully capture the dynamic flow of thought.
Purpose of the Study:
- To investigate the role of directionality in semantic associations.
- To introduce a novel quantitative method for measuring semantic transition dynamics.
- To challenge existing models by proposing direction of maximal resolution as a key factor.
Main Methods:
- Developed a hypergraph framework to model semantic transitions.
- Adapted discrete Ricci curvature to quantify the 'direction of maximal resolution' in semantic space.
- Utilized a categorical fluency task (animal naming) for empirical data collection.
Main Results:
- Found that 'edge stretchiness' (a measure of resolution) relates to transition probability.
- Demonstrated that incorporating Direction significantly enhances explanatory power over similarity alone.
- The proposed model suggests thought streams move towards maximal resolution.
Conclusions:
- Directionality is a critical, quantifiable factor in semantic associations.
- Discrete Ricci curvature offers a novel tool for analyzing semantic network dynamics.
- This approach provides new insights into the cognitive mechanisms underlying the stream of thought.
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