Dual Sigmoid Model for Language Change

An interactive visualization that models how grammatical feelings and community acceptance evolve over time using a dual sigmoid approach.

About This Model

This visualization demonstrates a formalized approach to language change based on the interplay between:

• F(u): The "feeling of ungrammaticality" (ranging from -1 to 0)
• C(u): Community acceptance of a linguistic form (ranging from 0 to 1)
• Frequency: How often a construction appears in language use

The model uses independent sigmoid curves for both F(u) and C(u), with parameters that can be adjusted to explore different language change scenarios.

Key Features

• Independent sigmoid curves for grammatical feeling and community acceptance
• Adjustable parameters (steepness, midpoints, influence weights)
• Pre-defined examples of grammatical edge cases
• Visual representation of the classic S-curves observed in language change

Examples Included

• "I've finished it yesterday" - Temporal conflict between perfect aspect and past time adverbial
• "It very good" - Missing copula in predicative construction
• "We sheared three sheeps" - Overgeneralization of regular plural morphology
• "I saw Joan, a friend of whose was visiting" - Non-standard relative clause formation

Running Locally

1. Clone this repository
2. Run npm install to install dependencies
3. Run npm start to start the development server
4. Open http://localhost:3000 to view it in your browser

Deployment

This project is deployed using GitHub Pages. Visit the live demo to see it in action.

Technology Stack

• React.js
• Recharts for data visualization
• Tailwind CSS for styling