👾 Algorithms

• First, read about the polis opinion matrix to understand the format of data Polis gathers from participants and provides in its export
• Dimensionality reduction 👾 Algorithms Polis uses:
  • PCA
  • UMAP
    • UMAP explained: https://www.youtube.com/watch?v=G9s3cE8TNZo&ab_channel=MachineLearningDojowithTimScarfe
• Explanations of dimensionality reduction 👾 Algorithms:
  • What is a high dimensional space?
  • The Beginner's Guide to Dimensionality Reduction
  • Principle Components Analysis Explained Visually
  • Physics Intuition for Regression: PCA as Springs
• Clustering
  • K-Means
  • Leiden graph based community detection
  • Hierarchical clustering
• Explanations of clustering
  • Clustering: An Introduction
  • Cluster Analysis (Wikipedia)
  • Graph Based Clustering
  • Explanation of Leiden
• General summary statistics
  • See: 🔬 Analysis
• "Does Polis use natural language processing (NLP)?"
  • "No. The machine learning 👾 Algorithms run are solely run on the polis opinion matrix of agrees, disagrees and passes by participants on comments. Thus, Polis is language agnostic."