Sunday, 5 August 2018

Data Modelling and Algorithmic Modelling Approaches

The difference of the K-Nearest Neighbors approach

Breiman, L. (2001). Statistical modeling: The two cultures (with comments and a rejoinder by the author). Statistical Science, 16(3), 199-231.

In Statistical Learning:
 → Data modelling
              y(𝒳1, 𝒳2,....𝒳n) = ꞵ0 + ∑ i𝒳i + ε
          - e.g., Multiple regression, Discriminant Analysis, etc.,

Algorithmic modelling
  • A set of algorithmic instructions that relate the independent and dependent variables.
  • e.g., K-Nearest Neighbors , Random forests, etc.,


Prediction


KNN  description for two inputs as well as classifications problems



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