Self-Organizing Maps (SOMs):Proposed RMIP Diagnosis

1/16/02

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Table of Contents

Self-Organizing Maps (SOMs):Proposed RMIP Diagnosis

SOM set: Sea-level pressure

Initial - Random Distribution

Apply input sequence of maps: example

Compare sample to ...

Find closest map ...(here - smallest RMS difference)

Nudge also a surrounding region ...

Nudge also a surrounding region ...

Nudge also a surrounding region ...

SOM map (0,2) - 1 Iteration

SOM map (0,2) - 10 Iterations

SOM map (0,2) - 30 Iterations

SOM map (0,2) - 100 Iterations

SOM map (0,2) - 1,000 Iterations

SOM map (0,2) - 10,000 Iterations

SOM map (0,2) - 50,000 Iterations

SOM map (0,2) - 100,000 Iterations

SOM map (0,2) - 150,000 Iteration

Simulation Domain

SOM set: Mean Sq. Error vs. Iterations

SOM set: Sea-level pressure

SOM set: Lead/Lag Transitions?

Frequency of Maps that Lead: 90 Days

Frequency of Maps that Lead: 60 Days

Frequency of Maps that Lead: 30 Days

Frequency of Maps that Lead: 10 Days

Frequency of Maps that Lead: 5 Days

Frequency of Maps that Lead: 4 Days

Frequency of Maps that Lead: 3 Days

Frequency of Maps that Lead: 2 Days

Frequency of Maps that Lead: 1 Day

Frequency of Maps that Lag: 1 Day

Frequency of Maps that Lag: 2 Days

Frequency of Maps that Lag: 3 Days

Frequency of Maps that Lag: 4 Days

Frequency of Maps that Lag: 5 Days

Frequency of Maps that Lag: 10 Days

Frequency of Maps that Lag: 30 Days

Frequency of Maps that Lag: 60 Days

Frequency of Maps that Lag: 90 Days

Acknowledgments

SOM set - 1 Iteration

SOM set - 10 Iterations

SOM set - 30 Iterations

SOM set - 100 Iterations

SOM set - 1,000 Iterations

SOM set - 10,000 Iterations

SOM set - 50,000 Iterations

SOM set - 100,000 Iterations

SOM set - 150,000 Iterations

Simulation Domain

Acknowledgments

Author: Bill Gutowski

Email: gutowski@iastate.edu

Home Page: htp://www.ge-at.iastate.edu

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