7.5 Multivariable Searches

• Local Search Space

• A topographical map shows the relationship between search parameters and cost values.

 

Figure 1.35 Local searches

• Global Search space. In this case the system becomes ’stuck’ in a local mimina.

 

Figure 1.36 Global searches

• Global Search space. In this case the system searches all maxim.

 

Figure 1.37 A Global Search

 

7.5.1 Algorithms

• The search algorithms change system parameters and try to lower system parameters.

• The main question is how to change the system paramters to minimize the system value.

7.5.2 Random Walk

 

7.5.3 Gradient Decent

 

7.5.4 Simplex