12.5 Multivariable Searches

• Local Search Space

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

 

Figure 12.7 Local searches

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

 

Figure 12.8 Global searches

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

 

Figure 12.9 A Global Search

 

12.5.1 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.

12.5.2 Random Walk

 

12.5.3 Gradient Decent

 

12.5.4 Simplex