ded by this
 package and its sub-packages are a subset of the one defined in the <code>analysis</code>
 package, namely the real and vector valued functions. These functions are called
 objective function here. When the goal is to minimize, the functions are often called
 cost function, this name is not used in this package.
 </p>

 <p>
 Optimizers are the algorithms that will either minimize or maximize, the objective function
 by changing its input variables set until an optimal set is found. There are on