1. For non-differentiable functions, gradient methods are ill-defined. 2. Examples of gradient method are the gradient descent and the conjugate gradient. 3. One example of the former is conjugate gradient method . 4. His most important contribution is the introduction of the gradient method in quantum chemistry. 5. Together with Cornelius Lanczos and Eduard Stiefel, he invented the conjugate gradient method . 6. Specific choices lead to various methods including the conjugate gradient method and Gaussian elimination. 7. The rotation matrix can be recovered using gradient methods likes those in the SIFT descriptor. 8. GMRES and the conjugate gradient method . 9. Evolutionary methods led the way in the exploration of non-gradient methods for MDO applications. 10. The conjugate gradient method can also be used to solve unconstrained optimization problems such as energy minimization.
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