The Spectral conjugate gradient (SCG) methods are among the efficient variants of CG
algorithms which are obtained by combining the spectral gradient parameter and CG …

The short offset transient electromagnetic method (SOTEM) has become one of the main
methods for coal hydrogeology investigations and mineral explorations due to its …

Semi-airborne transient electromagnetics (SATEM) is a geophysical survey tool known for its
ability to perform three-dimensional (3D) observations and collect high-density data in large …

A new efficient random search algorithm is introduced for solving inversion problems in
geophysical studies. The proposed algorithm is inherently a stochastic optimization method …

Hybridization is one of the popular approaches in modifying the conjugate gradient method.
In this paper, a new hybrid conjugate gradient is suggested and analyzed in which the …

Using a hybrid simulation method that combines a non-linear conjugate gradient (NCG)
method for solving large-scale unconstrained optimization problems with a Brownian …

Geophysical inverse problems are commonly ill-posed and require proper regularization to
gain acceptable solutions. Adopting constraints on the smoothness and/or specified …

The short-offset transient electromagnetic (SOTEM) method carries out surveys in the near
source region; the strong signal makes it suitable for deep detection with high precision …

Nonlinear conjugate gradient (CG) method holds an important role in solving large-scale
unconstrained optimization problems. In this paper, we suggest a new modification of CG …

Conjugate gradient methods are interesting iterative methods that solve large scale
unconstrained optimization problems. A lot of recent research has thus focussed on …