Conjugate gradients (CG) is one of the most widely used algorithms in optimization. What’s taught in schools about CG is a pseudo-code of 5 steps; in reality, it is much more t
The topic of global warming has transformed during the last decades from a vague scientific hypothesis to a fierce political debate. Today, there are strong reasons to believe the
Very insightful tutorial on reverse time migration (RTM) by Etienne Robein. RTM is one of the most sophisticated migration techniq
Curvelets have emerged as an important tool in signal analysis. Like other transforms, the curvet transform represents signal in a different domain which eases analysis. In partic
I had a good time attending this year’s SEG convention.
SEG stands for Society of Exploration Geophysicists and is the largest community of geophysicists worldwide. Industries and
When you try to solve an optimization or inverse problem, you most likely need to deal with the concept of adjoint operator. Beyond the mathematical definition, I lacked an intuit