Studies on modi ed limited-memory bfgs method in full waveform inversion

HIGHLIGHTS

• who: January and collaborators from the China University of Geosciences have published the Article: Studies on modi ed limited-memory BFGS method in full waveform inversion, in the Journal: (JOURNAL)
• what: Next, the authors compare the mL-BFGS method with the L-BFGS and steepest descent method through time-domain FWI on a regenerated Marmousi model.
• how: The difference between the exact Hessian matrix and the approximate Hessian matrix B can be expressed by the following formula where subscript k indicates the iteration number u03b1 denotes the step length g represents the gradient . . .
  

   

  

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