A Modified Conjugate Gradient Method for Solving Large-Scale Nonlinear Equations

Algorithm 1

Modified NPRP method.

	Initial. Given a small constant and constants . Choose an initial point . Let .
Step 1. Stop if .
Step 2. Compute (9) to get .
Step 3. Let satisfying
	denote
	Step 4. Compute
	where
	and is a projection operator, defined by .
	Step 5. Let and go to Step 1.