Diagonal Hessian Approximation for Limited Memory Quasi-Newton via Variational Principle

Table 1

Selected test problems.

	TRIGONOMETRIC, SROSENBR, Extended White and Holst,
	Perturbed Quadratic, Raydan 1, Raydan 2, Diagonal 1, Diagonal 2, Diagonal 3, Hager,
	Generalized Tridiagonal 1, Extended Tridiagonal 1,
	Extended Three Expo Terms, Generalized Tridiagonal 2,
	Diagonal 5, HIMMELBC, Generalized PSC1, Extended PSC1,
	Extended Block-Diagonal BD1, Extended Maratos, Extended Hiebert,
	Quadratic QF1, Extended Quadratic Penalty QP1, Quadratic QF2,
	Extended EP1, Extended Tridiagonal 2, NONDIA, DIXMAANA,
	DIXMAANB, DIXMAANC, DIXMAANE, Broyden Tridiagonal,
	Almost Perturbed Quadratic, EDENSCH, STAIRCASE S1,
	Diagonal 6, DIXON3DQ, DIXMAANF, DIXMAANG, DIXMAANI,
	DIXMAANJ, DIXMAANK, DIXMAANL, ENGVAL1, COSINE, DENSCHNB,
	DENSCHNF, BIGGSB1, Scaled Quadratic SQ1, Scaled Quadratic SQ2.