Usman Abbas Yakubu

Application of spectral conjugate gradient methods for solving unconstrained optimization problems

Ibrahim Mohammed Sulaiman, Usman Abbas Yakubu, Mustafa Mamat · An International Journal of Optimization and Control Theories & Applications (IJOCTA) · 2020 · 26 citations · Full text

Numerical Analysis, Unconstrained Optimization Problems, Mathematical Programming +13

Time Series Model Analysis Using Autocorrelation Function (ACF) and Partial Autocorrelation Function (PACF) for E-wallet Transactions during a Pandemic

Usman Abbas Yakubu, Moch Panji Agung Saputra · International Journal of Global Operations Research · 2022 · 21 citations · Full text

Partial Autocorrelation Function, Fintech, E-wallet Transactions +12

A NEW CONJUGATE GRADIENT COEFFICIENT WITH EXACT LINE SEARCH FOR UNCONSTRAINED OPTIMIZATION

Abba V. Mandara, Mustafa Mamat, Mohammed Yusuf Waziri et al. · Far East Journal of Mathematical Sciences (FJMS) · 2018 · 15 citations

Numerical Analysis, Mathematical Programming, Engineering +8

A RECENT MODIFICATION ON DAI-LIAO CONJUGATE GRADIENT METHOD FOR SOLVING SYMMETRIC NONLINEAR EQUATIONS

Usman Abbas Yakubu, Mustafa Mamat, Mohamad Afendee Mohamad et al. · Far East Journal of Mathematical Sciences (FJMS) · 2018 · 14 citations

Numerical Analysis, Pde-constrained Optimization, Nonlinear Optimization +3

The Performance Analysis of a New Modification of Conjugate Gradient Parameter for Unconstrained Optimization Models

Ibrahim Mohammed Sulaiman, Mustafa Mamat, Mohammed Yusuf Waziri et al. · Mathematics and Statistics · 2021 · 13 citations · Full text