Noor Akma Ibrahim
State University of Malang
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Publication
Featured researches published by Noor Akma Ibrahim.
INNOVATIONS THROUGH MATHEMATICAL AND STATISTICAL RESEARCH: Proceedings of the 2nd International Conference on Mathematical Sciences and Statistics (ICMSS2016) | 2016
Mostafa Karimi; Noor Akma Ibrahim; Mohd Rizam Abu Bakar; Jayanthi Arasan
Semiparametric analysis and rank-based inference for the accelerated failure time model are complicated in the presence of interval censored data. The main difficulty with the existing rank-based methods is that they involve estimating functions with the possibility of multiple roots. In this paper a class of asymptotically normal rank estimators is developed which can be aquired via linear programming for estimating the parameters of the model, and a two-step iterative algorithm is introduce for solving the estimating equations. The proposed inference procedures are assessed through a real example.
THE 22ND NATIONAL SYMPOSIUM ON MATHEMATICAL SCIENCES (SKSM22): Strengthening Research and Collaboration of Mathematical Sciences in Malaysia | 2015
Rifina Arlin; Noor Akma Ibrahim; Jayanthi Arasan; Rizam Abu Bakar
This paper considers a method to analyze semiparametric binary models for clustered survival data when the responses are correlated. We extend parametric generalized estimating equation (GEE) to semiparametric GEE by introducing smoothing spline into the model. A backfitting algorithm is used in the derivation of the estimating equation for the parametric and nonparametric components of a semiparametric binary covariate model. The properties of the estimates for both are evaluated using simulation studies. We investigated the effects of the strength of cluster correlation and censoring rates on properties of the parameters estimate. The effect of the number of clusters and cluster size are also discussed. Results show that the GEE-SS are consistent and efficient for parametric component and nonparametric component of semiparametric binary covariates.
World Academy of Science, Engineering and Technology, International Journal of Mathematical, Computational, Physical, Electrical and Computer Engineering | 2008
Noor Akma Ibrahim; Abdul Kudus; Isa Daud; M. R. Abu Bakar
Archive | 2009
Malaysian Mathematical; Mohd Rizam; Abu Bakar; Khalid A. Salah; Noor Akma Ibrahim; Kassim Haron
Archive | 2015
Foad Shokrollahi; Adem Kilicman; Noor Akma Ibrahim; Fudziah Ismail
Archive | 2010
Sarkhosh Seddighi Chaharborj; Mohd Rizam Abu Bakar; Fudziah Ismail; Noor Akma Ibrahim; Malik Abu Hassan; V. Alli
Archive | 2013
Noraishah Mohd. Idris; Isthrinayagy Krishnarajah; Noor Akma Ibrahim; Munn Sann Lye
Archive | 2011
Bader Ahnad I. Aljawadi; Mohd Rizam Abu Bakar; Noor Akma Ibrahim
Archive | 2008
Mohd Rizam Abu Bakar; Salisu Garba Mohammed; Noor Akma Ibrahim; Mansor Monsi
Jurnal Teknologi | 2006
Mohd Rizam Abu Bakar; Isa Daud; Noor Akma Ibrahim; Desi Rahmatina