Ika Yuni Wulansari
PhD candidate in Mathematical Sciences (Statistics), University of Technology Sydney
Statistician researcher at the University of Technology Sydney, specialising in small area estimation, official statistics, measurement error in covariates, and applied statistical modelling.
This CV brings together research, publications, teaching, software contributions, and professional service, with a focus on policy-relevant statistics and official statistics practice.
Profile
Ika Yuni Wulansari is a researcher in statistics at the University of Technology Sydney, Faculty of Science, School of Mathematical and Physical Sciences. Her work focuses on small area estimation, official statistics, measurement error in covariates, and applied statistical modelling, with applications to survey, census, administrative, geospatial, remote sensing, and social development data.
Her profile reflects strong links to Statistics Indonesia/BPS and official statistics practice, alongside more than 15 years of teaching and applied statistical experience. She is also active in academic mentoring, conference engagement, R package contributions, and professional service that support research translation and statistical capacity building.
Education
PhD candidate in Mathematical Sciences (Statistics)
University of Technology Sydney, Faculty of Science, School of Mathematical and Physical Sciences, Sydney, Australia.
Current doctoral study and research in statistics at UTS.
Master of Applied Statistics (M.Stat.)
Bachelor in Applied Statistics (S.S.T.)
Research Interests
- Small area estimation
- Official statistics
- Measurement error in covariates
- Survey data and census data
- Applied statistics
- Bayesian modelling
- Remote sensing and modern auxiliary data
- SDG-related statistical analysis
Publications
Publications and proceedings, listed from most recent to earliest.
Exploration of approaches to small area estimation with measurement errors; and their application to Indonesian household surveys
Wulansari, I.Y., Woodcock, S., Brown, J. Proceedings of Statistics Canada Methodology Symposium 2024.
Determinants of Participation in a Disaster Insurance Programme in Indonesia: A Probit Regression with SMOTE Approach
Oktora, S.I., Wulansari, I.Y., Siagian, T.H. In Opdyke, A. and Pascua de Rivera, L. (eds), Inclusive and Integrated Disaster Risk Reduction. AIWEST-DR 2022. Springer Proceedings in Earth and Environmental Sciences. Springer, Cham.
Forecasting the Price of Curly Red Chili Peppers in East Java Province Using Arima Model with Iterative Outlier Detection Procedure
Erdien, F., Rahayu, W., Sumargo, B., Wulansari, I.Y., and Ali, D.R. Jurnal Statistika Dan Aplikasinya, 9(2), 82-92.
The Influences of Climate Change and Social Vulnerability on Dengue Fever Incidence Rate in West Java Province 2019-2023
Hanif, A.N., Sohibien, G.P.D., and Wulansari, I.Y. Proceedings of The International Conference on Data Science and Official Statistics, 2025(1), 782-797.
Structural Equation Modeling Method to Analyze the Influence of Learning Style, Mathematics Resilience, and Learning Motivation on Mathematical Problem-Solving Ability
Cahyo, E.D., Mustika, J., Sari, D.R.P., Ikashaum, F., and Wulansari, I.Y. Al Ibtida: Jurnal Pendidikan Guru MI, 12(1), 120-136.
Detection of Factors Affecting Rainfall Intensity in Jakarta
Sumargo, B., Handayani, D., Lubis, A.P., Firmasyah, I., and Wulansari, I.Y. Jurnal Ilmu Lingkungan, 23(1), 133-140.
Optimizing Malaria Control: Granular and Cost-Effective Mosquito Habitat Index in Endemic Areas Through Satellite Imagery
Daulay, N.A., Putri, S.R., Wijayanto, A.W., and Wulansari, I.Y. Knowledge Engineering and Data Science (KEDS), 7(1), 40-57.
Small Area Estimation Approaches Using Satellite Imageries Auxiliary Data for Estimating Per Capita Expenditure in West Java, Indonesia
Feriyanto, M., Wijayanto, A.W., Wulansari, I.Y., and Parwanto, N.B. Jurnal Aplikasi Statistika & Komputasi Statistik, 16(2), 205-221.
The effectiveness of problem-based learning methods in improving prospective elementary school teachers' critical thinking skills
Harokah, S., Wibowo, S.E., Sudigdo, A., Yudianto, A., and Wulansari, I.Y. Al Ibtida: Jurnal Pendidikan Guru MI, 11(1), 74-85.
Small Area Estimation of Household Expenditure on Insurance Programs for Minimizing the Impact of Natural Disasters in West Java, Indonesia
Laksono, B.C., Wulansari, I.Y., and Permatasari, N. Statistical Journal of the IAOS, 39(3), 729-743.
Measuring The Performance of SDGs in Provincial Level Using Regional Sustainable Development Index
Thamrin, N., Wulansari, I.Y., and Irawan, P.B. Journal of Environmental Science and Sustainable Development, 6(2).
Small Area Estimation Using Empirical Bayes Poisson Gamma on Adolescent Fertility Rate in Indonesia
Septianingsih, P. and Wulansari, I.Y. Indonesian Journal of Statistics and Its Applications, 7(2), 114-129.
M-Quantile Small Area Estimation for Household Per Capita Income: A Case Study of SubDistricts in Special Region Yogyakarta, Indonesia
Nulkarim, A.R. and Wulansari, I.Y. Proceedings of the 63rd ISI World Statistics Congress 2022.
Identifying the potential participation in natural disaster insurance: first attempt based on a national socio-economic survey in Indonesia
Oktora, S.I., Wulansari, I.Y., Siagian, T.H., Laksono, B.C., Sugiandewi, N.N.R., and Anindita, N. International Journal of Disaster Resilience in the Built Environment.
Estimasi Angka Partisipasi Kasar Perguruan Tinggi Level Kabupaten/Kota di Pulau Kalimantan Tahun 2020 dengan Small Area Estimation Hierarchical Bayes Beta-Logistic
Istiqomah, N.P. and Wulansari, I.Y. Proceeding of National Seminar of Official Statistics 2022.
Penerapan Empirical Best Linear Unbiased Prediction (EBLUP) pada Pendugaan Tingkat Pengangguran Terbuka Level Kecamatan di Provinsi Banten
Apriliansyah and Wulansari, I.Y. Proceeding of National Seminar of Official Statistics 2021.
Implementasi Empirical Best Linear Unbiased Prediction Fay-Herriot dalam Menduga Rata-Rata Pengeluaran per Kapita Level Kecamatan di Provinsi Jawa Timur dengan Tambahan Informasi Cluster
Maulana, M.W. and Wulansari, I.Y. Proceeding of National Seminar of Official Statistics 2021.
M-quantile Chambers-Dunstan Untuk Pendugaan Area Kecil (Studi Kasus: Data Pengeluaran Rumah Tangga Per Kapita DI Yogyakarta Tahun 2018)
Nulkarim, A.R. and Wulansari, I.Y. Proceeding of National Seminar of Official Statistics 2021.
Application of Spatial Empirical Best Linear Unbiased Prediction (SEBLUP) of Open Unemployment Rate on Sub-District Level Estimation in Banten Province
Apriliansyah and Wulansari, I.Y. Proceedings of the 2021 International Conference on Data Science and Official Statistics (ICDSOS).
Small area estimation with application to households with energy-saving lamps estimates in Java Island, Indonesia
Siagian, T.H., Wulansari, I.Y., and Pasaribu, E. Journal of Physics: Conference Series, 1752, 012025.
Spillover Effects of Social and Economic Interactions on COVID-19 Pandemic Vulnerability Across Indonesia's Regions
Pasaribu, E., Irawan, P.B., Siagian, T.H., Wulansari, I.Y., and Kurniawan, R. Economic Research Institute for ASEAN and East Asia (ERIA) Discussion Paper Series No. 409.
Estimation of Households that Manages Their Domestic Waste in Not Eco-friendly Ways in Municipal Level in Indonesia using EBLUP Fay-Herriot Model
Wulansari, I.Y., Siagian, T.H., and Pasaribu, E. IOP Conference Series: Earth and Environmental Science, 519, 012057.
Efficiency of Several Complex Survey Design using EBLUP in Small Area Estimation (SAE)
Ratu, N.Y. and Wulansari, I.Y. Proceedings of the 1st International Conference on Statistics and Analytics, ICSA 2019, Bogor, Indonesia.
The Construction of Child Multidimensional Poverty Index and Its Utilization for Sustainable Poverty Alleviation in Indonesia in 2017
Aulia, L.A. and Wulansari, I.Y. Proceedings of the National Seminar of Official Statistics 2019, Jakarta, Indonesia.
Poverty Vulnerability Estimation Using Ridge Regression, LASSO, and Elastic-Net in Central Java Province
Kusuma, G.W. and Wulansari, I.Y. Proceedings of the National Seminar of Official Statistics 2019, Jakarta, Indonesia.
Poverty Vulnerability: Estimating, Mapping, Characterizing, and Policy Recommendation in Small Sample Data
Rahman, A. and Wulansari, I.Y. Jurnal Aplikasi Statistika dan Komputasi Statistik (ASKS), 10(2).
Application of Small Area Estimation (SAE) Pseudo-EBLUP Method in Official Statistics in Indonesia Case Study: Estimating Household Expenditures in East Java Province in 2016
Dedianto, D. and Wulansari, I.Y. Jurnal Aplikasi Statistika dan Komputasi Statistik (ASKS), 10(2).
Bayesian Hierarchical Small Area Model for Unmatched Sampling
Wulansari, I.Y. Proceeding of Seminar Nasional Matematika dan Statistika (SEMASTAT) 2016.
Small Area Estimation (SAE) of Poor Household Proportion in Sampang District Using Hierarchical Bayes (HB) - Logit Normal
Wulansari, I.Y., Pawitan, G., and Sunengsih, N. Proceeding of the National Seminar of Padjadjaran University 2014.
R Package Contributions
Documented contributions to R packages related to small area estimation and statistical modelling.
saeHB
Ubaidillah, A., Wulansari, I.Y., and Perwira, Z.Y. Small Area Estimation using Hierarchical Bayesian Method.
zipsae
Utomo, F.W. and Wulansari, I.Y. Small Area Estimation with Zero-Inflated Model.
saeeb
Fauziah, R.A. and Wulansari, I.Y. Provides small area estimation for count response data by implementing the Empirical Bayes Poisson-Gamma model.
Conferences
Selected conference presentations and participation.
The International Statistical Institute (ISI) World Statistics Congress
The Australian Statistical Conference (ASC)
7th Australian Mathematical Sciences Students Conference
Statistics Canada Methodology Symposium
FOSTER 2023 (Faculty of Science Transdisciplinary ECR Retreat)
Australia and New Zealand Industrial and Applied Mathematics (ANZIAM) Conference
The Use of R in Official Statistics 2020 (uRos2020)
The 4th ASIA International Multidisciplinary Conference
The 5th ASIA International Conference
The 2nd International Conference on Statistics, Mathematics, Teaching, and Research (ICSMTR)
The National Seminar of Mathematics and Statistics
The 4th National Seminar of Statistics
Honors and Awards
SSA - ABS PhD Top Up Scholarship
JB Douglas Post Graduate Award for PhD research excellence
Indonesian Government Endowment Fund (LPDP) doctoral scholarship
Winner of the XXI ISEI Congress Call for Papers and National Seminar
Satya Lencana Karya Satya
1st Best Paper in National Seminar of Official Statistics
Indonesian Government scholarship for master's degree
Best participant in leadership training conducted by Statistics Indonesia (BPS)
2nd Best Graduate, Bachelor degree
Indonesian Government undergraduate scholarship
Grants
SSA New South Wales Branch Conference Grant
Cheryl E. Praeger Travel Grant
Awarded through the Australian Mathematical Society and the Women in Mathematics Special Interest Group for the ISI World Statistics Congress 2025.
Economic Research Institute for ASEAN and East Asia (ERIA) research grant
Health Financing Activity project fund
International Course Grant on Poverty Measurement
Technical Skills
- LaTeX / Overleaf
- R
- SPSS
- MATLAB
- STATA
- E-Views
- Statistica
- WinBUGS
- ArcGIS
- QGIS
- Tableau
- LISREL
- SMARTPLS
Professional Memberships and Community Involvement
United Nations Association of Australia (UNAA), New South Wales
Community leader for Indonesia Endowment Fund for Education (LPDP) UTS scholars
Australian Mathematical Society (AustMS)
Statistical Society of Australia (SSA)
Association of Australian Mathematics Students (AAMS)
Indonesian Statistical Association (ISI-Indonesia)
Indonesian Network of Doctoral and Early Career Researchers in Australia (INDERA)
Community of Data Enthusiast (CODE)
Indonesia R-Ladies Community, Sydney R-Ladies Community, and R-Ladies Global
Volunteer and Service
Small area estimation capacity-building webinar trainer
Scholarship mentor for Indonesia Endowment Fund for Education (LPDP)
Conference abstract reviewer for R-Ladies Global
Academic journal and conference peer reviewer, and editorial board contributor
Academic References
Academic references are listed below.
Prof. James Brown
Professor of Official Statistics, Head of Discipline (Mathematical Sciences), School of Mathematical and Physical Sciences, University of Technology Sydney, Australia.
Assoc. Prof. Stephen Woodcock
Associate Professor, School of Mathematical and Physical Sciences, University of Technology Sydney, Australia.