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Hire Dr. Atilla G.

Italy

USD 50 /hr

Statistics Professor & Data Science Consultant | Specialist in Statistical Modeling, Simulation & Research Methods

Profile Summary

I am a Professor of Statistics with over 25 years of experience in data analysis, statistical modeling, and applied research. Skilled in R, SPSS, MINITAB, I provide advanced analytical solutions for both academic research and business applications. My work spans biostatistics, machine learning, econometrics, and data visualization, with proven expertise in designing studies, analyzing complex datasets, and delivering actionable insights. I have led international research projects, published extensively in peer-reviewed journals, and served as Guest Editor for leading statistical journals. I specialize in turning complex data into clear, impactful outcomes, whether supporting researchers with publication-ready analyses or helping businesses apply data-driven strategies for decision-making.

Subject Matter Expertise

• ☆ Biostatistics
• ☆ Data Analysis
• ☆ Data Visualization
• ☆ Statistics
• ☆ Applied Statistics
• ☆ Social Statistics
• ☆ Mathematical Statistics
• ☆ Medical Statistics
• ☆ Health Data Analysis
• ☆ Environmental Science
• ☆ Environmental Statistics
• ☆ Educational Statistics
• ☆ SPSS
• ☆ Excel
• ☆ R
• ☆ Hypothesis
• ☆ Research Methodology
• ☆ Skills Training
• ☆ Business Statistics
• ☆ Econometrics

Services

• Writing
• Research
• Consulting
• Data & AI
• Product Development

Writing Clinical Trial Documentation, Technical Writing, Business & Legal Writing, General Proofreading & Editing

Research Market Research, User Research

Consulting Business Strategy Consulting, Digital Strategy Consulting, Scientific and Technical Consulting

Data & AI Statistical Analysis, Data Visualization, Data Cleaning, Data Processing, Data Insights

Product Development Formulation

Work Experience

Muğla University

March 2006 - Present

Academic Support Research Assistant

Hacettepe University

September 2000 - January 2006

Statistician - Researcher

Mugla Sitki Kocman University

July 1995 - September 2000

Graduate Research Assistant / Research Assistant

Gazi University Ankara

September 1994 - July 1995

Education

PhD Statistics

Hacettepe University

September 2000 - December 2005

MSc in Statistics

University of Sheffield

September 1996 - November 1997

BSc in Statistics

Gazi University Ankara - Turkey

September 1990 - July 1994

Certifications

• Certification details not provided.

Publications

JOURNAL ARTICLE

Uğur Çalışkan, Atila Göktaş (2025). Changes in Residents’ Perceptions of and Support to Tourism: A Longitudinal Study . Advances in Hospitality and Tourism Research (AHTR).

Selman Mermi, Atila Göktaş, Özge Akkuş (2024). How well do ridge parameter estimators proposed so far perform in terms of normality, outlier detection, and MSE criteria? . Communications in Statistics - Simulation and Computation.

Mermi, S., Göktaş, A., Akkuş, Ö.(2024). How well do ridge parameter estimators proposed so far perform in terms of normality, outlier detection, and MSE criteria? . Communications in Statistics Simulation and Computation.

Are most proposed ridge parameter estimators skewed and do they have any effect on MSE values? Selman Mermi, Atila Göktaş & Özge Akkuş (2021) Are most proposed ridge parameter estimators skewed and do they have any effect on MSE values?, Journal of Statistical Computation and Simulation, DOI: 10.1080/00949655.2021.1883611 . Journal of Statistical Computation and Simulation.

Ijaz, M., Mashwani, W.K., Göktaş, A., Unvan, Y.A.(2021). RETRACTED ARTICLE: A novel alpha power transformed exponential distribution with real-life applications (JOURNAL OF APPLIED STATISTICS, (2021), 48, 11, (I–XVI), 10.1080/02664763.2020.1870673) . Journal of Applied Statistics. 48. (11). p. I-XVI.

Mermi, S., Göktaş, A., Akkuş, Ö.(2021). Are most proposed ridge parameter estimators skewed and do they have any effect on MSE values? . Journal of Statistical Computation and Simulation. 91. (10). p. 2074-2093.

Göktaş, A., Akkuş, Ö.(2021). Editorial to the special issue: Recent statistical methods for data analysis, applied economics, business finance . Journal of Applied Statistics. 48. (13-15). p. 2231-2238.

Göktaş, A., Kaçiranlar, S., Akdi, Y.(2021). Preface . Communications in Statistics Theory and Methods. 50. (7). p. 1531.

Göktaş, A., Akkuş, Ö., Kuvat, A.(2021). A new robust ridge parameter estimator based on search method for linear regression model . Journal of Applied Statistics. 48. (13-15). p. 2457-2472.

Muhammad Ijaz and Wali Khan Mashwani and Atilla Göktaş and Yuksel Akay Unvan (2021). A novel alpha power transformed exponential distribution with real-life applications . Journal of Applied Statistics. 0. (0). p. 1-16. Taylor & Francis

Mashwani, W.K., Khan, A., Göktaş, A., Unvan, Y.A., Yaniay, O., Hamdi, A.(2021). Hybrid differential evolutionary strawberry algorithm for real-parameter optimization problems . Communications in Statistics Theory and Methods. 50. (7). p. 1685-1698.

A new robust ridge parameter estimator based on search method for linear regression model Atila Göktaş, Özge Akkuş & Aykut Kuvat (2020) A new robust ridge parameter estimator based on search method for linear regression model, Journal of Applied Statistics, DOI: 10.1080/02664763.2020.1803814 . Journal of Applied Statistics.

(2020). Large-scale global optimization based on hybrid swarm intelligence algorithm . Journal of Intelligent & Fuzzy Systems.

Aqib Ali, Salman Qadri, Wali Khan Mashwani, Wiyada Kumam, Poom Kumam, Samreen Naeem, Atila Goktas, Farrukh Jamal, Christophe Chesneau, Sania Anam, et al.(2020). Machine Learning Based Automated Segmentation and Hybrid Feature Analysis for Diabetic Retinopathy Classification Using Fundus Image . Entropy. 22. (5). p. 567. {MDPI} {AG}

Aqib Ali, Salman Qadri, Wali Khan Mashwani, Wiyada Kumam, Poom Kumam, Samreen Naeem, Atila Goktas, Farrukh Jamal, Christophe Chesneau, Sania Anam, et al. (2020). Machine Learning Based Automated Segmentation and Hybrid Feature Analysis for Diabetic Retinopathy Classification Using Fundus Image . Entropy.

Atila Göktaş and Özge Akkuş (2020). Comparison of partial least squares with other prediction methods via generated data . Journal of Statistical Computation and Simulation. 90. (16). p. 3009-3024. Taylor & Francis

Mashwani, W.K., Hamdi, A., Asif Jan, M., Göktaş, A., Khan, F.(2020). Large-scale global optimization based on hybrid swarm intelligence algorithm . Journal of Intelligent and Fuzzy Systems. 39. (1). p. 1257-1275.

Göktaş, A., Akkuş, Ö.(2020). Comparison of partial least squares with other prediction methods via generated data . Journal of Statistical Computation and Simulation. p. 3009-3024.

Wali Khan Mashwani and Abdullah Khan and Atila Göktaş and Yuksel Akay Unvan and Ozgur Yaniay and Abdelouahed Hamdi(2020). Hybrid differential evolutionary strawberry algorithm for real-parameter optimization problems . Communications in Statistics - Theory and Methods. 0. (0). p. 1-14. Taylor & Francis

Ali, A., Qadri, S., Mashwani, W.K., Kumam, W., Kumam, P., Naeem, S., Goktas, A., Jamal, F., Chesneau, C., Anam, S., et al.(2020). Machine learning based automated segmentation and hybrid feature analysis for diabetic retinopathy classification using fundus image . Entropy. 22. (5).

(2019). A Comparison of Different Ridge Parameters under Both Multicollinearity and Heteroscedasticity. Süleyman Demirel University Journal of Natural and Applied Sciences.

Volkan Sevinç, Atila Göktaş (2019). A Comparison of Different Ridge Parameters under Both Multicollinearity and Heteroscedasticity . Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi.

Göktaş, A., Eğrioğlu, E., Dağalp, R.(2019). Special Issue: 11th International Statistics Days Conference . Communications in Statistics Case Studies Data Analysis and Applications. 5. (3). p. 167.

(2017). A Comparion of Ordinary Least Squares Regression and Least Squares Ratio via Generated Data. American Journal of Mathematics and Statistics.

Öznur İşçi Güneri and Atilla Göktaş and Uğur Kayalı(2017). Path analysis and determining the distribution of indirect effects via simulation . Journal of Applied Statistics. 44. (7). p. 1181-1210. Taylor & Francis

Güneri, Ö.İ., Göktaş, A., Kayalı, U.(2017). Path analysis and determining the distribution of indirect effects via simulation . Journal of Applied Statistics. 44. (7). p. 1181-1210.

Göktaş, A , Sevinç, V . (2016). TWO NEW RIDGE PARAMETERS AND A GUIDE FOR SELECTING AN APPROPRIATE RIDGE PARAMETER IN LINEAR REGRESSION . Gazi University Journal of Science , 29 (1) , 201-211 . Retrieved from https://dergipark.org.tr/en/pub/gujs/issue/25028/264289 .

Goktas, A., Sevinc, V.(2016). Two New Ridge Parameters and A Guide for Selecting an Appropriate Ridge Parameter in Linear Regression . Gazi University Journal of Science. 29. (1). p. 201-211.

(2014). Time Scale in Least Square Method . Abstract and Applied Analysis.

Yeniay, O., Işçi, Ö., Göktaş, A., Çankaya, M.N.(2014). Time scale in least square method . Abstract and Applied Analysis. 2014.

(2013). Awareness and knowledge levels about HIV/AIDS among high school students in Mugla, Turkey . Global Journal of venereology.

(2013). A comparison of binary logit and probit models with a simulation study . Journal of Social and Economic statistics.

Uǧurlu, N., Bayar, B., Bayar, K., Göktaş, A., Karakaya, I.C., Polat, H.(2012). Development, validity and reliability of the Turkish version of the Hung Postpartum Stress Scale . Journal of Obstetrics and Gynaecology Research. 38. (4). p. 705-713.

Uǧurlu, N., Bayar, B., Bayar, K., Göktas, A., Karakaya, I.Ç., Polat, H.(2012). Erratum: Development, validity and reliability of the Turkish version of the Hung Postpartum Stress Scale (Obstetrics and Gynaecology Research (2012) 38 (705-713)) . Journal of Obstetrics and Gynaecology Research. 38. (10). p. 1274.

Göktaş, A , İşçi, Ö , Atmaca, S , Çankaya, M . (2012). ZAMAN SKALASINDA BOX-COX REGRESYON YÖNTEMİ . Dokuz Eylül Üniversitesi İktisadi İdari Bilimler Fakültesi Dergisi , 27 (1) , 57-70 . Retrieved from https://dergipark.org.tr/en/pub/deuiibfd/issue/22729/242569 .

TÜRKİYE’DE ENFLASYON ORANININ TEMEL BİLEŞENLİ LP NORM YÖNTEMİ İLE TAHMİNİ.

Göktaş, A., Işçi, O.(2011). A comparison and normality test of some measures of association via simulation for rectangular doubly ordered cross tables . Scientific Research and Essays. 6. (30). p. 6297-6310.

(2011). A comparison of the most commonly used measures of association for doubly ordered square contingency tables via simulation. Metodološki zvezki.

Göktaş, A., Işçi, Ö.(2011). A comparison of the most commonly used measures of association for doubly ordered square contingency tables via simulation . Metodoloski Zvezki. 8. (1). p. 17-37.

(2011). Estimation of the Eyeball and Orbital Volume Using the Cavalieri Principle on Computed Tomography Images . Balkan Med J.

Acer, N., Demir, M., Uçar, T., Pekmez, H., Göktaş, A.(2011). Estimation of the eyeball and orbital volume using the cavalieri principle on computed tomography images . Balkan Medical Journal. 28. (2). p. 184-188.

(2010). On the Performance of the Semiparametric Binary Response Model when the True Model is Parametric Logistic . Hacettepe Journal of Mathematics and Statistics.

Akkuş, Ö., Tatlidil, H., Göktaş, A.(2010). On the performance of the semiparametric binary response model when the true model is parametric logistic . Hacettepe Journal of Mathematics and Statistics. 39. (4). p. 583-597.

TÜRKİYE’DE İŞSİZLİK ORANININ TEMEL BİLEŞENLİ REGRESYON ANALİZİ İLE BELİRLENMESİ @{susead302470, journal= {Sosyal Ekonomik Araştırmalar Dergisi}, issn= {2148-3043}, eissn= {2148-3043}, address= {Selçuk Üniversitesi Alaaddin Keykubad Yerleşkesi İktisadi ve İdari Bilimler Fakültesi Selçuklu /KONYA}, publisher= {Selcuk University}, year= {2010}, volume= {10}, pages= {279 - 294}, doi= {}, title= {TÜRKİYE’DE İŞSİZLİK ORANININ TEMEL BİLEŞENLİ REGRESYON ANALİZİ İLE BELİRLENMESİ}, key= {cite}, author= {Göktaş, Atilla and İşçi, Öznur}} . Sosyal Ekonomik Araştırmalar Dergisi.

https://dergipark.org.tr/en/pub/gujs/issue/7406/97063.

(2002). A COMPARISON OF PARTIAL LEAST SQUARES REGRESSION WITH OTHER PREDICTION METHODS. Hacettepe Journal of Mathematics and Statistics.

OTHER

Mermi, S., Göktaş, A., Akkuş, Ö.(2023). How Well Do Ridge Parameter Estimators Proposed so Far Perform in Terms of Normality, Outlier Detection, and MSE Criteria? . Ssrn.