ARTICLES
60. ◊ L. Zhou, E. Ceyhan, and P. Charyyev. “Adversarial Obstacle Placement with Spatial Point Processes for Optimal Path Disruption.” ISPRS (International Society for Photogrammetry and Remote Sensing) International Journal of Geo-Information, 14(10), 374. https://doi.org/10.3390/ijgi14100374, September 2025.
59. o M. Yuval, A. Peleg, E. Ceyhan, D. Tchernov, Y. Loya, A. Bar-Massada, T. Treibitz. Intratentacular budding and population dynamics of zooids in two coral genera. Ecological Informatics, 90, 103293. https://doi.org/10.1016/j.ecoinf.2024.103293, July 2025
58. * T. Kent, V. Sinha, E. Ceyhan, L. Sura, E. Yekeler, M.D. Weiss, M. Albayram, Deep cerebral venous abnormalities in premature babies with GMH-IVH: A single-centre retrospective study, BMJ Paediatrics Open, 7(1):e001853, May 2023.
57. ◊ E. Ceyhan, J.C. Wierman, and P. Xiang. Law of large numbers for a two-dimensional class cover problem. ESAIM: Probability and Statistics, 25:376-407, June 2021.
56. ◊ S. Bahadır and E. Ceyhan. On the number of weakly connected subdigraphs in random kNN digraphs. Discrete & Computational Geometry, 65(1): 116-142, January 2021.
55. ◊ S. Bahadır and E. Ceyhan. A classification of isomorphism-invariant random digraphs. Contributions to Discrete Mathematics, 15(3): 43-74, December 2020.
54. ◊ A. Manukyan and E. Ceyhan. Classification using proximity catch digraphs. Machine Learning, 109(4): 761-811, May 2020.
53. ◊ E. Ceyhan. Domination number of an interval catch digraph family and its use for testing uniformity, Statistics, 54(2): 310-339, January 2020.
52. o G.G. Singh, V. Farjalla, B. Chen, A. Pelling, E. Ceyhan, M. Dominik, E. Alisic, J. Kerr, N. Selin, G. Bassioni, E. Bennett, A. Kemp, and K.M. Chan. Researcher engagement in policy deemed societally beneficial yet unrewarded. Frontiers in Ecology and the Environment, 17(7): 375-382, August 2019. Also available as PeerJ Preprints 6:e26672v2, 2018.
51 ◊ E. Ceyhan. A contingency table approach based on nearest neighbor relations for testing self and mixed correspondence. SORT-Statistics and Operations Research Transactions, 42(2):125-158, July-December 2018.
50. ◊ S. Bahadir and E. Ceyhan. On the number of reflexive and shared nearest neighbor pairs in one-dimensional uniform data. Probability and Mathematical Statistics, 38(1):123-137, July 2018.
49. ◊ E. Ceyhan. Cell-specific and post-hoc spatial clustering tests based on nearest neighbor contingency tables. Journal of the Korean Statistical Society, 46(2):219-245, June 2017.
48. * E. Ceyhan, T. Nishino, K.N. Botteron, M.I. Miller, and J.T. Ratnanather. Analysis of cortical morphometric variability using labeled cortical distance maps. Statistics and Its Interface, 10(2), 313-341, 2017.
47. ◊ E. Ceyhan and S. Bahadir. Nearest neighbor methods for testing reflexivity. Environmental and Ecological Statistics, 24(1):69-108, March 2017.
46. ◊ E. Ceyhan. Density of a random interval catch digraph family and its use for testing uniformity. REVSTAT, 14(3):349-394, November 2016.
45. ◊ E. Ceyhan. Classification of imbalanced data with a geometric digraph family (from arxiv.org). Journal of Machine Learning Research, 17(189):1-40, 2016.
44. ◊ E. Ceyhan. Edge density of new graph types based on a random digraph family. Statistical Methodology, 33: 31-54, August 2016.
43. o M. Asik, F. Tufan, T.S. Akpinar, N. Akalin, E. Ceyhan, N. Tunc, Z.I. Hasiloglu, M.R. Altiparmak, T. Ecder, and S. Albayram. Frequency of nerve root sleeve cysts in autosomal dominant polycystic kidney disease. Balkan Medical Journal, 33(6):652-656, November 2016.
42. o O. Erdem, E. Ceyhan, and Y. Varli. A new correlation coefficient for bivariate time-series data. Physica A: Statistical Mechanics and its Applications, 414:274-284, November 2014.
41. o J.T. Ratnanather, S. Cebron, E. Ceyhan, E. Postell, D.V. Pisano, C.B. Poynton, B. Crocker, N.A. Honeycutt, P.B. Mahon, and P.E. Barta. Morphometric differences in planum temporale in schizophrenia and bipolar disorder revealed by statistical analysis of labeled cortical depth maps. Frontiers in Psychiatry, 5:94, August 2014.
40. ◊ E. Ceyhan. Simulation and characterization of multi-class spatial patterns from stochastic point processes of randomness, clustering and regularity. Stochastic Environmental Research and Risk Assessment (SERRA), 28(5):1277-1306, July 2014.
39. ◊ E. Ceyhan. Segregation indices for disease clustering. Statistics in Medicine, 33(10):1662-1684, May 2014.
38. ◊ E. Ceyhan. Comparison of relative density of two random geometric digraph families in testing spatial clustering. TEST, 23(1):100-134, March 2014. doi:10.1007/s11749-013-0344-4
37. ◊ E. Ceyhan. Testing spatial symmetry using contingency tables based on nearest neighbor relations. The Scientific World Journal, Volume 2014, Article ID 698296, January 2014.
36. o M. Takayanagi, J. Wentz, Y. Takayanagi, D.J. Schretlen, E. Ceyhan, L. Wang, M. Suzuki, A. Sawa, P.E. Barta, J.T. Ratnanather, and N.G. Cascella. Reduced anterior cingulate gray matter volume and thickness in subjects with deficit schizophrenia. Schizophrenia Research, 150(2):484-490, November 2013.
35. o J.T. Ratnanather, C.B. Poynton, D.V. Pisano, B. Crocker, E. Postell, S. Cebron, E. Ceyhan, N.A. Honeycutt, P.B. Mahon, and P.E. Barta. Morphometry of superior temporal gyrus and planum temporale in schizophrenia and psychotic bipolar disorder. Schizophrenia Research, 150(2):476-483, November 2013.
34. * E. Ceyhan, T. Nishino, D. Alexopoulos, R.D. Todd, K.N. Botteron, M.I. Miller, and J.T. Ratnanather. Censoring distances based on labeled cortical distance maps in cortical morphometry. Frontiers in Neurology, vol 4, article 155: 1-16, October 2013.
33. * E. Ceyhan, K. Ertugay, and S. Duzgun. Exploratory and inferential methods for spatio-temporal analysis of residential fire clustering in urban areas. Fire Safety Journal, 58:226-239, May 2013.
32. * A. Coskun, E. Ceyhan, T.C. Inal, M. Serteser, and I. Unsal. The comparison of parametric and nonparametric bootstrap methods for reference interval computation in small sample size groups. Accreditation and Quality Assurance, 18(1):51-60, January 2013.
31. ◊ V. Aksakalli and E. Ceyhan. Optimal obstacle placement with disambiguations. Annals of Applied Statistics, 6(4):1730-1774, December 2012.
30. o S. Unel, M. Yılmaz, S. Albayram, Z. Işık, E. Ceyhan, H. Işıldak, M. Teixido, Y. Savaş, and A. Kiris. Anastomoses of the vestibular, cochlear, and facial nerves. Journal of Craniofacial Surgery, 23(5):1358-1361, September 2012.
29. * E. Ceyhan, F. Xu, U.A. Gurkan, A.E. Emre, E.S. Turalı, R. El Assal, A. Açıkgenc, C.M. Wu, and U. Demirci. Prediction and control of number of cells in microdroplets by stochastic modeling. Lab on a Chip, 12(22): 4884-4893, October 2012.
28. * E. Ceyhan, M.F. Beg, C. Ceritoğlu, L. Wang, J.C. Morris, J.G. Csernansky, M.I. Miller, and J.T. Ratnanather. Metric distances between hippocampal shapes indicate different rates of change over time in nondemented and demented subjects. Current Alzheimer Research, 9(8): 972-981, October 2012.
27. ◊ E. Ceyhan. The distribution of the relative arc density of a family of interval catch digraph based on uniform data. Metrika, 75(6):761-793, July 2012.
26. ◊ E. Ceyhan. An investigation of new graph invariants related to the domination number of random proximity catch digraphs. Methodology and Computing in Applied Probability,14(2): 299-334, April 2012.
25. o S. Unel, M. Yılmaz, S. Albayram, A. Kiris, Z. Işık, E. Ceyhan, H. Işıldak, Y. Savaş, and Z. Keser. A radiological study on the topographical relationships between the vestibular, cochlear and facial nerves. The Eurasian Journal of Medicine, 44(1):6-12, January 2012.
24. o S.J. Moon, E. Ceyhan, U.A. Gurkan, and U. Demirci. Statistical modeling of single target cell encapsulation. PLoS ONE, 6(7): e21580. July 2011.
23. o S. Albayram, S. Saip, Z.I. Haşıloğlu, M. Teke, E. Ceyhan, M. Tutuncu, H. Selcuk, A. Kına, and A. Siva. Evaluation of parenchymal neuro-Behcet disease by using susceptibility-weighted imaging. American Journal of Neuroradiology, 32(6):1050-1055, June-July 2011.
22. * E. Ceyhan, M.F. Beg, C. Ceritoğlu, L. Wang, J.C. Morris, J.G. Csernansky, M.I. Miller, and J.T. Ratnanather. Quantization and analysis of hippocampal morphometric changes due to dementia of Alzheimer type using metric distances based on large deformation diffeomorphic metric mapping. Computerized Medical Imaging and Graphics, 35(4): 275-293, April 2011.
21. ◊ E. Ceyhan. Spatial clustering tests based on domination number of a new family of random digraphs. Communications in Statistics - Theory and Methods, 40(8): 1363-1395, March 2011.
20. * E. Ceyhan, M. Hosakere, T. Nishino, J. Alexopoulos, R.D. Todd, K.N. Botteron, M.I. Miller, and J.T. Ratnanather. Statistical analysis of cortical morphometrics using pooled distances based on labeled cortical distance maps. Journal of Mathematical Imaging and Vision, 40(1): 20-35, March 2011.
19. o Z. I. Haşıloğlu, S. Albayram, H. Selcuk, E. Ceyhan, S. Delil, B. Arkan, and L. Baskoy. Cerebral microhemorrhages detected by susceptibility-weighted imaging in amateur boxers. American Journal of Neuroradiology, 32(1):99-102, January 2011.
18. ◊ E. Ceyhan. Extension of one-dimensional proximity regions to higher dimensions. Computational Geometry: Theory and Applications, 43(9):721-748, November 2010.
17. ◊ E. Ceyhan. On the use of nearest neighbor contingency tables for testing spatial segregation. Environmental and Ecological Statistics, 17(3):247-282, September 2010.
16. ◊ E. Ceyhan. Directional clustering tests based on nearest neighbour contingency tables. Journal of Nonparametric Statistics, 22(5):599-616, July 2010.
15. ◊ E. Ceyhan. Exact inference for testing spatial patterns by nearest neighbor contingency tables. Journal of Probability and Statistical Sciences, 8(1):45-68, February 2010.
14. ◊ E. Ceyhan. New tests of spatial segregation based on nearest neighbor contingency tables. Scandinavian Journal of Statistics, 37(1):147-165, February 2010.
13. ◊ E. Ceyhan and C.L. Goad. A comparison of analysis of covariate-adjusted residuals and analysis of covariance. Communications in Statistics - Simulation and Computation, 38(10):2019-2038, November 2009.
12. ◊ E. Ceyhan. Overall and pairwise segregation tests based on nearest neighbor contingency tables. Computational Statistics & Data Analysis, 53(8):2786-2808, June 2009.
11. ◊ E. Ceyhan. Class-specific tests of segregation based on nearest neighbor contingency tables. Statistica Neerlandica, 63(2):149-182, May 2009.
10. ◊ E. Ceyhan. The distribution of the domination number of class cover catch digraphs for non-uniform one-dimensional data. Discrete Mathematics, 308(23):5376-5393, December 2008.
9. o N. Penumetcha, B. Jedynak, M. Hosakere, E. Ceyhan, K.N. Botteron, and J.T. Ratnanather. Segmentation of arteries in MPRAGE images of the ventral medial prefrontal cortex. Computerized Medical Imaging and Graphics, 32(1):36-43, January 2008.
8. o M. Halac, S. Albayram, E. Ceyhan, H. Ozer, I. Doğan, S. Sağer, and I. Uslu. Is early bladder activity in radionuclide cisternography an indirect sign of spontaneous intracranial hypotension or sequence of lumbar puncture? Clinical Nuclear Medicine, 32(11):850-853, November 2007.
7. o M. Kantarci, N. Ceviz, S. Sevimli, U. Bayraktutan, E. Ceyhan, C. Duran, A. Karaman, I. Durur, and A. Okur. Diagnostic performance of multidetector computed tomography for detecting aorto-ostial lesions compared with catheter coronary angiography. Journal of Computer Assisted Tomography, 31(4), 595-599, July/August 2007.
6. o M. Zhi, J.T. Ratnanather, E. Ceyhan, A.S. Popel, and W.E. Brownell. Hypotonic swelling of salicylate-treated cochlear outer hair cells. Hearing Research, 228(1-2):95-104, June 2007.
5. ◊ E. Ceyhan, C.E. Priebe, and D.J. Marchette. A new family of random graphs for testing spatial segregation. Canadian Journal of Statistics, 35(1):27-50, February 2007.
4. ◊ E. Ceyhan and C.E. Priebe. On the distribution of the domination number of a new family of parameterized random digraphs. Model Assisted Statistics and Applications, 1(4):231-255, 2006.
3. o F. Alper, M. Akgun, M. Kantarci, A. Eroğlu, E. Ceyhan, O. Onbaş, C. Duran, and A. Okur. Demonstration of vascular abnormalities compressing esophagus by MDCT. European Journal of Radiology, 59(1):82-87, July 2006.
2. ◊ E. Ceyhan, C.E. Priebe, and J.C. Wierman. Relative density of the random r-factor proximity catch digraphs for testing spatial patterns of segregation and association. Computational Statistics & Data Analysis, 50(8):1925-1964, April 2006.
1. ◊ E. Ceyhan and C.E. Priebe. The use of domination number of a random proximity catch digraph for testing spatial patterns of segregation and association. Statistics & Probability Letters, 73(1), 37-50, June 2005.
Some of the above articles and associated technical reports are posted at arXiv.org (http://front.math.ucdavis.edu/).
The articles # 7, 28, 29, 33, 35, 36, 40, 42, 44 are featured in the BUTTER Platform of NewsRx service.
Discussion on the articles
4- "How to find an appropriate clustering for mixed-type variables with application to socio-economic stratification, C. Hennig and T. F. Liao". Journal of Royal Statistical Society, Series C (Applied Statistics), 62(3): 345, May 2013.
3- "Catching up faster by switching sooner: a predictive approach to adaptive estimation with an application to the AIC-BIC dilemma, T. van Erven and Peter Grünwald". Journal of Royal Statistical Society, Series B (Statistical Methodology), 74(3): 403, June 2012.
2- "Optimum design of experiments for statistical inference, S. G. Gilmour and L. A. Trinca". Journal of Royal Statistical Society, Series C (Applied Statistics), 61(3): 379-380, May 2012.
1- "Vignettes and health systems responsiveness in cross-country comparative analyses, N. Rice, S. Robone, and P.C. Smith". Journal of Royal Statistical Society, Series A (Statistics in Society), 175(2): 361-362, April 2012.
2. E. Ceyhan. Student Perspectives on AI in Education: A
Survey and Reflection. In AI in Teaching and Learning Showcase (Link
to Contribution). Virginia Broffitt Kunzer & DeElla Wiley (Eds.). Auburn
University Biggio Center, March 2025.
1. E. Ceyhan. Closing educational gaps with artificial intelligence: A pathway to inclusivity and innovation (Link to Contribution). In R. Abou Assi & J. Curtiss (Eds.), GYA (Global Young Academy) Connections (Issue 13, pp. 18–23). https://doi.org/10.26164/GYA_01269, September 2025
2- Proximity Catch Digraphs: Auxiliary Tools, Properties, and Applications (based on PhD thesis), VDM Verlag, Saarbrücken, Germany. ISBN:978-3-639-19063-2, 2009.
1- Correcting for Covariates: Ratios, Residual Analysis, and ANCOVA (based on Masters thesis), VDM Verlag, Saarbrucken, Germany. ISBN:978-3-639-19607-8, 2009.
24- T. Kent, V. Sinha, E. Ceyhan, L. Sura, M.D. Weiss, M.S. Albayram. Deep Cerebral Venous Anomalies in Premature Babies with GMH-IVH: an SWI MRI retrospective study, American Society of Neuroradiology Annual Meeting, ASNR23, Chicago, IL, April 29-May 3, 2023. (Published in ASNR23 Abstract Proceedings.)
23- V. Aksakalli, A.F. Alkaya, D. Oz, R. Algin, and E. Ceyhan. Performance evaluation of an exact method for the obstacle neutralization problem. Proceedings of the Sixth International Conference on Industrial Engineering and Operations Management, Kuala Lumpur, Malaysia, March 8-10, 2016.
22- E. Ceyhan. Pairwise and other post-hoc tests of spatial clustering based on NNCTs. (CPS428). Proceedings of the 60th World Statistics Congress, Rio de Janeiro, Brazil, July 26-31, 2015.
21- A. Manukyan and E. Ceyhan. An assessment of CCP Approach in statistical learning (CPS351). Proceedings of the 60th World Statistics Congress, Rio de Janeiro, Brazil, July 26-31, 2015.
20- Invited Talk, E. Ceyhan. Indices of segregation for disease clustering. IASSL 2014 International Conference: Statistics and Society in the New Information Age: Challenges and Opportunities, Colombo, Sri Lanka, December 28-30, 2014. (Refereed abstracts volume).
19- E. Ceyhan. Testing spatial clustering using relative density of two random geometric digraph families. Proceedings of the 59th World Statistics Congress (Session STS072), Hong Kong, China, August 25-30, 2013, pp. 2528–2533.
18- V. Aksakalli and E. Ceyhan. The use of spatial graphs for optimal obstacle placement: A study on impact of the clutter spatial distribution. Proceedings of the 59th World Statistics Congress (Session STS072), Hong Kong, China, August 25-30, 2013, pp. 2510–2521.
17- S. Albayram, S. Saip, Z.I. Haşıloğlu, M. Teke, E. Ceyhan, M. Tutuncu, H. Selcuk, A. Kına, and A. Siva. Evaluation of parenchymal neuro-Beh¸cet disease using susceptibility-weighted imaging (S-65) Proceedings of the 46th National Neurology Congress, Antalya, Turkey, p. 36, December 4-9, 2010.
16- S. Unel, S. Albayram, E. Ceyhan, N. Tunc, S. Aydın, Y. Savaş, A. Kırış, Z. Işık, and Ş. Odabaşı. Evaluation of Anastomoses Between the 7th and 8th Cranial Nerves in the Internal Auditory Canal and Cerebellopontine Angle Using 3D Balanced Fast Field Echo MRI. Proceedings (Abstract Book) of the TURKRAD 2010, 31st National Radiology Congress, Antalya, Turkey, November 7-12, 2010.
15- S. Albayram, M. Asık, E. Ceyhan, Z. I¸sık, F. Tufan, N. Akalın, N. Tun¸c, H. Ozer, M. Altıparmak, and T. Ecder. Frequency of nerve root sleeve cysts in autosomal dominant polycystic kidney disease. Proceedings of the ASNR 48th Annual Meeting & NER Foundation Symposium (Abstracts), Boston, MA, USA, May 15-20, 2010.
14- S. Albayram, M. Akan, E. Ceyhan, D. Gurbuz, Y. Savaş, and A. Kırış. An evaluation of diffusion tensor changes in the brain ischemia in hyperacute, acute, and subacute stages. Proceedings of the TURKRAD 2009, 30th National Radiology Congress, Antalya, Turkey, ¨ November 4-9, 2009 [won the second best oral presentation award among 1500 presentations].
13- E. Ceyhan, C.E. Priebe, and D.J. Marchette. The use of central similarity proximity catch digraphs for testing multivariate spatial patterns. 57th Session of the ISI, Durban, South Africa, August 16-22, 2009.
12- S. Albayram, M. Akan, E. Ceyhan, D. Gurbuz, and Y. Savaş. Evaluation of the anisotropy of the water diffusion tensor in hyperacute, acute and subacute stages of brain ischemia. Proceedings of the ASNR (American Society of Neuroradiology) 47th Annual Meeting, Vancouver, British Columbia, Canada, May 16-21, 2009.
11- E. Ceyhan. Application of multivariate spatial pattern tests for ecological data analysis. Proceedings of the 18th Statistical Research Symposium, TUIK Yayınları, Ankara, May 7–8, 2009. ISBN 978-975-19-4689-8. (Ed. Reat Kasap).
10- E. Ceyhan. The asymptotic distribution of the domination number of proximity catch digraphs. Abstracts booklet, 21st National Mathematics Symposium, Istanbul, Turkey, September 1-4, 2008.
9- E. Ceyhan. QR-adjustment for clustering tests based on nearest neighbor contingency tables. Proceedings (Abstract Book) of HDM-2008 — International Conference on Multivariate Statistical Modelling & High Dimensional Data Mining, Kayseri, Turkey, June 19-23, 2008.
8- E. Ceyhan. Application of univariate spatial pattern tests for ecological data analysis. Proceedings of the 18th Statistical Research Symposium (E-Government and Statistics), TUIK Yayınları, Ankara, May 8-9, 2008, ISBN: 978-975-19-4475-7. (Editors: Resat Kasap, et al.).
7- E. Ceyhan, R.C. Olken, L. Fong, T.N. Tasky, M.K.
Hurdal, M.F. Beg, M.E. Martone, and J.T. Ratnanather. Modeling metric
distances of dendrite spines of mice based on morphometric measures.
Proceedings of the International Symposium on Health Informatics and
Bioinformatics (HIBIT’07), In: L. E. Akman, N. Baykal, T. Can, M.,U. E. Iscan,
and U. E. Mumcuoglu (eds.), Antalya, Turkey, April 30-May 2, 2007.
6- E. Ceyhan. Edge correction for cell- and class-specific
tests of segregation based on nearest neighbor contingency tables. Proceedings
of the International Conference on Environment: Survival and Sustainability
(ESS2007), Near East University, Nicosia, Cyprus,
February 19-24, 2007.
5- E. Ceyhan. Edge correction for segregation tests based on nearest neighbor contingency tables. Proceedings of the Applied Statistics 2007 International Conference (AS2007), Ribno (Bled), Slovenia, September 23–26, 2007. Ljubljana: Statistical Society of Slovenia. Editors: Gaj Vidmar, Janez Stare. ISBN 978-961-90314-8-3.
4- E. Ceyhan. Edge correction for exact tests on nearest neighbor contingency tables for testing spatial segregation. In JSM Proceedings, Section on Statistics and the Environment. Alexandria, VA: American Statistical Association, 2007. (CD-ROM). [Presented at JSM, Salt Lake City, UT, July 29–August 2, 2007.]
3- E. Ceyhan, M. Hosakere, T. Nishino, J. Alexopoulos, R.D. Todd, K.N. Botteron, M.I. Miller, and J.T. Ratnanather. Statistical analysis of morphometric measures based on labeled cortical distance maps. Proceedings of ISPA 2007 — 5th International Symposium on Image and Signal Processing and Analysis, Istanbul, Turkey, September 27-29, 2007, pp. 13–18. IEEE, 2007. ISBN 978-953-184-116-0. (IEEE Cat. No. CFP07504-PRT)
2- E. Ceyhan, L. Fong, T.N. Tasky, M.K. Hurdal, M.F. Beg, M.E. Martone, and J.T. Ratnanather. Type-specific analysis of morphometry of dendrite spines of mice. Proceedings of ISPA 2007 — 5th International Symposium on Image and Signal Processing and Analysis, Istanbul, Turkey, September 27–29, 2007, pp. 7–12. IEEE, 2007. ISBN 978-953-184-116-0. (IEEE Cat. No. 07EX1763C)
1- E. Ceyhan and C.E. Priebe, Central similarity proximity maps in Delaunay tessellations. In JSM Proceedings, Section on Statistical Computing. Alexandria, VA: American Statistical Association, 2003 (CD-ROM), pp. 840–845. [Presented at JSM, San Francisco, CA, August 3–7, 2003.]
56. E. Ceyhan, “From MSCA Fellow to Institute Leadership - and back to
Academia.” Connecting
Minds Across Continents: MCAA North America Meeting
2025, Chicago, IL, November 6-7, 2025
55. L. Zhou and E. Ceyhan, “Dynamic Path Planning in Stochastic Environments.” INFORMS Annual Meeting, Atlanta, GA, October 26–29, 2025.
54. L. Zhou and E. Ceyhan, “Optimizing Navigation in Uncertain Terrain with Spatially Correlated Obstacles”, Joint Statistical Meeting (JSM), Nashville, TN, August 2-7, 2025.
53. J. Eckert and E. Ceyhan, “An Ensemble Approach for Graph-Based Classification”, Joint Statistical Meeting (JSM), Nashville, TN, August 2-7, 2025.
52.M. Lanius, E. Ceyhan, and S. Bowers, "From Hesitancy to
Engagement: Cultivating Student Mindsets for Responsible AI Use in Higher
Education", International Perspectives on University Teaching and Learning
(IPUTL), Orlando, Florida, June 23-25, 2025.
51. J. Eckert and E. Ceyhan. "An Ensemble Framework
Based on Geometric Digraphs Classification". Classification Society Annual
Meeting, Ottawa, Ontario, Canada, June 17-19, 2025.
50. M. Lanius and E. Ceyhan, "Mute your mic if you
need to cry! Exploring qualitative approaches to data analysis through a study
of undergraduates' emergency remote learning experiences". Graduate Student
Seminar at Department of Math & Stat, Auburn University, April 2, 2025
48. M. Lanius, E. Ceyhan, S. Bowers, "Me, Myself, and AI: On social-emotional integration of AI in learning experiences for graduate and undergraduate students", 2025 Joint Mathematics Meetings (JMM 2025), Seattle, WA, January 8-11, 2025.
47. Invited Session Talk, "An Overview of Optimizing Network Navigation in Stochastic Obstacle Scene Problem". 2024 INFORMS Annual Meeting, Seattle, WA, October 20-23, 2024.
46. Presentation, Optimal Pathfinding and Obstacle Placement in Stochastic Environments, Joint ATD/AMPS PI Workshop, Alexandria/Carlyle, VA, October 07-09, 2024.
45. N. Billor and E. Ceyhan. Future of Data Science: Enhanced Education and Strategic Industry Alliances, Outreach and Engaged Scholarship Symposium, Auburn, AL, September 3-4, 2024.
44. R. Shi and E. Ceyhan. Outlier Detection with Cluster Catch Digraphs, ICORS (International Conference on Robust Statistics) meets DSSV (Conference on Data Science, Statistics and Visualisation) 2024, Fairfax, Virginia, Jul 29 - Aug 1, 2024.
43. (lightning talk & poster) R. Shi, N. Billor and E. Ceyhan. Outlier Detection with Random Geometric Digraphs, 2024 Symposium on Data Science & Statistics, Richmond, Virginia, June 4-7, 2024.
42. (lightning talk & poster) L. Zhou and E. Ceyhan. Stochastic Obstacle Scene Problem with Correlated Obstacles, 2024 Symposium on Data Science & Statistics, Richmond, Virginia, June 4-7, 2024.
41. Invited Talk, Navigation Algorithms for Optimal Pathfinding in Stochastic Obstacle Scene Problem, The 9th Workshop on Biostatistics and Bioinformatics, Georgia State University, Atlanta, May 03-05, 2024.
40. R. Shi, N. Billor, and E. Ceyhan. Outlier Detection with Cluster Catch Digraphs, Auburn's 2024 Research Symposium, March 26, 2024.
39. J. Eckert and E. Ceyhan. Adaptive Hybrid Learning with Geometric Catch Digraphs, Graduate Student Research Forum, Auburn University, Auburn, AL, March 22, 2024.
38- P. Charyyev, L. Zhou, and E. Ceyhan. Dependence of the Traversal Length of a Disambiguating Agent on the Obstacle Pattern: From Clustering to Regularity, International Conference on Data Science ICDS2023, Santiago de Chile, November 8-10, 2023.
37. (presentation & poster) F.L. Bayisa, C.L. Seals, H.J. Leeper, E. Ceyhan, and T.D. Steury, (2023). Home Range and Spatial interaction modelling of black bears. Symposium on Data Science and Statistics (SDSS2023), St. Louis, Missouri, May 23-26, 2023.
36. L. Mahalingappa, N. Polat, and E. Ceyhan, Evolution of quantitative methodologies in SLA research: Snapshot of 20 years across three major journals. American Association for Applied Linguistics (AAAL) Annual Conference, Portland, OR, March 17-21, 2023.
35. E. Ceyhan and P. Charyyev. Comparison of various algorithms in optimal obstacle placement with disambiguation problem. International Conference on Advances in Interdisciplinary Statistics and Combinatorics, Greensboro, NC, October 7-9, 2022.
34. A. Pearson and E. Ceyhan. Domain-dependent classification with geometric digraphs. Joint Statistical Meeting, Washington DC, August 6-11, 2022.
33. SMAC Talk, Imbalanced classification based on a geometric graph family, Department of Statistics, Penn State, State College, PA, March 19, 2021.
32. Neuroimaging Journal Club Seminar, Two algorithms to quantify and analyze brain morphometry, February 21, 2020.
31. Graduate Student Seminar, Two algorithms to quantify brain morphometry and its analysis, March 18, 2020.
30. Graduate Student Seminar, Optimal obstacle placement with disambiguations in presence of uniform clutter, October 7, 2020.
29. A. Manukyan and E. Ceyhan. Statistical learning using geometric digraph families. International Conference on Information Complexity and Statistical Modeling in High Dimensions with Applications, Cappadocia, Turkey, May 18-21, 2016.
28. IPS Presentation, Analysis of cortical thickness with medical imaging data of very high and varying dimensions per subject. 9th Conference of the Asian Regional Section of the IASC (IASC-ARS 2015), Singapore, December 17-19, 2015.
27. S. Bahadir and E. Ceyhan. Classification of isomorphism-invariant random digraphs. IMBM Workshop on Graph Theory and Its Applications, Istanbul, Turkey, November 27-28, 2015.
26. Invited Talk, Analysis of high dimensional brain imaging data: Challenges and possible solutions. IWSDM 2015, Istanbul, Turkey, July 21-22, 2015.
25. S. Bahadir and E. Ceyhan. k-Nearest neighbor contingency table analysis for several classes. European Meeting of Statisticians, Amsterdam, Netherlands, July 6-10, 2015.
24- P. Charyyev, E. Ceyhan, and V. Aksakalli. Optimal obstacle placement with disambiguation problem. European Meeting of Statisticians, Amsterdam, Netherlands, July 6-10, 2015.
23. Department Seminar, Domination number of a family of random geometric digraphs and its application to spatial clustering, Department of Applied Mathematics and Statistics, Johns Hopkins University, Baltimore, MD, USA, November 7, 2013.
22. A new family of random geometric graphs: Theory and applications [also presented as a poster]. TWAS 12th General Conference and 23rd General Meeting, Tianjin, China, September 18-21, 2012.
21. Invited Talk, Quantization and analysis of morphometric changes in brain tissues due to neuro-degenerative diseases. Third International Workshop on Statistical Mechanics and Dynamical Systems, Turunc/Marmaris, Turkey, August 27-September 2, 2012.
20. V. Aksakalli and E. Ceyhan. Optimal obstacle clustering patterns with disambiguations, 8th World Congress in Probability and Statistics, Istanbul, Turkey, July 9-14, 2012.
19. Presentation, Statistical tests, univariate analysis, parametric tests, nonparametric tests, and ANOVA methods for medical practice, Summer Course on Research Methodology in Medical Sciences, Koc University, Istanbul, Turkey, July 19-23, 2010; July 18-22, 2011.
18. Seminar, Relative density of random proximity catch digraphs: Theory and applications, Department of Industrial Engineering, Cankaya University, December 24, 2010.
17. Special Mathematics Seminar, Domination number of random proximity catch digraphs: Theory and applications (in Turkish: "Yakınlık yOnlu cizgelerinin baskınlık sayısı: Teori ve uygulamalar"), IMBM İstanbul Center for Mathematical Sciences - Discrete Mathematics Meetings, Boğazici University, November 26, 2010.
16. Mathematics Seminar, The asymptotic distribution of the domination number of a geometric digraph family (in Turkish: "Geometrik bir yonlu cizge ailesinin baskınlık sayısının asimptotik dağılımı"), Department of Mathematical Engineering, Istanbul Technical University, November 12, 2010.
15. Presentation, The distribution of the domination number of a family of random catch digraphs based on one-dimensional data, The Fifth International Workshop in Applied Probability (IWAP 2010), Universidad Carlos III de Madrid, Madrid, Spain, July 5-8, 2010.
14. Mathematics Seminar, A graph invariant of a random digraph family for testing multivariate spatial interaction, Department of Mathematics, Izmir University of Economics, May 7, 2010.
13. Graduate Learning Seminar, A short synopsis on random graphs, spatial point patterns, and image analysis, Department of Mathematics, Koc University, November 2, 2009.
12. Invited Seminar, Some nearest neighbor methods for detection of disease clustering, Session ES28, Small area estimation 1, Second Workshop of the ERCIM Working Group on Computing & Statistics, Limassol, Cyprus, October 29-31, 2009.
11. Statistics Seminar, Random proximity catch digraphs: Theory and applications - II, Department of Statistics, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil, September 25, 2009.
10. Probability Seminar, Random proximity catch digraphs: Theory and applications - I, Institute of Mathematics and Statistics, Universidade de Sao Paulo, Sao Paulo, Brazil, September 24, 2009.
9. Mathematics Seminar, Random Geometric Graphs and their Applications, Suleyman Demirel University, Isparta, Turkey, March 3, 2009.
8. Presentation, The asymptotic distribution of the domination number of proportional edge proximity catch digraphs. The 7th World Congress in Probability and Statistics, Singapore, July 14-19, 2008.
7. Presentation, Extension of one-dimensional proximity maps to higher dimensions (in Turkish: "Tek-boyutlu yakınlık fonksiyonlarının daha ust boyutlara genelleştirilmesi"). VI. Ulusal Geometri Sempozyumu (VI. National Geometry Symposium), Bursa, Turkey, July 1-4, 2008.
6. Invited Talk, Spatial point pattern analysis for astronomical data. 15th Istanbul Statistical Physics Symposium, Istanbul, Turkey, June 19-21, 2008.
5. Sci-Tech Seminar, Applying mathematics in quantifying (measuring) the morphometry (shape and size) of brain tissues, Koc University, October 31, 2006.
4. Invited Talk, M. Hosakere and E. Ceyhan. Analysis of ventral medial prefrontal cortex metrics for depression in twins at CIS Seminar Series, Johns Hopkins University, March 1, 2005.
3. Science-Math Seminar, A parameterized family of proximity catch digraphs in Delaunay tessellations and its use in testing spatial point patterns, Koc University, February 8, 2005.
2. Invited Talk, The relative density of r-factor proportional-edge proximity catch digraphs and its application to spatial point patterns at Statistics Colloquium, George Mason University, January 28, 2005.
1. Student Seminar, An investigation of proximity catch digraphs in Delaunay tessellations, Johns Hopkins University, October 1, 2004.
Posters Published in Proceedings
14- E. Ozel and E. Ceyhan. The distribution of fractional domination number of a random digraph family based on one-dimensional uniform data. In PROBASTAT 2011: Abstracts (eds. R. Harman, J. Somorcık, V. Witkovsky). Bratislava: Institute of Measurement Science, Slovak Academy of Sciences, 2011, p. 36. (6th International Conference on Probability and Statistics, Smolenice Castle, Slovakia, July 4–8, 2011.)
13- S. Unel, S. Albayram, E. Ceyhan, N. Tunc, S. Aydın, Y.
Savaş, A. Kırış, Z. Işık, and Ş. Odabaşı. Evaluation of Anastomoses Between
the 7th and 8th Cranial Nerves in the Internal Auditory Canal and
Cerebellopontine Angle Using 3D Balanced Fast
Field Echo Sequence in
Magnetic Resonance Imaging. Proceedings (Abstracts), TURKRAD 2010 — 31st
National Radiology Congress, Rixos Sungate, Antalya, Turkey, Nov 7–12, 2010.
12- J. Sohn, B. Crocker, D.V. Pisano, C.B. Poynton, N.A. Honeycutt, E. Ceyhan, P.E. Barta, and J.T. Ratnanather. Structural changes of temporal lobe regions in bipolar disorder and schizophrenia patients. Abstracts of the 16th Annual Meeting of the Organization for Human Brain Mapping (OHBM 2010), Barcelona, Spain, June 6–10, 2010 — published in NeuroImage, Supplement 1 (July 2010).
11- R. Pribik, K. Alpert, N. Mohan, J. Sohn, C.E. Priebe, E. Ceyhan, E. Cochran, W. Wen, M.F. Beg, L. Wang, and J.T. Ratnanather. Automated labeled cortical distance mapping pipeline for analyzing regional structures. Abstracts of the 16th Annual Meeting of the Organization for Human Brain Mapping (OHBM 2010), Barcelona, Spain, June 6–10, 2010 — published in NeuroImage, Supplement 1 (July 2010).
10- S. Unel, S. Albayram, E. Ceyhan, S. Aydın, D. Gurbuz,
N. Hatipoğlu, Y. Savaş, S. Odabaşı, and A. Kırış. Determining the
topographical relationship of the seventh and eighth nerves in the
cerebellopontine cistern and internal auditory canal in living humans using 3D
CISS MR imaging. Abstract, Proceedings of the ASNR 48th Annual Meeting & NER
Foundation Symposium, Boston, MA, May 15–20, 2010.
9- S. Unel, S. Albayram, E. Ceyhan, S. Aydın, D. Gurbuz, N. Hatipoğlu, Y. Savaş, S. Odabaşı, and A. Kırış. Determining the anastomosis of the nerves in the internal auditory canal and cerebellopontine cistern in living humans using 3D CISS MR imaging. Abstract, Proceedings of the ASNR 48th Annual Meeting & NER Foundation Symposium, Boston, MA, May 15–20, 2010.
8- S. Aydın, S. Albayram, E. Ceyhan, D. Gurbuz, S. Unel, F. Kantarcı, Y. Savaş, and A. Kırış. Quantitative and qualitative comparison of 0.5M gadoterate meglumine and 1M gadobutrol in contrast-enhanced MR angiography of carotid arteries. Abstract, Proceedings of the ASNR 48th Annual Meeting & NER Foundation Symposium, Boston, MA, May 15–20, 2010.
7- E. Ceyhan. New multi-class and directional clustering tests based on nearest neighbor contingency tables. Poster abstract in ISNI 2008: Scientific Programme and Proceedings, International Seminar on Nonparametric Inference, University of Vigo, Spain, November 5–7, 2008.
6- E. Ceyhan, C.B. Poynton, A. Qui, P.E. Barta, and M.I. Miller. Statistical analysis of gender, laterality, and diagnosis effect on planum temporale. Abstracts of the 12th Annual Meeting of the Organization for Human Brain Mapping (OHBM 2006), Florence, Italy, June 11–15, 2006. Published in NeuroImage 31 (Suppl 1): S29–S185, 2006.
5- E. Ceyhan, M. Hosakere, J. Alexopoulos, T. Nishino, C. Babb, J.T. Ratnanather, R. Todd, K.N. Botteron, and M.I. Miller. Analysis of ventral medial prefrontal cortex metrics for depression in twins. Abstracts of the 11th Annual Meeting of the Organization for Human Brain Mapping (OHBM 2005), Toronto, Canada, June 12–16, 2005. Published in NeuroImage 26 (Suppl 1), 2005.
4- L. Wang, M. Hosakere, E. Ceyhan, G. Kaplan, M. Gado, J.T. Ratnanather, J.G. Csernansky, and M.I. Miller. Surface area, volume and cortical thickness metrics of the cingulate gyrus in schizophrenia. Abstracts of the 11th Annual Meeting of the Organization for Human Brain Mapping (OHBM 2005), Toronto, Canada, June 12–16, 2005. Published in NeuroImage 26 (Suppl 1), 2005.
3- M.F. Beg, J.T. Ratnanather, L. Wang, E. Ceyhan, C.E.
Priebe, C. Ceritoğlu, A. Khan, N. Lee, J.G. Csernansky, J. Morris, and M.I.
Miller. Metric distances between hippocampal shapes predict different rates of
shape changes in dementia of Alzheimer type and
nondemented subjects: a
validation study. Abstracts of the 11th Annual Meeting of the Organization for
Human Brain Mapping (OHBM 2005), Toronto, Canada, June 12–16, 2005. Published
in NeuroImage 26 (Suppl 1), 2005.
2- M.F. Beg, R. L. Buckner, B. Fischl, Y. Park, E. Ceyhan, C.E. Priebe, C. Ceritoğlu, A.E. Kolasny, T. Brown, B. Quinn, P. Yu, B. Gold, J.T. Ratnanather, and M.I. Miller. Pattern classification of hippocampal shape analysis in a study of Alzheimer’s disease. Abstracts of the 11th Annual Meeting of the Organization for Human Brain Mapping (OHBM 2005), Toronto, Canada, June 12–16, 2005. Published in NeuroImage 26 (Suppl 1), 2005
1- L. Wang, M. Hosakere, E. Ceyhan, J.T. Ratnanather, G.
Kaplan, M. Gado, J.G. Csernansky, and M.I. Miller. Labeled cortical mantle
distance mapping of the cingulate gyrus in schizophrenia. Abstracts of the
11th Annual Meeting of the Organization for Human Brain
Mapping (OHBM
2005), Toronto, Canada, June 12–16, 2005. Published in NeuroImage 26 (Suppl
1), 2005.
Posters Not Published in Proceedings
14- E. Ceyhan, N. Billor, and M. Lanius. “Empowering Education through Data Science: A Collaborative Initiative by CDSI and PEER”. Auburn University Outreach and Engaged Scholarship Symposium, August 27-28, 2025
13- N. Billor and E. Ceyhan. "CDSI: Advancing Data Science for Innovation in Production Agriculture and Beyond." Harnessing Data Science and AI for Collaborative Advances in Production Agriculture Forum, Auburn, AL, April 21, 2025.
12- L. Zhou and E. Ceyhan. "Stochastic Obstacle Scene Problem with Correlated Obstacles", Joint ATD/AMPS PI Workshop, Alexandria/Carlyle, VA, October 07-09, 2024.
11- L. Zhou and E. Ceyhan. "Stochastic Obstacle Scene Problem with Limited Dynamic Learning Capability", Auburn's 2024 Research Symposium, March 26, 2024.
10- T. Kent, V. Sinha, E. Ceyhan, L. Sura, E. Yekeler, M.D. Weiss, M.S. Albayram. Deep Cerebral Venous Abnormalities in Premature Babies with GMH-IVH: an SWI MRI Retrospective Study, 13th Annual UF College of Medicine Celebration of Research, February 27-28, 2023.
9- A. Pearson and E. Ceyhan. Adaptive and hybrid classification with domain-dependent digraphs. Alabama-Mississippi ASA Chapter Annual Conference, Jackson, MS, April 1, 2022.
8- A. Pearson and E. Ceyhan. A network-based statistical learning method robust to class imbalance. Auburn University Postdoctoral Research Symposium, Auburn, AL, September 2, 2021.
7- E. Ceyhan. Pattern recognition with parameterized random geometric graphs. TWAS 25th General Meeting, Muscat, Oman, October 26-29, 2014.
6- E. Ceyhan. New spatial segregation tests based on nearest neighbor contingency tables. VI International Workshop on Spatio-Temporal Modelling (METMAVI), Guimaraes, Portugal, September 12-14, 2012.
5- E. Ozel and E. Ceyhan. Extensions of domination number and their distribution for random interval catch digraph families. 8th World Congress in Probability and Statistics, Istanbul, Turkey, July 9-14, 2012.
4- Y. Varlı, E. Ceyhan, and O. Erdem. A new correlation coefficient for bivariate time-series data. 3rd International Conference of the ERCIM Working Group on Computing & Statistics (ERCIM 10), London, UK, December 10-12, 2010 [Also at 18th Annual Conference of the Multinational Finance Society, Rome, Italy, June 26-29, 2011].
3- E. Ceyhan. Testing the presence of the bacteria h. influenzae in children after drug treatments using generalized linear mixed models. IASC-ERS Summer School "Computational Aspects in Environmental Statistics", Pamporovo, Bulgaria, September 11, 2009.
2- G.M. Aldridge, J.T. Ratnanather, M.E. Martone, M. Terada, M.F. Beg, L. Fong, E. Ceyhan, A.E. Kolasny, T.J.A. Brown, E.L. Cochran, S.J. Tang, D.V. Pisano, M. Vaillant, M.K. Hurdal, J.D. Churchill, W.T. Greenough, M.I. Miller, and M. H. Ellisman. Semi-automated shape analysis of dendrite spines from animal models of fragile-X and Parkinson's disease using large deformation diffeomorphic metric mapping. Society for Neuroscience Annual Meeting, Washington DC, USA, November 12-16, 2005.
1- J.T. Ratnanather, C. Poynton, E. Ceyhan, A. Osdoit, and D. Boatman. A cortical analysis of the laterality of the planum temporale in hearing, hearing-impaired and central auditory processing disorder subjects. Midwinter Meeting of the Association for Research in Otolaryngology, New Orleans, LA, USA, February 19-24, 2005.
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