Economou Polychronis
Associate Professor of Statistics
Associate Professor of Statistics
Research Interests:
Survival and Reliability Models
Diagnostics Tests
Biased Sampling and Weighted Distributions
Time Series
Statistical quality control
Stochastic optimazation
Big data analysis
Qualifications:
PhD in Statistics (NTUA, 2007)
MSc in Applied Mathematics (NTUA, 2003)
Degree in Mathematics (University of Ioannina, 2001)
Survival and Reliability Models
Diagnostics Tests
Biased Sampling and Weighted Distributions
Time Series
Statistical quality control
Stochastic optimazation
Big data analysis
Qualifications:
PhD in Statistics (NTUA, 2007)
MSc in Applied Mathematics (NTUA, 2003)
Degree in Mathematics (University of Ioannina, 2001)
RECENT PUBLICATIONS:
2025
I. Kinchin, R.L. Fitzpatrick, G. Papageorgiou, J. Kane, P. Alexopoulos, P. Economou, J. Conlon, P. Grigorova, K. Greaney and I. Leroi. From data to dialogue towards setting research priorities for Lewy Body Dementia. npj Dementia. Accepted.
P. Alexopoulos, A. Demertzis, P. Biris, P. Economou, E. Frison, P. Dawes and I. Leroi. Practical Approaches to Evaluating Auditory Function in Individuals with Major Neurocognitive Disorders and Hearing Loss in Diverse Contexts. Frontiers in Aging Neuroscience, Accepted.
E. Skamnia, E.S. Bekri and P. Economou. Unraveling Meteorological Dynamics: A Two-Level Clustering Algorithm for Time Series Pattern Recognition with Missing Data Handling. Stats, 8(2):36, 2025.
G. Papageorgiou, E. Skamnia and P. Economou. AI-Assisted Literature Review: Integrating Visualization and Geometric Features for Insightful Analysis. WIREs Data Mining and Knowledge Discovery, 15: e70016, 2025.
I. Biliani, E. Skamnia, P. Economou and I. Zacharias. A novel methodology to correct chlorophyll-a concentrations from satellite data and assess credible phenological patterns. Remote Sensing. 17(7):1156, 2025
G. Papageorgiou, S. Bersimis and P. Economou. Real-time Monitoring of Streaming Text Data by Integrating Text Visualization Techniques and Natural Language. International Journal of Data Science and Analytics, https://doi.org/10.1007/s41060-025-00750-x
P. Alexopoulos, P. Felemegkas, X. Arampatzi, E. Billis, E. Dimakopoulou, P. Economou, G. A. Dimakopoulos, T. Exarchos, M. Frounta, P. Giannakopoulou, K. Kalaitzi, M.-L. Koula, E. Nastou, M. Skondra, P. Sakka, F. Kalligerou, N. Skarmeas, M. Tsatali, M. Krommyda, M. Karala, N. Mastoras, P. Vlamos, M. Yannakoulia, I. Zaganas, M. Karataraki, M. Basta, and C. Lyketsos. Pilot study of the Greek Interventional Geriatric Initiative to Prevent Cognitive Impairment and Disability (GINGER) in individuals with Subjective Cognitive Decline: Paving the Way towards brain health clinics in Greece. Frontiers in Psychiatry, 16, 1514227, 2025.
P. Alexopoulos, C. Bountoulis, E. Katirtzoglou, M. H. Kosmidis, K. Siarkos, M. Yannakoulia, E. Dardiotis, M. Skondra, G. Hadjigeorgiou, R. Perneczky, P. Sakka, E.-Z. Georgiou, M. Charalampopoulou, P. Felemegkas, I. Leroi, A. Batsidis, L. Perna, A. Politis, N. Scarmeas, and P. Economou, The potential of depressive symptoms to identify cognitive impairment in ageing. European Journal of Ageing, 22, 7, 2025.
S. Bersimis, A. Sachlas and P. Economou. Monitoring Defects on Products' Surface by Incorporating Scan Statistics into Process Monitoring Procedures, Quality and Reliability Engineering International, 41: 293-317, 2025.
Batsidis, G. Tzavelas and P. Economou. Inference under multivariate size-biased sampling, Journal of Applied Statistics, https://doi.org/10.1080/02664763.2025.2451972
2024
A. Batsidis, G. Tzavelas and P. Economou. Weighted distributions and two types of size-biased samples when modeling extreme phenomena in the Frechet maximum domain of attraction, Stats, 7, 1392-1404. 2024.
A. Batsidis, G. Tzavelas and P. Economou. Size Biased Frechet Distribution: Properties and Statistical Inference, Journal of Statistical Theory and Applications, 23, 456-479, 2024.
A. Tsatsia, A. Batsidis and P. Economou. Multivariate normality tests with two-step monotone missing data: a critical review with emphasis on the different methods of handling missing values, Journal of Statistical Computation and Simulation, 94(16), 3653-3677, 2024.
S. Karatzas, G. Papageorgiou, V. Lazari, S. Bersimis, A. Fousteris, P. Economou and A. Chassiakos, A Text Analytic Framework for Gaining Insights on the Integration of Digital Twins and Machine Learning for Optimizing Indoor Building Environmental Performance, 100386, 2024.
G. Papageorgiou, P. Economou and S. Bersimis, A Method for Optimizing Text Preprocessing and Text Classification Using Multiple Cycles of Learning with an Application on Shipbrokers Emails. Journal of Applied Statistics, Journal of Applied Statistics, 51(13), 2592-2626, 2024.
K. Skarlatos, G. Papageorgiou, P. Biris, E. Skamnia, P. Economou and S. Bersimis, Ship Engine Model Selection by Applying Machine Learning Classification Techniques Using Imputation and Dimensionality Reduction. Journal of Marine Science and Engineering. 12(1):97, 2024
E.Z. Georgiou, A. Politis, M.H. Kosmidis, M. Yannakoulia, E. Dardiotis, G. Hadjigeorgiou, P. Sakka, N. Scarmeas, P. Economou and P. Alexopoulos, Depressive symptoms in the entire spectrum of cognitive aging in Greece: Evidence from the Hellenic Longitudinal Investigation of Aging and Diet (HELIAD), International Journal of Psychiatry in Clinical Practice, 28(1), 27-34, 2024.
A. Katerelos, P. Alexopoulos, P. Economou, P. Polychronopoulos and E. Chroni, Cognitive function in Amyotrophic Lateral Sclerosis: A cross-sectional and prospective pragmatic clinical study with review of the literature, Neurological Sciences, 45, 2075-2085, 2024
2025
I. Kinchin, R.L. Fitzpatrick, G. Papageorgiou, J. Kane, P. Alexopoulos, P. Economou, J. Conlon, P. Grigorova, K. Greaney and I. Leroi. From data to dialogue towards setting research priorities for Lewy Body Dementia. npj Dementia. Accepted.
P. Alexopoulos, A. Demertzis, P. Biris, P. Economou, E. Frison, P. Dawes and I. Leroi. Practical Approaches to Evaluating Auditory Function in Individuals with Major Neurocognitive Disorders and Hearing Loss in Diverse Contexts. Frontiers in Aging Neuroscience, Accepted.
E. Skamnia, E.S. Bekri and P. Economou. Unraveling Meteorological Dynamics: A Two-Level Clustering Algorithm for Time Series Pattern Recognition with Missing Data Handling. Stats, 8(2):36, 2025.
G. Papageorgiou, E. Skamnia and P. Economou. AI-Assisted Literature Review: Integrating Visualization and Geometric Features for Insightful Analysis. WIREs Data Mining and Knowledge Discovery, 15: e70016, 2025.
I. Biliani, E. Skamnia, P. Economou and I. Zacharias. A novel methodology to correct chlorophyll-a concentrations from satellite data and assess credible phenological patterns. Remote Sensing. 17(7):1156, 2025
G. Papageorgiou, S. Bersimis and P. Economou. Real-time Monitoring of Streaming Text Data by Integrating Text Visualization Techniques and Natural Language. International Journal of Data Science and Analytics, https://doi.org/10.1007/s41060-025-00750-x
P. Alexopoulos, P. Felemegkas, X. Arampatzi, E. Billis, E. Dimakopoulou, P. Economou, G. A. Dimakopoulos, T. Exarchos, M. Frounta, P. Giannakopoulou, K. Kalaitzi, M.-L. Koula, E. Nastou, M. Skondra, P. Sakka, F. Kalligerou, N. Skarmeas, M. Tsatali, M. Krommyda, M. Karala, N. Mastoras, P. Vlamos, M. Yannakoulia, I. Zaganas, M. Karataraki, M. Basta, and C. Lyketsos. Pilot study of the Greek Interventional Geriatric Initiative to Prevent Cognitive Impairment and Disability (GINGER) in individuals with Subjective Cognitive Decline: Paving the Way towards brain health clinics in Greece. Frontiers in Psychiatry, 16, 1514227, 2025.
P. Alexopoulos, C. Bountoulis, E. Katirtzoglou, M. H. Kosmidis, K. Siarkos, M. Yannakoulia, E. Dardiotis, M. Skondra, G. Hadjigeorgiou, R. Perneczky, P. Sakka, E.-Z. Georgiou, M. Charalampopoulou, P. Felemegkas, I. Leroi, A. Batsidis, L. Perna, A. Politis, N. Scarmeas, and P. Economou, The potential of depressive symptoms to identify cognitive impairment in ageing. European Journal of Ageing, 22, 7, 2025.
S. Bersimis, A. Sachlas and P. Economou. Monitoring Defects on Products' Surface by Incorporating Scan Statistics into Process Monitoring Procedures, Quality and Reliability Engineering International, 41: 293-317, 2025.
Batsidis, G. Tzavelas and P. Economou. Inference under multivariate size-biased sampling, Journal of Applied Statistics, https://doi.org/10.1080/02664763.2025.2451972
2024
A. Batsidis, G. Tzavelas and P. Economou. Weighted distributions and two types of size-biased samples when modeling extreme phenomena in the Frechet maximum domain of attraction, Stats, 7, 1392-1404. 2024.
A. Batsidis, G. Tzavelas and P. Economou. Size Biased Frechet Distribution: Properties and Statistical Inference, Journal of Statistical Theory and Applications, 23, 456-479, 2024.
A. Tsatsia, A. Batsidis and P. Economou. Multivariate normality tests with two-step monotone missing data: a critical review with emphasis on the different methods of handling missing values, Journal of Statistical Computation and Simulation, 94(16), 3653-3677, 2024.
S. Karatzas, G. Papageorgiou, V. Lazari, S. Bersimis, A. Fousteris, P. Economou and A. Chassiakos, A Text Analytic Framework for Gaining Insights on the Integration of Digital Twins and Machine Learning for Optimizing Indoor Building Environmental Performance, 100386, 2024.
G. Papageorgiou, P. Economou and S. Bersimis, A Method for Optimizing Text Preprocessing and Text Classification Using Multiple Cycles of Learning with an Application on Shipbrokers Emails. Journal of Applied Statistics, Journal of Applied Statistics, 51(13), 2592-2626, 2024.
K. Skarlatos, G. Papageorgiou, P. Biris, E. Skamnia, P. Economou and S. Bersimis, Ship Engine Model Selection by Applying Machine Learning Classification Techniques Using Imputation and Dimensionality Reduction. Journal of Marine Science and Engineering. 12(1):97, 2024
E.Z. Georgiou, A. Politis, M.H. Kosmidis, M. Yannakoulia, E. Dardiotis, G. Hadjigeorgiou, P. Sakka, N. Scarmeas, P. Economou and P. Alexopoulos, Depressive symptoms in the entire spectrum of cognitive aging in Greece: Evidence from the Hellenic Longitudinal Investigation of Aging and Diet (HELIAD), International Journal of Psychiatry in Clinical Practice, 28(1), 27-34, 2024.
A. Katerelos, P. Alexopoulos, P. Economou, P. Polychronopoulos and E. Chroni, Cognitive function in Amyotrophic Lateral Sclerosis: A cross-sectional and prospective pragmatic clinical study with review of the literature, Neurological Sciences, 45, 2075-2085, 2024
Economou Polychronis
Address:
University of Patras
Department of Civil
Engineering
265 00, Rion-Patras
Greece
Tel: +30 2610 997240
E-mail: peconom@upatras.gr
Address:
University of Patras
Department of Civil
Engineering
265 00, Rion-Patras
Greece
Tel: +30 2610 997240
E-mail: peconom@upatras.gr
University of Patras
Department of
Civil Engineering
Civil Engineering
School of Engineering
Publication metrics
Number of publications (papers, proceedings, R-packages): 83
mean number of co-authors per publication: 3.819
number of publications with respect to the number of co-authors
single author: 3
co-authors 1: 22 2: 25
3: 7 4: 6
5: 4 6: 3
7: 1 8: 1
9: 4 11: 1
12: 1 14: 2
15: 1 19: 1
26: 1
Co-authors network (clik to open)
Number of different co-authors: 152
Top co-authors (number of publications (%))
G. Tzavelas: 16 (19.27%)
P. Alexopoulos: 16 (19.27%)
A. Batsidis: 15 (18.07%)
C. Caroni: 13 (15.66%)
S. Bersimis: 12 (14.48%)
Number of publications (papers, proceedings, R-packages): 83
mean number of co-authors per publication: 3.819
number of publications with respect to the number of co-authors
single author: 3
co-authors 1: 22 2: 25
3: 7 4: 6
5: 4 6: 3
7: 1 8: 1
9: 4 11: 1
12: 1 14: 2
15: 1 19: 1
26: 1
Co-authors network (clik to open)
Number of different co-authors: 152
Top co-authors (number of publications (%))
G. Tzavelas: 16 (19.27%)
P. Alexopoulos: 16 (19.27%)
A. Batsidis: 15 (18.07%)
C. Caroni: 13 (15.66%)
S. Bersimis: 12 (14.48%)