SPRA 2023: The 4th Symposium on Pattern Recognition and Applications was successfully held via Internet because of the COVID-19 spreading. Thanks for the support from all participants and committee members. Hope to meet you all next year in person. SPRA 2023 aims to build an ideal academic platform for the purpose of encouraging researcher participating in this event. SPRA 2023 accepted papers was published in SPIE conference proceedings with ISBN Vol. 13162.
Online: https://www.spiedigitallibrary.org/conference-proceedings-of-SPIE/13162
Index: EI Compendex and SCOPUS

Prof. Vassilis C. Gerogiannis from University of Thessaly host the morning session. and Prof. Giuliani Donatella from University of Bologna gave us an opening remarks.

This year, three speakers gave us excellent keynote speeches. Thety are:

Prof. Habib Zaidi, Geneva University Hospital. FIEEE, FAIMBE, FAAPM, FIOMP, Prof. Yannis Manolopoulos from Open University of Cyprus and Prof. David Benavides from University of Seville.

Winners of Best Oral Presentation of Sessions

Imposing Cache: Busy-Aware Cooperative Data Caching in Edge-Cloud Environments
Mr. Gyujeong Lim, Jihun Kang, Heonchang Yu
Korea University, South Korea

Difficulties in Object-Oriented Design and its relationship with Abstraction: A Systematic Review of Literature
Pamela Catherine Flores, Ismael Sebastian Rivas, Jenny Gabriela Torres
Escuela Politecnica Nacional, Ecuador