Full name: 2023 The 4th Symposium on Pattern Recognition and Applications (SPRA 2023) Abbreviation: SPRA 2023 Napoli, Italy, December 1-3, 2023 More details, please visit: https://spra.org/ The 4th Symposium on Pattern Recognition and Applications covers a broad spectrum of pattern recognition topics. It aims to provide an international forum for presentation of original research results, as well as exchange and dissemination of innovative and practical development experiences. Papers describing original work are invited in any of the pattern recognition areas that the Call for Papers considers. *Publication and Indexing: Accepted full papers of SPRA2023 will be published in the conference proceedings, which will be indexed by Scopus, Ei Compendex, etc. SPRA 2022, ACM (ISBN: 978-1-4503-9730-8), index soon. SPRA 2021, ACM (ISBN: 978-1-4503-8506-0), indexed by EI Compendex and Scopus. SPRA 2020, ACM (ISBN: 978-1-4503-7762-1), indexed by EI Compendex and Scopus. *Call for Papers (http://spra.org/cfp.html) - Included but not limited - ★ Computer Vision ★ Biomedical Image Analysis ★ Pattern Recognition and Machine Learning ★ Image, Speech, Signal and Video Processing ★ Document Analysis, Biometrics and Pattern Recognition Applications *Submission: By online submission system: https://www.zmeeting.org/submission/spra2023 *Contact: Ms. Sara Clark Conference Secretary Email: spra_info@academic.net