Hybrid Intelligent Systems: 21st International Conference on Hybrid Intelligent Systems (HIS 2021), December 14-16, 2021

YOLOv5 Based Deep Convolutional Neural Networks for Vehicle Recognition in Smart University Campus.- Analysis of Twitter User's Sentiment Against Covid-19 Vaccination Using the Lexicon Based Method.- Dual Connectivity Handoff Analysis for ENDC C/U-plane Split NSA NR5G Networks.- Blockchain Integrated Machine Learning For Training Autonomous Cars.- Privacy Preservation Technique based on Sensitivity Levels for Multiple Numerical Sensitive Overlapped Attributes.- Feature Ranking Based Carrot Disease Recognition Using MIFS Method.- Designing Knowledge-Based Systems for COVID-19 Diagnosis.