OCSS: Ontology Cloud Storage System. - Haytham Tawfeek al Feel; Mohamed Helmy Khafagy (NCCA, 2011)

Distributed Ontology Cloud Storage System. - Mohamed Helmy Khafagy; Haytham Tawfeek al Feel (NCCA, 2012)

Locality Sim: Cloud Simulator with Data Locality. - Ahmed H. Abase; Mohamed Helmy Khafagy; Fatma A. Omara (CoRR, 2017)

Redundant Independent Files (RIF): A Technique for Reducing Storage and Resources in Big Data Replication. - Mostafa R. Kaseb; Mohamed Helmy Khafagy; Ihab A. Ali; ElSayed M. Saad (WorldCIST (1), 2018)

iHOME: Index-Based JOIN Query Optimization for Limited Big Data Storage. - Radhya Sahal; Marwah Nihad; Mohamed Helmy Khafagy; Fatma A. Omara (J. Grid Comput., 2018)

Big data multi-query optimisation with Apache Flink. - Radhya Sahal; Mohamed Helmy Khafagy; Fatma A. Omara (Int. J. Web Eng. Technol., 2018)

Exploiting coarse-grained reused-based opportunities in Big Data multi-query optimization. - Radhya Sahal; Mohamed Helmy Khafagy; Fatma A. Omara (J. Comput. Sci., 2018)

Multi-split HDFS Technique for Improving Data Confidentiality in Big Data Replication. - Mostafa R. Kaseb; Mohamed Helmy Khafagy; Ihab A. Ali; ElSayed M. Saad (WorldCIST (1), 2019)

An improved technique for increasing availability in Big Data replication. - Mostafa R. Kaseb; Mohamed Helmy Khafagy; Ihab A. Ali; ElSayed M. Saad (Future Gener. Comput. Syst., 2019)

SOOM: Sort-Based Optimizer for Big Data Multi-Query. - Radhya Sahal; Mohamed Helmy Khafagy; Fatma A. Omara (Big Data, 2020)

Exploiting Sharing Join Opportunities in Big Data Multiquery Optimization with Flink. - Xiao-Yan Gao; Radhya Sahal; Gui-Xiu Chen; Mohamed Helmy Khafagy; Fatma A. Omara (Complex., 2020)

Exploiting Reused-Based Sharing Work Opportunities in Big Data Multiquery Optimization with Flink. - Radhya Sahal; Mohamed Helmy Khafagy; Fatma A. Omara (Big Data, 2021)

An efficient load balancing technique for task scheduling in heterogeneous cloud environment. - Hadeer Mahmoud; Mostafa Thabet; Mohamed Helmy Khafagy; Fatma A. Omara (Clust. Comput., 2021)

A Comparative Study on Improving Straggler Tasks in Hadoop. - Gehad K. Hussien; Mohamed Helmy Khafagy; Mohamed H. Ibrahim; Mostafa R. Kaseb (WorldCIST (1), 2022)

Multiobjective Task Scheduling in Cloud Environment Using Decision Tree Algorithm. - Hadeer Mahmoud; Mostafa Thabet; Mohamed Helmy Khafagy; Fatma A. Omara (IEEE Access, 2022)

Dynamic Replication Policy on HDFS Based on Machine Learning Clustering. - Motaz A. Ahmed; Mohamed Helmy Khafagy; Masoud E. Shaheen; Mostafa R. Kaseb (IEEE Access, 2023)

A Proposed Model for Distinguishing Between Human-Based and ChatGPT Content in Scientific Articles. - Toka A. Mohamed; Mohamed Helmy Khafagy; Ahmed I. B. Elseddawy; Ahmed S. Ismail (IEEE Access, 2024)

Coronary Artery Disease Prediction by CombiningThree Classifiers. - Ghada Abdallah Radwan; Mohamed Helmy Khafagy; Mostafa Thabet Mohamed Mabrouk; Marwa Hussien Mohamed (J. Inf. Hiding Multim. Signal Process., 2024)

Exploring the VAK model to predict student learning styles based on learning activity. - Ahmed Rashad Sayed; Mohamed Helmy Khafagy; Mostafa Ali; Marwa Hussien Mohamed (Intell. Syst. Appl., 2025)