2026 Helen D. Karatza: Computer Science Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Computer Science	31	13703	13288	121	120	291	3867

Discipline name

D-Index

World Ranking

Current World Ranking

National Ranking

Current National Ranking

Publications

Citations

Computer Science

13703

13288

121

120

291

3867

Research.com Recognitions

2009 - ACM Senior Member

Best Publications

Performance evaluation of cloud-based log file analysis with Apache Hadoop and Apache Spark

Ilias Mavridis;Helen Karatza

194
Citations
Evaluation of gang scheduling performance and cost in a cloud computing system

Ioannis A. Moschakis;Helen D. Karatza

160
Citations
A hybrid approach to scheduling real-time IoT workflows in fog and cloud environments

Georgios L. Stavrinides;Helen D. Karatza

152
Citations
An energy-efficient, QoS-aware and cost-effective scheduling approach for real-time workflow applications in cloud computing systems utilizing DVFS and approximate computations

Georgios L. Stavrinides;Helen D. Karatza

143
Citations
Performance and energy aware cluster-level scheduling of compute-intensive jobs with unknown service times

Stylianos Zikos;Helen D. Karatza

96
Citations
Combining containers and virtual machines to enhance isolation and extend functionality on cloud computing

Ilias Mavridis;Helen D. Karatza

89
Citations
Multi-criteria scheduling of Bag-of-Tasks applications on heterogeneous interlinked clouds with simulated annealing

Ioannis A. Moschakis;Helen D. Karatza

88
Citations
A Scheduling Algorithm for a Fog Computing System with Bag-of-Tasks Jobs: Simulation and Performance Evaluation

Dimitrios Tychalas;Helen D. Karatza

78
Citations
Scheduling multiple task graphs in heterogeneous distributed real-time systems by exploiting schedule holes with bin packing techniques

Georgios L. Stavrinides;Helen D. Karatza

78
Citations
Scheduling multiple task graphs with end-to-end deadlines in distributed real-time systems utilizing imprecise computations

Georgios L. Stavrinides;Helen D. Karatza

69
Citations
Performance and cost evaluation of Gang Scheduling in a Cloud Computing system with job migrations and starvation handling

Ioannis A. Moschakis;Helen D. Karatza

69
Citations
Scheduling real-time DAGs in heterogeneous clusters by combining imprecise computations and bin packing techniques for the exploitation of schedule holes

Georgios L. Stavrinides;Helen D. Karatza

66
Citations
A Cost-Effective and QoS-Aware Approach to Scheduling Real-Time Workflow Applications in PaaS and SaaS Clouds

Georgios L. Stavrinides;Helen D. Karatza

56
Citations
Job scheduling in heterogeneous distributed systems

Helen D Karatza

54
Citations
A meta-heuristic optimization approach to the scheduling of bag-of-tasks applications on heterogeneous clouds with multi-level arrivals and critical jobs

Ioannis A. Moschakis;Helen D. Karatza

41
Citations
Multi-Criteria Job Scheduling in Grid Using an Accelerated Genetic Algorithm

Kyriaki Z. Gkoutioudi;Helen D. Karatza

39
Citations
Towards scheduling for Internet-of-Things applications on clouds: a simulated annealing approach

Ioannis A. Moschakis;Helen D. Karatza

38
Citations
Communication cost effective scheduling policies of nonclairvoyant jobs with load balancing in a grid

Stylianos Zikos;Helen D. Karatza

35
Citations
The impact of task service time variability on gang scheduling performance in a two-cluster system

Zafeirios C. Papazachos;Helen D. Karatza

32
Citations
Performance and Overhead Study of Containers Running on Top of Virtual Machines

Ilias Mavridis;Helen Karatza

32
Citations

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Recently Published Articles

Helen D. Karatza

D-Index & Metrics

D-Index & Metrics

Computer Science

Research.com Recognitions

Best Publications

Performance evaluation of cloud-based log file analysis with Apache Hadoop and Apache Spark

Evaluation of gang scheduling performance and cost in a cloud computing system

A hybrid approach to scheduling real-time IoT workflows in fog and cloud environments

An energy-efficient, QoS-aware and cost-effective scheduling approach for real-time workflow applications in cloud computing systems utilizing DVFS and approximate computations

Performance and energy aware cluster-level scheduling of compute-intensive jobs with unknown service times

Combining containers and virtual machines to enhance isolation and extend functionality on cloud computing

Multi-criteria scheduling of Bag-of-Tasks applications on heterogeneous interlinked clouds with simulated annealing

A Scheduling Algorithm for a Fog Computing System with Bag-of-Tasks Jobs: Simulation and Performance Evaluation

Scheduling multiple task graphs in heterogeneous distributed real-time systems by exploiting schedule holes with bin packing techniques

Scheduling multiple task graphs with end-to-end deadlines in distributed real-time systems utilizing imprecise computations

Performance and cost evaluation of Gang Scheduling in a Cloud Computing system with job migrations and starvation handling

Scheduling real-time DAGs in heterogeneous clusters by combining imprecise computations and bin packing techniques for the exploitation of schedule holes

A Cost-Effective and QoS-Aware Approach to Scheduling Real-Time Workflow Applications in PaaS and SaaS Clouds

Job scheduling in heterogeneous distributed systems

A meta-heuristic optimization approach to the scheduling of bag-of-tasks applications on heterogeneous clouds with multi-level arrivals and critical jobs

Multi-Criteria Job Scheduling in Grid Using an Accelerated Genetic Algorithm

Towards scheduling for Internet-of-Things applications on clouds: a simulated annealing approach

Communication cost effective scheduling policies of nonclairvoyant jobs with load balancing in a grid

The impact of task service time variability on gang scheduling performance in a two-cluster system

Performance and Overhead Study of Containers Running on Top of Virtual Machines

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