Biography
Christos N. Karras was born in Patras, Greece in 1997 and he is a Computer science Researcher. He obtained his Bachelor degree in Computer Science from the Department of Computer Science from the University of Liverpool and his Masters degree in Data Driven Computing and Decision Making from the Department of Computer Engineering and Informatics. He is currently a Ph.D. Student under the supervision of Prof. Spyros Sioutas and a research member of the Decentralized Systems Computing Group at the Computer Engineering and Informatics Department in University of Patras, Patras, Greece.
Researcher & Developer.
- Birthday: 9 April 1997
- Website: https://christoskarras.eu
- Phone: 6980936305
- City: Patras, Greece
- Age: 25
- Degree: Master
- Emailone: c.karras at ceid.upatras.gr
- Freelance: Available
Skills
Coding: Good coding skills in JAVA, C++
Website Development: Projects on HTML, CSS, Bootstap
Arduino Technologies: Projects on Arduino (ESP32, LoRa chips)
Robotics: Projects with path-finding solutions/navigation
Graphics Designer Skills: High skills on Adobe Photoshop
Resume
IBM Data Science Professional Certificate
Sumary
Research Interests
The main fields of research interests as well as my studies are focused in:
- Internet of Things (IoT)
- Sampling
- LoRa
- MCMC Methods
Education
PhD Candidate
2022 - Current
Affiliation: University of Patras, Patras, Greece
PhD Title: Deployment of Scalable and Speedy MCMC Algorithms for Big Data Stream Management
Master in Data Driven Computing and Decision Making
2020 - 2022
University of Patras, Patras, Greece
DDCDM (Data Driven Computing and Decision Making) is a three-semester (90 ECTS) postgraduate programme given by the Department of Computer Engineering & (CEID) and the Department of Mathematics (SNS) of the University of Patras. CEID administers the programme. The program's goal is to offer graduate level education and training in data processing, analysis, inference, and decision making using current computer platforms. Data mining and knowledge extraction methods, data modelling and simulation, methodologies, algorithms and technologies for decision making systems, e) designing and evaluating tools for the software stack and computational.
Bachelor in Computer Science
2016 - 2020
University of Liverpool, Merseyside, UK
The University of Liverpool's computer science history extends back to the 1960s. The Department of Computer Science was established in 1983 to promote study and research in this exciting new field that combines mathematics, physics, biology, and engineering. After five decades, the Department continues to evolve at a dizzying speed, remaining at the forefront of computer science globally. The department was one of the first in the University to collaborate with Xi'an Jiaotong-Liverpool University, resulting in a strong international teaching and research collaboration.
Professional Experience
Researcher
2021 - Present
CEID, Patras, Greece
- Christos is part of Decentralized Systems Computing (DSC) Group.
Computer Lab Assistant
2021 - 2022
CEID, Patras, Greece
- Christos participated in the workshop “Laboratory in programming language C”, part of the course “Computer Technology and Programming” at the Computer Engineering and Department as an auxiliary postgraduate student and lab assistant.
Publications
- Christos Karras, Aristeidis Karras
DBSOP: An Efficient Heuristic for Speedy MCMC Sampling on Polytopes
arXiv preprint arXiv:2203.10916
- Christos Karras, Aristeidis Karras, Spyros Sioutas
Pattern Recognition and Event Detection on IoT Data-streams
arXiv preprint arXiv:2203.01114
- Aristeidis Karras, Christos Karras, Georgios Drakopoulos, Dimitrios Tsolis, Phivos Mylonas, Spyros Sioutas
SAF: A Peer to Peer IoT LoRa System for Smart Supply Chain in Agriculture
18th IFIP WG 12.5 International Conference, AIAI, Springer, 2022
- Christos Karras, Aristeidis Karras, Markos Avlonitis, Spyros Sioutas
An Overview of MCMC Methods: From Theory to Applications
Artificial Intelligence Applications and Innovations. AIAI 2022 IFIP WG 12.5 International Workshops, Springer, 2022
- Christos Karras, Aristeidis Karras, Markos Avlonitis, Ioanna Giannoukou, Spyros Sioutas
Maximum Likelihood Estimators on MCMC Sampling Algorithms for Decision Making
Artificial Intelligence Applications and Innovations. AIAI 2022 IFIP WG 12.5 International Workshops, Springer, 2022
- Christos Karras, Aristeidis Karras, Leonidas Theodorakopoulos, Ioanna Giannoukou, Spyros Sioutas
Expanding Queries with Maximum Likelihood Estimators and Language Models
Innovations in Computing Research, Springer, 2022
- Aristeidis Karras , Christos Karras, Konstantinos C. Giotopoulos, Ioanna Giannoukou, Dimitrios Tsolis, Spyros Sioutas
Download Speed Optimization in P2P Networks using Decision Making and Adaptive Learning
Innovations in Computing Research, Springer, 2022
- Aristeidis Karras, Christos Karras
Integrating User and Item Reviews in Deep Cooperative Neural Networks for Movie Ranking Prediction
arXiv preprint arXiv:2205.06296
- Christos-Panagiotis Balatsouras, Aristeidis Karras, Christos Karras, Dimitrios Tsolis, Spyros Sioutas
WiCHORD: A Chord Protocol Application on P2P LoRa Wireless Sensor Networks
13th International Conference on Information, Intelligence, Systems & Applications (IISA), IEEE, 2022
- Christos Karras, Aristeidis Karras, Georgios Drakopoulos, Konstantinos Tsakalidis, Phivos Mylonas, Spyros Sioutas
Weighted Reservoir Sampling On Evolving Streams: A Sampling Algorithmic Framework For Stream Event Identification
12th Hellenic Conference on Artificial Intelligence (SETN), ACM, 2022
- Georgios Drakopoulos, Aristeidis Karras, Christos Karras, Konstantinos C. Giotopoulos, Phivos Mylonas, Spyros Sioutas
Decomposing Twitter Graphs Based On Hashtag Trajectories: Mining And Clustering Paths Over MongoDB
12th Hellenic Conference on Artificial Intelligence (SETN), ACM, 2022
- Christos Karras, Aristeidis Karras, Georgios Drakopoulos, Dimitrios Tsolis, Phivos Mylonas, Spyros Sioutas
A LoRa-Based Emotion Estimation Scheme for Smart Home Automated Actions Using ELMs
8th International Smart Cities Conference (ISC2), IEEE, 2022
- Aristeidis Karras, Christos Karras, Antonios Pervanas, Spyros Sioutas, Christos Zaroliagis
SQL Query Optimization in Distributed NoSQL Databases for Cloud-based Applications
7th International Symposium on Algorithmic Aspects of Cloud Computing (ALGOCLOUD), Springer, 2022 (to appear)
- Aristeidis Karras, Christos Karras, Dimitrios Samoladas, Konstantinos C. Giotopoulos, Spyros Sioutas
Query Optimization in NoSQL Databases Using an Enhanced Localized R-tree Index
24th International Conference on Information Integration and Web Intelligence (iiWAS), Springer, 2022
- Angelos Zacharia, Dimitris Zacharia, Aristeidis Karras, Christos Karras, Ioanna Giannoukou, Konstantinos C. Giotopoulos, Spyros Sioutas
An Intelligent Microprocessor Integrating TinyML in Smart Hotels for Rapid Accident Prevention
7th South-East Europe Design Automation, Computer Engineering, Computer Networks and Social Media Conference (SEEDA-CECNSM), IEEE, 2022
- Christos Karras, Aristeidis Karras, Dimitrios Tsolis, Konstantinos C. Giotopoulos, Spyros Sioutas
Distributed Gibbs Sampling and LDA Modeling for Large Scale Big Data Management on PySpark
7th South-East Europe Design Automation, Computer Engineering, Computer Networks and Social Media Conference (SEEDA-CECNSM), IEEE, 2022
- Christos Karras, Aristeidis Karras, Konstantinos C. Giotopoulos, Ioanna Giannoukou, Dimitrios Tsolis, Spyros Sioutas
Global Graph Clustering and Local Graph Exploration for Community Detection in Twitter
7th South-East Europe Design Automation, Computer Engineering, Computer Networks and Social Media Conference (SEEDA-CECNSM), IEEE, 2022
- Aristeidis Karras, Christos Karras, Konstantinos C. Giotopoulos, Dimitrios Tsolis, Konstantinos Oikonomou, Spyros Sioutas
Peer to Peer Federated Learning: Towards Decentralized Machine Learning on Edge Devices
7th South-East Europe Design Automation, Computer Engineering, Computer Networks and Social Media Conference (SEEDA-CECNSM), IEEE, 2022
- Andreas Karatzas, Aristeidis Karras, Christos Karras, Konstantinos C. Giotopoulos, Konstantinos Oikonomou, Spyros Sioutas
On Autonomous Drone Navigation Using Deep Learning and an Intelligent Rainbow DQN Agent
23rd International Conference on Intelligent Data Engineering and Automated Learning (IDEAL), Springer, 2022
- Dimitrios Michalopoulos, Aristeidis Karras, Christos Karras, Spyros Sioutas, Konstantinos C. Giotopoulos
Neuro-Fuzzy Employee Ranking System in the Public Sector
The 8th International Conference on Fuzzy Systems and Data Mining (FSDM), IOS Press, 2022
- Aristeidis Karras, Christos Karras, Agorakis Bompotas, Panagiotis Bouras, Leonidas Theodorakopoulos, Spyros Sioutas
SparkReact: A Novel and User-friendly Graphical Interface for the Apache Spark MLlib Library
26th Pan-Hellenic Conference on Informatics (PCI), ACM, 2022 (to appear)
- Dimitrios Samoladas, Christos Karras, Aristeidis Karras, Leonidas Theodorakopoulos, Spyros Sioutas
Tree Data Structures and Efficient Indexing Techniques for Big Data Management: A Comprehensive Study
26th Pan-Hellenic Conference on Informatics (PCI), ACM, 2022 (to appear)
- Christos Karras, Aristeidis Karras, Dimitrios Tsolis, Markos Avlonitis, Spyros Sioutas
A Hybrid Ensemble Deep Learning Approach for Emotion Classification
2022 IEEE International Conference on Big Data (Big Data), IEEE, 2022 (to appear)
Contact
Feel free to contact me
Location:
Office 1.29, Computer Engineering and Dept.
Email:
c.karras at ceid.upatras.gr
Call:
TBA