Konstantinos I. Roumeliotis

According to our database, Konstantinos I. Roumeliotis authored at least 25 papers between 2022 and 2026.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of five.

2026

AI Agents vs. Agentic AI: A Conceptual taxonomy, applications and challenges.

Ranjan Sapkota, Konstantinos I. Roumeliotis, Manoj Karkee

Inf. Fusion, 2026

A Large-Scale Empirical Study of LLM Orchestration and Ensemble Strategies for Sentiment Analysis in Recommender Systems.

Konstantinos I. Roumeliotis, Dionisis Margaris, Dimitris Spiliotopoulos, Costas Vassilakis

Future Internet, 2026

ORAM.AI: A multi-agent chatbot with RAG-based reasoning and MCP integration for adaptive fitness recommendation.

Konstantinos I. Roumeliotis, Orestis N. Zestas, Kyriakos D. Kyriakou, Dimitrios N. Soumis, Sofia Kapellaki, Kyriaki Seklou, Nikolaos D. Tselikas

Array, 2026

Agentic AI With Orchestrator-Agent Trust: A Modular Visual Classification Framework With Trust-Aware Orchestration and RAG-Based Reasoning.

Konstantinos I. Roumeliotis, Ranjan Sapkota, Manoj Karkee, Nikolaos D. Tselikas

IEEE Access, 2026

2025

Generalization vs. Specialization: Evaluating Segment Anything Model (SAM3) Zero-Shot Segmentation Against Fine-Tuned YOLO Detectors.

Ranjan Sapkota, Konstantinos I. Roumeliotis, Manoj Karkee, Nikolaos D. Tselikas

CoRR, December, 2025

The SAM2-to-SAM3 Gap in the Segment Anything Model Family: Why Prompt-Based Expertise Fails in Concept-Driven Image Segmentation.

Ranjan Sapkota, Konstantinos I. Roumeliotis, Manoj Karkee

CoRR, December, 2025

Orchestrator-Agent Trust: A Modular Agentic AI Visual Classification System with Trust-Aware Orchestration and RAG-Based Reasoning.

Konstantinos I. Roumeliotis, Ranjan Sapkota, Manoj Karkee, Nikolaos D. Tselikas

CoRR, July, 2025

UAVs Meet Agentic AI: A Multidomain Survey of Autonomous Aerial Intelligence and Agentic UAVs.

Ranjan Sapkota, Konstantinos I. Roumeliotis, Manoj Karkee

CoRR, June, 2025

Vibe Coding vs. Agentic Coding: Fundamentals and Practical Implications of Agentic AI.

Ranjan Sapkota, Konstantinos I. Roumeliotis, Manoj Karkee

CoRR, May, 2025

Vision-Language-Action Models: Concepts, Progress, Applications and Challenges.

Ranjan Sapkota, Yang Cao, Konstantinos I. Roumeliotis, Manoj Karkee

CoRR, May, 2025

Plant Disease Detection through Multimodal Large Language Models and Convolutional Neural Networks.

Konstantinos I. Roumeliotis, Ranjan Sapkota, Manoj Karkee, Nikolaos D. Tselikas, Dimitrios K. Nasiopoulos

CoRR, April, 2025

A Review of 3D Object Detection with Vision-Language Models.

Ranjan Sapkota, Konstantinos I. Roumeliotis, Rahul Harsha Cheppally, Marco Flores-Calero, Manoj Karkee

CoRR, April, 2025

LLMs for product classification in e-commerce: A zero-shot comparative study of GPT and claude models.

Konstantinos I. Roumeliotis, Nikolaos D. Tselikas, Dimitrios K. Nasiopoulos

Nat. Lang. Process. J., 2025

Fake News Detection and Classification: A Comparative Study of Convolutional Neural Networks, Large Language Models, and Natural Language Processing Models.

Konstantinos I. Roumeliotis, Nikolaos D. Tselikas, Dimitrios K. Nasiopoulos

Future Internet, 2025

Optimizing Airline Review Sentiment Analysis: A Comparative Analysis of LLaMA and BERT Models through Fine-Tuning and Few-Shot Learning.

Konstantinos I. Roumeliotis, Nikolaos D. Tselikas, Dimitrios K. Nasiopoulos

Comput. Mater. Continua, 2025

When Multimodal Large Language Models Meet Computer Vision: Progressive GPT Fine-Tuning and Stress Testing.

Konstantinos I. Roumeliotis, Nikolaos D. Tselikas, Dimitrios K. Nasiopoulos

IEEE Access, 2025

2024

LLMs in e-commerce: A comparative analysis of GPT and LLaMA models in product review evaluation.

Konstantinos I. Roumeliotis, Nikolaos D. Tselikas, Dimitrios K. Nasiopoulos

Nat. Lang. Process. J., 2024

Precision-Driven Product Recommendation Software: Unsupervised Models, Evaluated by GPT-4 LLM for Enhanced Recommender Systems.

Konstantinos I. Roumeliotis, Nikolaos D. Tselikas, Dimitrios K. Nasiopoulos

Softw., 2024

Leveraging Large Language Models in Tourism: A Comparative Study of the Latest GPT Omni Models and BERT NLP for Customer Review Classification and Sentiment Analysis.

Konstantinos I. Roumeliotis, Nikolaos D. Tselikas, Dimitrios K. Nasiopoulos

Inf., 2024

LLMs and NLP Models in Cryptocurrency Sentiment Analysis: A Comparative Classification Study.

Konstantinos I. Roumeliotis, Nikolaos D. Tselikas, Dimitrios K. Nasiopoulos

Big Data Cogn. Comput., 2024

2023

ChatGPT and Open-AI Models: A Preliminary Review.

Konstantinos I. Roumeliotis, Nikolaos D. Tselikas

Future Internet, June, 2023

A Machine Learning Python-Based Search Engine Optimization Audit Software.

Konstantinos I. Roumeliotis, Nikolaos D. Tselikas

Informatics, 2023

2022

Greek Hotels' Web Traffic: A Comparative Study Based on Search Engine Optimization Techniques and Technologies.

Konstantinos I. Roumeliotis, Nikolaos D. Tselikas, Christos Tryfonopoulos

Digit., June, 2022

Evaluating Progressive Web App Accessibility for People with Disabilities.

Konstantinos I. Roumeliotis, Nikolaos D. Tselikas

Network, 2022

An Effective SEO Techniques and Technologies Guide-map.

Konstantinos I. Roumeliotis, Nikolaos D. Tselikas

J. Web Eng., 2022