Pavlos Kefalas

29 papers A 1B 1C 3Journal 20Unranked 3
YearRankTypeTitle / Venue / Authors
2026 J jnl
A Critical Review on Citation Recommendation Systems Through a Graph-Centric Approach.
SN Comput. Sci.
Pavlos Kefalas, Zafar Ali, Yannis Manolopoulos
2026 J jnl
A citation recommendation model employing knowledge graph embedding.
Soft Comput.
Zafar Ali, Guilin Qi, Sumaira Hussain, Irfan Ullah, Shah Khalid, Adam A. Q. Mohammed, Inam Ullah, Aalia Malik, Pavlos Kefalas
2026 J jnl
Pythia-RAG: Retrieval-augmented generation over a unified multimodal knowledge graph for enhanced QA.
Knowl. Based Syst.
Zafar Ali, Yi Huang, Asad Khan, Guilin Qi, Yuxin Zhang, Junlan Feng, Chao Deng, Pavlos Kefalas
2025 J jnl
Improved paper recommendation model incorporating knowledge graph embedding with IRGAN model.
Trans. Recomm. Syst.
Nimbeshaho Thierry, Ingabire Batamira Christ Chatelain, Zafar Ali, Pavlos Kefalas
2025 J jnl
Prompt-Guided Dialogue State Tracking with GPT-2 and Graph Attention.
Comput. Mater. Continua
Muhammad Asif Khan, Dildar Hussain, Bhuyan Kaibalya Prasad, Irfan Ullah, Inayat Khan, Jawad Khan, Yeong Hyeon Gu, Pavlos Kefalas
2024 A conf
GLAMOR: Graph-based LAnguage MOdel embedding for citation Recommendation.
RecSys
Zafar Ali, Guilin Qi, Irfan Ullah, Adam A. Q. Mohammed, Pavlos Kefalas, Khan Muhammad
2024 — conf
Leverage Diagnosis Intensity in Medication Recommendations.
ICIC (LNAI 6)
Abdul Aziz, Zafar Ali, Guilin Qi, Yi Huang, Pavlos Kefalas, Aminullah, Asad Ali
2024 J jnl
UTMGAT: a unified transformer with memory encoder and graph attention networks for multidomain dialogue state tracking.
Appl. Intell.
Muhammad Asif Khan, Bhuyan Kaibalya Prasad, Guilin Qi, Wei Song, Fanghua Ye, Zafar Ali, Irfan Ullah, Pavlos Kefalas
2023 — conf
Citation Recommendation Employing Proximity-Based Heterogeneous Network Embeddings.
IntelliSys (1)
Zafar Ali, Irfan Ullah, Pavlos Kefalas, Nimbeshaho Thierry, Kalim Ul Haq, Anupam Sarkar
2023 J jnl
On the current state of deep learning for news recommendation.
Artif. Intell. Rev.
Nabila Amir, Fouzia Jabeen, Zafar Ali, Irfan Ullah, Asim Ullah Jan, Pavlos Kefalas
2023 J jnl
PRM-KGED: paper recommender model using knowledge graph embedding and deep neural network.
Appl. Intell.
Nimbeshaho Thierry, Bing-Kun Bao, Zafar Ali, Zhiyi Tan, Ingabire Batamira Christ Chatelain, Pavlos Kefalas
2022 J jnl
SPR-SMN: scientific paper recommendation employing SPECTER with memory network.
Scientometrics
Zafar Ali, Guilin Qi, Pavlos Kefalas, Shah Khusro, Inayat Khan, Khan Muhammad
2022 J jnl
Software defect prediction employing BiLSTM and BERT-based semantic feature.
Soft Comput.
Md Nasir Uddin, Bixin Li, Zafar Ali, Pavlos Kefalas, Inayat Khan, Islam Zada
2021 J jnl
Global citation recommendation employing generative adversarial network.
Expert Syst. Appl.
Zafar Ali, Guilin Qi, Khan Muhammad, Pavlos Kefalas, Shah Khusro
2021 J jnl
RELINE: point-of-interest recommendations using multiple network embeddings.
Knowl. Inf. Syst.
Giannis Christoforidis, Pavlos Kefalas, Apostolos N. Papadopoulos, Yannis Manolopoulos
2020 J jnl
A graph-based taxonomy of citation recommendation models.
Artif. Intell. Rev.
Zafar Ali, Guilin Qi, Pavlos Kefalas, Waheed Ahmad Abro, Bahadar Ali
2020 J jnl
Deep learning in citation recommendation models survey.
Expert Syst. Appl.
Zafar Ali, Pavlos Kefalas, Khan Muhammad, Bahadar Ali, Muhammad Imran
2019 J jnl
RELINE: Point-of-Interest Recommendations using Multiple Network Embeddings.
CoRR
Giannis Christoforidis, Pavlos Kefalas, Apostolos N. Papadopoulos, Yannis Manolopoulos
2019 C conf
Recommending Points of Interest in LBSNs Using Deep Learning Techniques.
INISTA
Giannis Christoforidis, Pavlos Kefalas, Apostolos N. Papadopoulos, Yannis Manolopoulos
2018 B conf
Recommendation of Points-of-Interest Using Graph Embeddings.
DSAA
Giannis Christoforidis, Pavlos Kefalas, Apostolos Papadopoulos, Yannis Manolopoulos
2018 J jnl
Recommendations based on a heterogeneous spatio-temporal social network.
World Wide Web
Pavlos Kefalas, Panagiotis Symeonidis, Yannis Manolopoulos
2017 J jnl
A time-aware spatio-textual recommender system.
Expert Syst. Appl.
Pavlos Kefalas, Yannis Manolopoulos
2017 J jnl
Preference dynamics with multimodal user-item interactions in social media recommendation.
Expert Syst. Appl.
Dimitrios Rafailidis, Pavlos Kefalas, Yannis Manolopoulos
2017 — —
Recommendation models for dynamic spatiotemporal big data
Pavlos Kefalas
2016 J jnl
A Graph-Based Taxonomy of Recommendation Algorithms and Systems in LBSNs.
IEEE Trans. Knowl. Data Eng.
Pavlos Kefalas, Panagiotis Symeonidis, Yannis Manolopoulos
2015 C conf
Recommending Friends and Locations over a Heterogeneous Spatio-Temporal Graph.
MEDI
Pavlos Kefalas, Panagiotis Symeonidis
2014 — conf
Advances in Algorithms for Time-Dependent Recommender Systems.
SMAP
Pavlos Kefalas, Yannis Manolopoulos
2013 C conf
New perspectives for recommendations in location-based social networks: time, privacy and explainability.
MEDES
Pavlos Kefalas, Panagiotis Symeonidis, Yannis Manolopoulos
2011 J jnl
A tool for access to relational databases in natural language.
Expert Syst. Appl.
Nikos Papadakis, Pavlos Kefalas, Manolis Stilianakakis