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Federated learning (FL) offers privacy-preserving decentralized machine learning, optimizing models at edge clients without sharing private data. Simultaneously, foundation models (FMs) have gained traction in the artificial intelligence…

Machine Learning · Computer Science 2023-10-06 Sixing Yu , J. Pablo Muñoz , Ali Jannesari

In the last years, the Linked Data Cloud has achieved a size of more than 100 billion facts pertaining to a multitude of domains. However, accessing this information has been significantly challenging for lay users. Approaches to problems…

Computation and Language · Computer Science 2020-05-07 Tommaso Soru , Edgard Marx , Diego Moussallem , Gustavo Publio , André Valdestilhas , Diego Esteves , Ciro Baron Neto

Federated Learning (FL) is a machine learning approach that allows multiple clients to collaboratively learn a shared model without sharing raw data. However, current FL systems provide an all-in-one solution, which can hinder the wide…

Databases · Computer Science 2023-03-16 Muhammad Jahanzeb Khan , Rui Hu , Mohammad Sadoghi , Dongfang Zhao

Distributed Ledger Technologies (DLT) and Decentralized File Storages (DFS) are becoming increasingly used to create common, decentralized and trustless infrastructures where participants interact and collaborate in Peer-to-Peer…

Distributed, Parallel, and Cluster Computing · Computer Science 2021-09-13 Mirko Zichichi , Luca Serena , Stefano Ferretti , Gabriele D'Angelo

The increasing demand for deep learning-based foundation models has highlighted the importance of efficient data retrieval mechanisms. Neural graph databases (NGDBs) offer a compelling solution, leveraging neural spaces to store and query…

Machine Learning · Computer Science 2025-07-09 Qi Hu , Weifeng Jiang , Haoran Li , Zihao Wang , Jiaxin Bai , Qianren Mao , Yangqiu Song , Lixin Fan , Jianxin Li

Large language models (LLMs) are increasingly accessed as remotely hosted services by edge and enterprise clients that cannot run frontier models locally. Since models vary widely in capability and price, routing queries to models that…

Machine Learning · Computer Science 2026-02-02 Baris Askin , Shivam Patel , Anupam Nayak , Andrea Vigano , Jiin Woo , Gauri Joshi , Carlee Joe-Wong

There is growing research interest in measuring the statistical heterogeneity of clients' local datasets. Such measurements are used to estimate the suitability for collaborative training of personalized federated learning (PFL) models.…

Machine Learning · Computer Science 2024-10-29 Zhilong Li , Xiaohu Wu , Xiaoli Tang , Tiantian He , Yew-Soon Ong , Mengmeng Chen , Qiqi Liu , Qicheng Lao , Han Yu

Within the Semantic Web community, SPARQL is one of the predominant languages to query and update RDF knowledge. However, the complexity of SPARQL, the underlying graph structure and various encodings are common sources of confusion for…

Databases · Computer Science 2022-02-07 Markus Schröder , Jörn Hees , Ansgar Bernardi , Daniel Ewert , Peter Klotz , Steffen Stadtmüller

Increasing concerns and regulations about data privacy and sparsity necessitate the study of privacy-preserving, decentralized learning methods for natural language processing (NLP) tasks. Federated learning (FL) provides promising…

The scalability and exibility of Resource Description Framework(RDF) model make it ideally suited for representing online social networks(OSN). One basic operation in OSN is to find chains of relations,such as k-Hop friends. Property path…

Databases · Computer Science 2016-11-25 Lei Gai , Wei Chen , Zhichao Xu , Changhe Qiu , Tengjiao Wang

Federated learning offers a privacy-preserving framework for recommendation systems by enabling local data processing; however, data localization introduces substantial obstacles. Traditional federated recommendation approaches treat each…

Machine Learning · Computer Science 2026-03-10 Xudong Wang , Qingbo Hao , Yingyuan Xiao

The Web of Data encourages organizations and companies to publish their data according to the Linked Data practices and offer SPARQL endpoints. On the other hand, the dominant standard for information exchange is XML. The SPARQL2XQuery…

Databases · Computer Science 2014-08-28 Nikos Bikakis , Chrisa Tsinaraki , Ioannis Stavrakantonakis , Stavros Christodoulakis

With the ever proliferating size and scale of the WWW [1] efficient ways of exploring content are of increasing importance. How can we efficiently retrieve information from it through crawling? And in this era of tera and multi-core…

Information Retrieval · Computer Science 2014-06-24 Sonali Gupta , Komal kumar Bhatia , Pikakshi Manchanda

Semantic Web technology has successfully facilitated many RDF models with rich data representation methods. It also has the potential ability to represent and store multimodal knowledge bases such as multimodal scene graphs. However, most…

Databases · Computer Science 2022-09-08 Yanzeng Li , Zilong Zheng , Wenjuan Han , Lei Zou

The importance of geo-spatial data in critical applications such as emergency response, transportation, agriculture etc., has prompted the adoption of recent GeoSPARQL standard in many RDF processing engines. In addition to large…

Databases · Computer Science 2017-10-23 Jyoti Leeka , Srikanta Bedathur , Debajyoti Bera , Sriram Lakshminarasimhan

Scientists always look for the most accurate and relevant answers to their queries in the literature. Traditional scholarly digital libraries list documents in search results, and therefore are unable to provide precise answers to search…

Digital Libraries · Computer Science 2021-07-13 Golsa Heidari , Ahmad Ramadan , Markus Stocker , Sören Auer

This paper presents ForestQB, a SPARQL query builder, to assist Bioscience and Wildlife Researchers in accessing Linked-Data. As they are unfamiliar with the Semantic Web and the data ontologies, ForestQB aims to empower them to benefit…

Information Retrieval · Computer Science 2022-10-07 Omar Mussa , Omer Rana , Benoît Goossens , Pablo Orozco-terWengel , Charith Perera

Federated Learning (FL) provides decentralised model training, which effectively tackles problems such as distributed data and privacy preservation. However, the generalisation of global models frequently faces challenges from data…

Machine Learning · Computer Science 2025-09-05 Ozgu Goksu , Nicolas Pugeault

Conversational question answering (ConvQA) is a convenient means of searching over RDF knowledge graphs (KGs), where a prevalent approach is to translate natural language questions to SPARQL queries. However, SPARQL has certain…

Computation and Language · Computer Science 2024-12-30 Rishiraj Saha Roy , Chris Hinze , Joel Schlotthauer , Farzad Naderi , Viktor Hangya , Andreas Foltyn , Luzian Hahn , Fabian Kuech

Graph learning has a wide range of applications in many scenarios, which require more need for data privacy. Federated learning is an emerging distributed machine learning approach that leverages data from individual devices or data centers…

Machine Learning · Computer Science 2023-07-20 Peilin Liu , Yanni Tang , Mingyue Zhang , Wu Chen