Results 1 to 10 of about 32,178 (242)
Semantics and complexity of SPARQL [PDF]
ACM Transactions on Database Systems, 2006 SPARQL is the standard language for querying RDF data. In this article, we address systematically the formal study of the database aspects of SPARQL, concentrating in its graph pattern matching facility.
Jorge Pérez +2 more
semanticscholar +10 more sources
SGPT: A Generative Approach for SPARQL Query Generation From Natural Language Questions
IEEE Access, 2022 SPARQL query generation from natural language questions is complex because it requires an understanding of both the question and underlying knowledge graph (KG) patterns.
Md Rashad Al Hasan Rony +4 more
doaj +2 more sources
Database Release: PPSDB, a Linked Open Data Knowledge Base for Protist-Prokaryote Symbioses. [PDF]
J Eukaryot MicrobiolABSTRACT As the ecological and evolutionary importance of symbiotic interactions between protists (microbial eukaryotes) and prokaryotes (bacteria and archaea) is better appreciated, keeping an overview of their diversity and the literature becomes a growing and ongoing challenge.
Seah BKB.
europepmc +2 more sources
Intelligent SPARQL Query Generation for Natural Language Processing Systems
IEEE Access, 2021 Developing question answering (QA) systems that process natural language is a popular research topic. Conventionally, when QA systems receive a natural language question, they choose useful words or phrases based on their parts-of-speech (POS) tags.
Yi-Hui Chen, Eric Jui-Lin Lu, Ting-An Ou
doaj +2 more sources
Global cross-database search system for X-ray absorption spectra. [PDF]
J Synchrotron RadiatA portal to cross‐search XAFS databases worldwide has been created and the unification of vocabulary and knowledge behind it are discussed.While the importance of a systematic overview of scientific data and demands toward data integration are increasing, data capitalization and confidentiality are also emerging competitively.
Ishii M +5 more
europepmc +2 more sources
Dynamic Linked Data: A SPARQL Event Processing Architecture
Future Internet, 2018 This paper presents a decentralized Web-based architecture designed to support the development of distributed, dynamic, context-aware and interoperable services and applications. The architecture enables the detection and notification of changes over the
Luca Roffia +2 more
exaly +3 more sources
Applied SciencesGenerating SPARQL queries from natural language questions is challenging in Knowledge Base Question Answering (KBQA) systems. The current state-of-the-art models heavily rely on fine-tuning pretrained models such as T5.
Jiexing Qi +7 more
doaj +2 more sources
Dataset of ontology competency questions to SPARQL-OWL queries translations
Data in Brief, 2020 This data article reports on a new set of 234 competency questions for ontology development and their formalisation into a set of 131 SPARQL-OWL queries.
Jedrzej Potoniec +3 more
doaj +2 more sources
An Approach of Automatic SPARQL Generation for BIM Data Extraction
Applied Sciences, 2020 Generally, building information modelling (BIM) models contain multiple dimensions of building information, including building design data, construction information, and maintenance-related contents, which are related with different engineering ...
Dongming Guo +2 more
doaj +2 more sources
Semantic Resources for Managing Knowledge in Battery Research. [PDF]
ChemSusChemSemantic technology bridges the gap between human researchers and artificial intelligence agents, transforming fragmented battery data into interoperable, machine‐readable knowledge. By linking materials, processes, and performance data, it supports advanced discovery and accelerated battery innovation.
Clark S +7 more
europepmc +2 more sources