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   Articles with "query answering" as a keyword



Consistent Query Answering for Primary Keys in Datalog

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recommendations! Published in 2020 at "Theory of Computing Systems"

DOI: 10.1007/s00224-020-09985-6

Abstract: We study the complexity of consistent query answering on databases that may violate primary key constraints. A repair of such a database is any consistent database that can be obtained by deleting a minimal set… read more here.

Keywords: query answering; consistent query; primary keys; query ... See more keywords

ADS-BI: Compressed Indexing of ADS-B Data

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recommendations! Published in 2018 at "IEEE Transactions on Intelligent Transportation Systems"

DOI: 10.1109/tits.2017.2784371

Abstract: The introduction of ADS-B, a satellite-based aircraft tracking technology, and the increasing installation of ADS-B receiver stations around the globe eases the tracking of aircraft, compared with traditional solutions using secondary radar. Given the large… read more here.

Keywords: ads compressed; ads data; query answering; compressed indexing ... See more keywords

Efficient Datalog Rewriting for Query Answering in TGD Ontologies

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recommendations! Published in 2023 at "IEEE Transactions on Knowledge and Data Engineering"

DOI: 10.1109/tkde.2021.3111011

Abstract: Tuple-generating dependencies (TGDs) are an expressive constraint language for ontology-mediated query answering and thus query answering is of high complexity. Existing systems based on first-order rewriting methods can lead to queries too large for DBMS… read more here.

Keywords: efficient datalog; datalog rewriting; rewriting query; query answering ... See more keywords

An Efficient Fuzzy System for Complex Query Answering on Knowledge Graphs

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recommendations! Published in 2025 at "IEEE Transactions on Knowledge and Data Engineering"

DOI: 10.1109/tkde.2025.3581959

Abstract: Complex Query Answering (CQA) on knowledge graphs is a fundamental yet challenging task, which can be formalized as answering a subset of first-order logic queries containing logical conjunction, disjunction, negation, and existential quantifiers. Recent research… read more here.

Keywords: system; query answering; efficient fuzzy; fuzzy system ... See more keywords
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Deploying spatial-stream query answering in C-ITS scenarios

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recommendations! Published in 2021 at "Semantic Web"

DOI: 10.3233/sw-200408

Abstract: Cooperative Intelligent Transport Systems (C-ITS) play an important role for providing the means to collect and exchange spatio-temporal data via V2X-based communication between vehicles and the infrastructure, which will become a central enabler for road… read more here.

Keywords: ontology; spatial stream; deploying spatial; answering scenarios ... See more keywords

DIAERESIS: RDF data partitioning and query processing on SPARK

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recommendations! Published in 2024 at "Semantic Web"

DOI: 10.3233/sw-243554

Abstract: The explosion of the web and the abundance of linked data demand effective and efficient methods for storage, management, and querying. Apache Spark is one of the most widely used engines for big data processing,… read more here.

Keywords: data partitioning; query answering; diaeresis; query ... See more keywords