Consistent Query Answering for Primary Keys in Datalog
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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
An Efficient Sum Query Algorithm for Distance-Based Locally Dominating Functions
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DOI: 10.1007/s00453-020-00691-w
Abstract: In this paper, we consider the following sum query problem: Given a point set P in $${\mathbb {R}}^d$$ R d , and a distance-based function f ( p , q ) ( i.e., a function… read more here.
Keywords: distance based; sum query; query; epsilon ... See more keywords
Efficient cluster-based top-k query routing with data replication in MANETs
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DOI: 10.1007/s00500-015-1867-2
Abstract: Top-k queries, which retrieve k data items with the best score, have been receiving considerable attention because they can support many real life applications. In this paper, we propose an efficient query routing scheme in… read more here.
Keywords: data replication; top query; data items; query ... See more keywords
Application of processing technology based on skyline query in computer network
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DOI: 10.1007/s00521-021-05931-w
Abstract: With the rapid development of network data communication technology, the complexity of the network environment makes the data in the data stream have uncertain characteristics, and a large number of data streams are generated in… read more here.
Keywords: network; skyline query; method; technology ... See more keywords
Smart scheme: an efficient query execution scheme for event-driven stream processing
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DOI: 10.1007/s10115-018-1195-9
Abstract: With the increase in stream data, a demand for stream processing has become diverse and complicated. To meet this demand, several stream processing engines (SPEs) have been developed which execute continuous queries (CQs) to process… read more here.
Keywords: stream; stream processing; query; event driven ... See more keywords
Coverage-based query subtopic diversification leveraging semantic relevance
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DOI: 10.1007/s10115-020-01470-3
Abstract: Generally, users are reserved in describing their search intention when submitting queries into the search engine. Therefore, a large number of search queries are usually short, ambiguous and tend to have multiple interpretations. With the… read more here.
Keywords: search; semantic relevance; query subtopic; coverage ... See more keywords
Fuzzy searching and routing in unstructured mobile peer-to-peer networks
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DOI: 10.1007/s10586-017-0857-9
Abstract: Peer-to-Peer (P2P) networks offer a scalable solution for efficient query searching and sharing across the unstructured networks. With an increased overhead due to large amount of object searching and routing in unstructured P2P networks, it… read more here.
Keywords: p2p; peer peer; search; time ... See more keywords
An extra spatial hierarchical schema in key-value store
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DOI: 10.1007/s10586-018-2270-4
Abstract: The rapid growth of positioning technologies has resulted in an explosion of spatial data, and how to manage and retrieve such data has become a challenge. To solve this problem, many researchers pay attention to… read more here.
Keywords: index; query; spatial index; spatial hierarchical ... See more keywords
Reverse keyword-based location search on road networks
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DOI: 10.1007/s10707-021-00440-3
Abstract: Reverse top- k keyword-based location query (RT k KL), aims to find the maximum spatial region such that the query object is contained in the result of any top- k spatial keyword query with users’… read more here.
Keywords: based location; keyword based; keyword; query ... See more keywords
An intelligent automatic query generation interface for relational databases using deep learning technique
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DOI: 10.1007/s10772-019-09624-7
Abstract: In the emerging information retrieval world, the selection of keywords and the generation of queries are very critical for the efficient retrieval. The most new-generations database applications request keen interface to upgrade productive connections among… read more here.
Keywords: generation; natural language; query; language ... See more keywords
Quantum Private Query Based on Stable Error Correcting Code in the Case of Noise
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DOI: 10.1007/s10773-019-04295-1
Abstract: In order to protect the privacy of query users and databases, a quantum private query protocol under noisy conditions is proposed and studied. It is a one-way quantum protocol that not only protects user privacy,… read more here.
Keywords: private query; quantum; quantum private; error ... See more keywords