Results 11 to 20 of about 388,640 (259)
Semantic acyclicity on graph databases [PDF]
Proceedings of the 32nd ACM SIGMOD-SIGACT-SIGAI symposium on Principles of database systems, 2013 Summary: It is known that unions of acyclic conjunctive queries (CQs) can be evaluated in linear time, as opposed to arbitrary CQs, for which the evaluation problem is NP-complete. It follows from techniques in the area of constraint-satisfaction problems that semantically acyclic unions of CQs -- i.e., unions of CQs that are equivalent to a union of ...
Barceló Baeza, Pablo +2 more
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Experimental Evaluation of Graph Databases: JanusGraph, Nebula Graph, Neo4j, and TigerGraph
Applied Sciences, 2023 NoSQL databases were created with the primary goal of addressing the shortcomings in the efficiency of relational databases, and can be of four types: document, column, key-value, and graph databases.
Jéssica Monteiro +2 more
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Journal of Open Humanities Data, 2023 This paper attempts to develop a pipeline designed to convert graphical PDF files of the newspaper Zviazda into usable text data in the Belarusian language with search and visualization options.
Loïc Boizou
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Context-free path querying with all-path semantics using matrices with sets of intermediate vertices [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2021 The study considers the problem of context-free path querying with all-path query semantics. This problem consists in finding all paths of the graph, the labels on the edges of which form words from the language generated by the input context-free ...
Rustam Sh. Azimov, Semyon V. Grigorev
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IEEE Access, 2020 Blockchains are being recently used as a supporting technology framework for decentralized applications requiring functionalities such as exchange of value through tokens, cryptocurrency and smart contracts.
Konstantinos Tsoulias +4 more
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A Knowledge Graph Framework for Dementia Research Data
Applied Sciences, 2023 Dementia disease research encompasses diverse data modalities, including advanced imaging, deep phenotyping, and multi-omics analysis. However, integrating these disparate data sources has historically posed a significant challenge, obstructing the ...
Santiago Timón-Reina +4 more
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Journal of Advanced Engineering and Computation, 2017 Comparing graph databases with traditional,e.g., relational databases, some important database features are often missing there. Particularly, a graph database schema including integrity constraints is mostly not explicitly defined, also a conceptual ...
Jaroslav Pokorny
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Efficient Subgraph Similarity Search on Large Probabilistic Graph Databases [PDF]
, 2012 Many studies have been conducted on seeking the efficient solution for subgraph similarity search over certain (deterministic) graphs due to its wide application in many fields, including bioinformatics, social network analysis, and Resource Description ...
Chen, Lei +3 more
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Standard Framework for Comparison of Graph Partitioning Techniques
JISR on Computing, 2015 Graph Partitioning is used to distribute graph partitions across nodes for processing. It is very important in the pre-processing step for distributed graph processing.
Mudasser Iqbal, Saif-ur-Rahman
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Towards a Semantics-Based Recommendation System for Cultural Heritage Collections
Applied Sciences, 2023 While the use of semantic technologies is now commonplace in the cultural heritage sector and several semantically annotated cultural heritage datasets are publicly available, there are few examples of cultural portals that exploit these datasets and ...
Jiayu Li, Antonis Bikakis
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