Results 21 to 30 of about 152,623 (305)

Performance of Graph and Relational Databases in Complex Queries

open access: yesApplied Sciences, 2022
In developing NoSQL databases, a major motivation is to achieve better efficient query performance compared with relational databases. The graph database is a NoSQL paradigm where navigation is based on links instead of joining tables.
Petri Kotiranta   +2 more
doaj   +1 more source

Text-Image Matching for Cross-Modal Remote Sensing Image Retrieval via Graph Neural Network

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
The rapid development of remote sensing (RS) technology has produced massive images, which makes it difficult to obtain interpretation results by manual screening. Therefore, researchers began to develop automatic retrieval method of RS images. In recent
Hongfeng Yu   +6 more
doaj   +1 more source

marmap: A package for importing, plotting and analyzing bathymetric and topographic data in R. [PDF]

open access: yesPLoS ONE, 2013
In this communication we introduce marmap, a package designed for downloading, plotting and manipulating bathymetric and topographic data in R. marmap can query the ETOPO1 bathymetry and topography database hosted by the NOAA, use simple latitude ...
Eric Pante, Benoit Simon-Bouhet
doaj   +1 more source

Query-by-Example On-Device Keyword Spotting [PDF]

open access: yes2019 IEEE Automatic Speech Recognition and Understanding Workshop (ASRU), 2019
A keyword spotting (KWS) system determines the existence of, usually predefined, keyword in a continuous speech stream. This paper presents a query-by-example on-device KWS system which is user-specific. The proposed system consists of two main steps: query enrollment and testing.
Kim, Byeonggeun   +4 more
openaire   +2 more sources

A Query Language for Data Access in Ubiquitous Environments

open access: yesCLEI Electronic Journal, 2018
Recent progress in ubiquitous computing technology is allowing development of new and so- phisticated applications that are now able to store very large data on the mobile device itself, besides access data stored remotely. Thus emerges the need to query
Cristiano Silveira   +2 more
doaj   +1 more source

gmos: Rapid Detection of Genome Mosaicism over Short Evolutionary Distances. [PDF]

open access: yesPLoS ONE, 2016
Prokaryotic and viral genomes are often altered by recombination and horizontal gene transfer. The existing methods for detecting recombination are primarily aimed at viral genomes or sets of loci, since the expensive computation of underlying ...
Mirjana Domazet-Lošo   +1 more
doaj   +1 more source

Bridging the Gap: Query by Semantic Example [PDF]

open access: yesIEEE Transactions on Multimedia, 2007
A combination of query-by-visual-example (QBVE) and semantic retrieval (SR), denoted as query-by-semantic-example (QBSE), is proposed. Images are labeled with respect to a vocabulary of visual concepts, as is usual in SR. Each image is then represented by a vector, referred to as a semantic multinomial, of posterior concept probabilities.
Rasiwasia, Nikhil   +2 more
openaire   +2 more sources

Query-by-Example Speech Search Using Recurrent Neural Acoustic Word Embeddings With Temporal Context

open access: yesIEEE Access, 2019
Acoustic word embeddings (AWEs) have been popular in low-resource query-by-example speech search. They are using vector distances to find the spoken query in search content, which has much lower computation than the conventional dynamic time warping (DTW)
Yougen Yuan   +4 more
doaj   +1 more source

Querying Knowledge Graphs by Example Entity Tuples [PDF]

open access: yesIEEE Transactions on Knowledge and Data Engineering, 2015
We witness an unprecedented proliferation of knowledge graphs that record millions of entities and their relationships. While knowledge graphs are structure-flexible and content rich, they are difficult to use. The challenge lies in the gap between their overwhelming complexity and the limited database knowledge of non-professional users.
Jayaram, Nandish   +4 more
openaire   +2 more sources

A locally weighted learning method based on a data gravitation model for multi-target regression

open access: yesInternational Journal of Computational Intelligence Systems, 2018
Locally weighted regression allows to adjust the regression models to nearby data of a query example. In this paper, a locally weighted regression method for the multi-target regression problem is proposed.
Oscar Reyes   +3 more
doaj   +1 more source

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