Results 21 to 30 of about 650,464 (329)

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

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.
Byeonggeun Kim   +4 more
openaire   +2 more sources

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

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

Strategies for Searching Video Content with Text Queries or Video Examples [PDF]

open access: yes, 2016
The large number of user-generated videos uploaded on to the Internet everyday has led to many commercial video search engines, which mainly rely on text metadata for search. However, metadata is often lacking for user-generated videos, thus these videos
Chang, Xiaojun   +15 more
core   +1 more source

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

k-Nearest Neighbour Classifiers: 2nd Edition (with Python examples) [PDF]

open access: yes, 2020
Perhaps the most straightforward classifier in the arsenal or machine learning techniques is the Nearest Neighbour Classifier -- classification is achieved by identifying the nearest neighbours to a query example and using those neighbours to determine ...
Cunningham, Padraig, Delany, Sarah Jane
core   +3 more sources

Audio Query by Example Using Similarity Measures between Probability Density Functions of Features

open access: yesEURASIP Journal on Audio, Speech, and Music Processing, 2010
This paper proposes a query by example system for generic audio. We estimate the similarity of the example signal and the samples in the queried database by calculating the distance between the probability density functions (pdfs) of their frame-wise ...
Marko Helén, Tuomas Virtanen
doaj   +1 more source

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