Results 41 to 50 of about 680,970 (356)

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

Partial-sum queries in OLAP data cubes using covering codes [PDF]

open access: yes, 1997
A partial-sum query obtains the summation over a set of specified cells of a data cube. We establish a connection between the covering problem in the theory of error-correcting codes and the partial-sum problem and use this connection to devise ...
Ching-tien Ho   +4 more
core   +3 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

Efficient & Effective Selective Query Rewriting with Efficiency Predictions [PDF]

open access: yes, 2017
To enhance effectiveness, a user's query can be rewritten internally by the search engine in many ways, for example by applying proximity, or by expanding the query with related terms.
Macdonald, Craig   +2 more
core   +1 more source

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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