Results 261 to 270 of about 13,582,146 (349)

Learned Index for Spatial Queries

2019 20th IEEE International Conference on Mobile Data Management (MDM), 2019
With the pervasiveness of location-based services (LBS), spatial data processing has received considerable attention in the research of database system management.
Hai-Xin Wang, Xiaoyi Fu, Jian-Liang Xu, Hua Lu   +3 more
semanticscholar   +4 more sources

A new remote sensing index for assessing the spatial heterogeneity in urban ecological quality: A case from Fuzhou City, China

Ecological Indicators, 2018
Remote sensing is unique in its ability to record a variety of spatial and temporal data on land surfaces with complete coverage, especially at larger spatial scales, and it has been shown to be effective for rapidly recognizing spatio-temporal changes ...
Hanqiu Xu, Rongzu Qiu
exaly   +2 more sources

The role of location indexes in spatial perception: a sketch of the FINST spatial-index model.

Cognition, 1989
This paper hypothesizes a resource-limited mechanism, called a FINST, for individuating or indexing visual features, as distinct from encoding their type or location. FINSTs have the property that they index features in a way that is transparent to their retinal location, and hence under certain conditions succeed in "pointing to" scene locations.
Z. Pylyshyn
semanticscholar   +3 more sources

Spatial-Index Modulation Based Orthogonal Time Frequency Space System in Vehicular Networks

IEEE transactions on intelligent transportation systems (Print), 2023
In this paper, a spatial-index modulation (SIM) based orthogonal time frequency space (OTFS) system, named SIM-OTFS, is proposed to enhance the effectiveness and the reliability of high mobility vehicular networks in intelligent transportation systems ...
Yingchao Yang, Zhiquan Bai, K. Pang, Shuaishuai Guo, Haijun Zhang, K. Kwak   +5 more
semanticscholar   +1 more source