Results 61 to 70 of about 165,392 (160)

A Line Graph-Based Continuous Range Query Method for Moving Objects in Networks

ISPRS International Journal of Geo-Information, 2016
The rapid growth of location-based services has motivated the development of continuous range queries in networks. Existing query algorithms usually adopt an expansion tree to reuse the previous query results to get better efficiency.
Hengcai Zhang, Feng Lu, Jie Chen
doaj   +1 more source

Direction-Aware Nearest Neighbor Query

IEEE Access, 2019
Although the direction aspect is as important as the distance aspect when retrieving spatial objects, the studies of direction-aware queries are limited. The direction-based surrounder query cannot guarantee good directional diversity.
Xi Guo, Xiaochun Yang
doaj   +1 more source

A Multimodel Based Range Query Processing Algorithm for Information Collection in CPS

International Journal of Distributed Sensor Networks, 2015
A multimodel based range query processing algorithm is proposed to solve the information collection task for the CPSs, which utilizes multiple probability models to depict the data distribution of a sensor node.
Guilin Li, Xing Gao, Longjiang Guo, JunCong Lin, Ying Gao, Minghong Liao   +5 more
doaj   +1 more source

Multi-dimensional secure query scheme for fog-enhanced IIoT

Tongxin xuebao, 2020
In view of the fact that most of the existing range query schemes for fog-enhanced IoT cannot achieve both multi-dimensional query and privacy protection,a privacy-preserving multi-dimensional secure query scheme for fog-enhanced IIoT was proposed ...
Yousheng ZHOU, Chang TAN, Fei TANG
doaj   +2 more sources

SLSB-forest:approximate k nearest neighbors searching on high dimensional data

Dianxin kexue, 2017
The study of approximate k nearest neighbors query has attracted broad attention.Local sensitive hash is one of the mainstream ways to solve this problem.Local sensitive hash and its varients have noted the following problems:the uneven distribution of ...
Tu QIAN, Jiangbo QIAN, Yihong DONG, Huahui CHEN   +3 more
doaj   +2 more sources

FurMoLi: A Future Query Technique for Moving Objects Based on a Learned Index

Mathematics
The future query of moving objects involves predicting their future positions based on their current locations and velocities to determine whether they will appear in a specified area.
Jiwei Yang, Chong Zhang, Wen Tang, Bin Ge, Hongbin Huang, Shiyu Yang   +5 more
doaj   +1 more source

LSM HB-Tree: An LSM Tree Augmented With Hierarchical B-Tree for Efficient Range Query Processing on Blockchain Data

IEEE Access
With the rapid proliferation of blockchain technology, the volume of stored data has increased dramatically. Existing blockchain systems typically employ a key–value storage model, which is efficient for single-key lookups but inadequate for ...
Byeongyeong Lee, Kyeongsu Byun, Joonho Kwon   +2 more
doaj   +1 more source

Enabling Scalable Real-Time Sensor Stream Processing Across Decentralized Privacy-Preserving Storage Solutions. [PDF]

Sensors (Basel)
Bisen KS, Verstichel S, Ongenae F.
europepmc   +1 more source

Differential Privacy-Based Location and Trajectory Data Protection for Utility-Preserving Location-Based Services. [PDF]

Sensors (Basel)
Yu Q, Liu F, Meng X, Ma J.
europepmc   +1 more source

ChemGraph-XANES: an agentic framework for XANES simulation and curation. [PDF]

RSC Adv
Grizzi VF, Pham TD, Pretzie LN, Xu J, Keceli M, Liu C.   +5 more
europepmc   +1 more source