Spatial Data and Intelligence
4th International Conference, SpatialDI 2023, Nanchang, China, April 13–15, 2023, Proceedings
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38 Result(s)
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**qiu Xu
Computer Science
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Article
Visual inspection via a global-to-local optimization method for agarwood sticks
Chemical composition analysis, chromatography and spectroscopy are dominate quality evaluation methods for agarwood, which are cumbersome and time-consuming. To facilitate its quality evaluation, a global-to-l...
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Article
Analysis of phase preservation and interferometric offset test in sparse SAR imaging
Sparse synthetic aperture radar (SAR) imaging has emerged as a reliable microwave imaging scheme in the recent decade and excels in down-sampling reconstruction and full-sampling performance improvements such ...
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Chapter and Conference Paper
GaussTS: Towards Time Series Data Management in OpenGauss
The rapid advancement of sensor technology presents novel challenges in the efficient management of large scale time series data. In this demo, we demonstrate a time series data management module named GaussTS...
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Article
NALMO: Transforming Queries in Natural Language for Moving Objects Databases
Moving objects databases (MODs) have been extensively studied due to their wide variety of applications including traffic management, tourist service and mobile commerce. However, queries in natural languages ...
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Chapter and Conference Paper
Predicting Where You Visit in a Surrounding City: A Mobility Knowledge Transfer Framework Based on Cross-City Travelers
The increasingly built intercity transportation enables people to visit surrounding cities conveniently. Hence it is becoming a hot research topic to predict where a traveler would visit in a surrounding city ...
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Chapter and Conference Paper
MOCache: A Cache Management Tool for Moving Object Databases
There is a lack of cache management in moving object databases which is essentially important for system analysis. In addition, users focus on queries in real scenarios, but cache replacement strategy is not c...
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Chapter and Conference Paper
A Comparative Study of Row and Column Storage for Time Series Data
Over the past few decades, researchers have done massive research on data storage structures of relational databases. The existing research mainly focuses on the analysis and optimization of row and column sto...
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Chapter and Conference Paper
Ariadne’s Thread: Using Text Prompts to Improve Segmentation of Infected Areas from Chest X-ray Images
Segmentation of the infected areas of the lung is essential for quantifying the severity of lung disease like pulmonary infections. Existing medical image segmentation methods are almost uni-modal methods base...
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Chapter and Conference Paper
RN-Cluster: A Novel Density-Based Clustering Approach for Road Network Partition
As an indispensable part of urban road management, road network partition is essential for the design and planning of road systems. In this paper, we focus on the problem of urban road network partitioning and...
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Chapter and Conference Paper
Block-Join: A Partition-Based Method for Processing Spatio-Temporal Joins
Spatio-temporal joins are important operations in spatio-temporal databases. The rapid increase in the amount of spatio-temporal objects makes the cost of spatio-temporal joins expensive and requires an effici...
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Book and Conference Proceedings
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Article
Open AccessAn Efficient Algorithm of Star Subgraph Queries on Urban Traffic Knowledge Graph
Knowledge graph has wide applications in the field of computer science. In the knowledge service environment, the information is large and explosive, and it is difficult to find knowledge of common phenomena. ...
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Article
Human motion tracking and 3D motion track detection technology based on visual information features and machine learning
Human motion detection is a major subject of investigation in the field of machine visualization and synthetic integration. It serves a wide and important spectrum of applications in terms of visual surveillan...
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Chapter and Conference Paper
Efficiently Update Disk-Resident Interval Tree
Supporting frequent update throughput is an essential issue in applications that involve monitoring and querying continuous variables. We present an I/O optimal method to efficiently update the disk-resident i...
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Chapter and Conference Paper
Spatial Queries Based on Learned Index
With the popularity of location-based services, the scale of spatial data is increasing. Spatial indexes play an important role in spatial databases, and their performance determines the efficiency of data acc...
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Chapter and Conference Paper
ARCA: A Tool for Area Calculation Based on GPS Data
In this paper, we develop a tool to efficiently and effectively calculate agricultural machinery’s working area based on farming machinery’s GPS data. The tool works as follows. First, we pre-process GPS data ...
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Chapter and Conference Paper
Efficiently Detecting Light Events in Astronomical Temporal Data
Detecting light events is a crucial problem in astronomical temporal data, the task of which is to find gravitational microlensing and flare star among the Milky Way. We propose an efficient method called FLMM...
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Chapter
Multi-attribute Trajectory Data Management
Motivated by the trend of enriching the knowledge about movement data, this chapter introduces representing and querying multi-attribute trajectories in a database system. Such a trajectory contains a sequence...
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Chapter and Conference Paper
Dynamic Shortest Path Queries over Moving Objects on Road Networks
With the development of intelligent mobile devices and communication technology, moving objects have become a hot research topic. This paper studies the moving objects on the road network, and a dynamic shorte...
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Chapter and Conference Paper
Handwritten Style Recognition for Chinese Characters on HCL2020 Dataset
Structural features of Chinese characters provide abundant style information for handwritten style recognition, while prior work on this task has few senses of using structural information. Meanwhile, based on...
