13 Result(s)
within
**qiu Xu
Artificial Intelligence
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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
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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Article
Moving Objects with Transportation Modes: A Survey
In this article, we survey the main achievements of moving objects with transportation modes that span the past decade. As an important kind of human behavior, transportation modes reflect characteristic movem...
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Chapter and Conference Paper
A Mobile Phone Data Visualization Tool for People Flow Analysis
Mobile phone data contain the information of each interaction between mobile phones and telecommunication infrastructures. These data provide a wealth of information about urban dynamics and human activities s...
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Chapter and Conference Paper
An Efficient Provably Secure Password-Based Authenticated Key Agreement
Password-based authenticated key agreement enables several parties to establish a shared cryptographically strong key over an insecure network using short low entropy passwords. This authenticated key agreemen...
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Article
Reverse Furthest Neighbors Query in Road Networks
Given a road network G = (V,E), where V (E) denotes the set of vertices(edges) in G, a set of points of interest P and a query point q residing in G, the reverse furthest neighbors (Rfn ...
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Chapter and Conference Paper
A System for Querying and Displaying Typed Intervals
We consider that a database stores a set of typed intervals, each of which defines start and end points, a weight and a type. Typed intervals enrich the data representation and support applications involving d...
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Chapter and Conference Paper
Detect Tracking Behavior Among Trajectory Data
Due to the continuing improvements in location acquisition technology, a large population of GPS-equipped moving objects are tracked in a server. In emergency applications, users may want to detect whether a t...
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Chapter and Conference Paper
A Tool for 3D Visualizing Moving Objects
Visually representing query results and complex data structures in a database system provides a convenient way for users to understand and analyze the data. In this demo, we will present a tool for 3D visualiz...
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Chapter and Conference Paper
Secure Digital Content Management in Library
With the advancement of digital technologies and networks, all kinds of digital contents are stored in library and the registered users can use them in an easy way. However, piracy becomes increasingly rampant...
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Chapter and Conference Paper
Image Restoration Based on an AdaBoost Algorithm
A novel image restoration method is developed based an AdaBoost algorithm. A sliding-window method is employed to extract image features and to obtain the input and output of BP neural network. An AdaBoost alg...
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Chapter and Conference Paper
Research on Reversible Visible Watermarking Technique
With the advancement of digital technologies and networks, all kinds of digital contents are distributed over Internet. However, piracy becomes increasingly rampant as customers can easily duplicate and redist...
