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As a new theory for studying non-linear complex systems, fractal geometry has received much attention recently. Based on the relationship between length of curve and change of scale as well as the idea that a closed curve is formed by a certain amount of unclosed curves, we present an improved Douglas-Peuker method (IDPM) based algorithm. Our algorithm can not only keep the shape and details of the...
Recently, spectral clustering has become one of the most popular modern clustering algorithms which are mainly applied to image segmentation. In this paper, we propose a new spectral clustering algorithm and attempt to use it for outlier detection in dataset. Our algorithm takes the number of neighborhoods shared by the objects as the similarity measure to construct a spectral graph. It can help to...
This research is directed towards automating open-domain multi-document summarization in the framework of Web search. We present a novel approach to achieve this object. Given an unrestricted user query, our system retrieves documents related to and summarizes them. In the process of summarization, the sentences in a given document are scored based on the relevant value and the informativeness value,...
The ability of a robot team to reconfigure itself is useful in many applications: for metamorphic robots to change shape, for swarm motion towards a goal, for biological systems to avoid predators, or for mobile buoys to clean up oil spills. In many situations, auxiliary constraints, such as connectivity between team members and limits on the maximum hop-count, must be satisfied during reconfiguration...
Breast ultrasound (US) in conjunction with digital mammography has come to be regarded as the gold standard for breast cancer diagnosis. While breast US has certain advantages over digital mammography, it suffers from image artifacts such as posterior acoustic shadowing (PAS), presence of which often obfuscates lesion margins. Since classification of lesions as either malignant or benign is largely...
Breast ultrasound (US) in conjunction with digital mammography has come to be regarded as the gold standard for breast cancer diagnosis. While breast US has certain advantages over digital mammography, it suffers from image artifacts such as posterior acoustic shadowing (PAS), presence of which often obfuscates lesion margins. Since classification of lesions as either malignant or benign is largely...
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