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In this paper, we systematically explore the problem of frequent subtree mining and present a novel pruning strategy, F2SC (frequent 2-subtree checking), which can be used in all Apriori-like subtree mining algorithms. With a little more memory overhead of keeping frequent 2-subtrees list, F2SC can prunes the invalid candidate which contains infrequent 2-subtree by checking the frequent 2-subtrees...
In e-science environment researchers can submit complex tasks as scientific workflows. However, because the network may be blocked or even interrupted sometimes, it can hinder the researchers to submit tasks, as well as the overload on the server. Additionally, many tasks submitted by researchers may use the same resources, which may result in the overload of the specific resources. Meanwhile, some...
Identification and verification of a video clip via its hash find application in broadcast monitoring. For broadcast monitoring, a novel method for computing a robust hash from video clips, being secret key based, is proposed based on the 3-D Discrete Wavelet Transform (3D-DWT) and median quantization. The proposed hash function is shown to be remarkably robust against video modifications and lossy...
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