6 Result(s)
within
Computer Science
Data Structures and Information Theory
**ngli Li
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Article
Semi-supervised clustering ensemble based on genetic algorithm model
Clustering ensemble can be regarded as a mathematical optimization problem, and the genetic algorithm has been widely used as a powerful tool for solving such optimization problems. However, the existing resea...
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Article
An algorithm of non-negative matrix factorization with the nearest neighbor after per-treatments
Clustering is a hot topic in machine learning. For high dimension data, nonnegative matrix factorization (NMF) is a crucial technology in clustering. However, NMF has some disadvantages. First, NMF clusters da...
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Article
A lattice-based searchable encryption scheme with the validity period control of files
In recent years, with the dramatic increase in the use of multimedia data, rapid retrieval and sharing of the multimedia data have become major trends. The validity period control function widely used in daily...
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Chapter and Conference Paper
Semi-fragile Watermarking Algorithm Based on Arnold Scrambling for Three-Layer Tamper Localization and Restoration
To protect the content integrity, authenticity and improve the effect of tamper localization and recovery, this paper designs and implements a semi-fragile watermark based on Arnold transformation, which is us...
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Article
City digital pulse: a cloud based heterogeneous data analysis platform
In recent years, increasing attention has been paid to develo** exceptional technologies for efficiently processing massive collection of data. This is essential in the research on smart city, which involves...
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Article
Basic Topological Models for Spatial Entities in 3-Dimensional Space
In recent years, models of spatial relations, especially topological relations, have attracted much attention from the GIS community. In this paper, some basic topologic models for spatial entities in both vec...
