منابع مشابه
Efficient data hiding with histogram-preserving property
For improving the steganographic security, the data-hiders always hope to lower the distortion level and to preserve the original data distribution. A novel efficient data hiding scheme with a histogram-preserving property is proposed in this work. After decomposing cover samples into a series of binary sequences, a number of candidate vectors representing each secret bit-block are produced, an...
متن کاملJump-Preserving Surface Reconstruction From Noisy Data
A new local smoothing procedure is suggested for jump-preserving surface reconstruction from noisy data. In a neighborhood of a given point in the design space, a plane is fitted by local linear kernel smoothing, giving the conventional local linear kernel estimator of the surface at the point. The neighborhood is then divided into two parts by a line passing through the given point and perpend...
متن کاملAn efficient nonstandard numerical method with positivity preserving property
Classical explicit finite difference schemes are unsuitable for the solution of the famous Black-Scholes partial differential equation, since they impose severe restrictions on the time step. Furthermore, they may produce spurious oscillations in the solution. We propose a new scheme that is free of spurious oscillations and guarantees the positivity of the solution for arbitrary stepsizes. The...
متن کاملPrivacy-Preserving Data Sharing Using Data Reconstruction Based Approach
Data mining services require accurate input data for their results to be meaningful, but privacy concerns may influence users to provide spurious information. To preserve client privacy in the data mining process, a variety of techniques based on random perturbation of data records have been proposed recently. One known fact which is very important in data mining is discovering the association ...
متن کاملProperty Preserving Symmetric Encryption
Processing on encrypted data is a subject of rich investigation. Several new and exotic encryption schemes, supporting a diverse set of features, have been developed for this purpose. We consider encryption schemes that are suitable for applications such as data clustering on encrypted data. In such applications, the processing algorithm needs to learn certain properties about the encrypted dat...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Algorithmica
سال: 2007
ISSN: 0178-4617,1432-0541
DOI: 10.1007/s00453-007-9075-9