At Crypto’98, Cramer and Shoup [1] proposed a public key cryptosystem that is provably secure against the adaptive chosen ciphertext attacks. Recently, Zhu, Chan, and Deng [2] proposed a variation of Cramer and Shoup’s scheme (the Zhu-Chan-Deng scheme in short) which attempts to reduce Cramer and Shoup’s public key cryptosystem in terms of both the size of the ciphertext and the computation req...

Y.H. Chiu1, M.C. Afeiche2, A.J. Gaskins1,3, P.L. Williams3,4, J.C. Petrozza5, C. Tanrikut6, R. Hauser2,3, and J.E. Chavarro1,3,7,* Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston,MA 02115, USA Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA Department of Epidemiology, Harvard T.H. Chan School of Public Health, Bosto...

Forecasting lake level at various horizons is a critical issue in navigation, water resource planning and catchment management. In this article, multistep ahead predictive models of predicting daily lake levels for three prediction horizons were created. The models were developed using a novel method based on support vector machine (SVM) coupled with firefly algorithm (FA). The FAwas applied to...

Several unsupervised learning topics have been extensively studied with wide applications for decades in the literatures of statistics, signal processing, and machine learning. The topics are mutually related and certain connections have been discussed partly, but still in need of a systematical overview. The article provides a unified perspective via a general framework of independent subspace...