Abstract:In this paper, the remote monitoring system based on GSM is studied, using AT89S52 microcontroller as the central processing unit, wireless communication using GSM short message. The utility model can realize the function of indoor temperature acquisition, remote lighting control, burglar alarm detector. It provides a solution for the realization of intelligent home.

Abstract. Symmetric nonnegative matrix factorization(SNMF) has widely employed in many areas of applications. Symmetric nonnegative positive definition matrix factorization(SNPDMF) is a sub problem of SNMF. Authors proposed a Lanczos-based initialization method for SNPDMF, which can be combined with existing SNPDMF algorithms and achieve higher efficiency. Experiments shows that the SNPDMF algorithm which combined the proposed initialization method can converges to a better solution.

Symmetric nonnegative matrix factorization(SNMF) has widely employed in many areas of applications. Authors proposed a novel Lanczos tridiagonalization-based initialization method for SNMF, which can be combined with existing SNMF algorithms and achieve higher efficiency. Experiments show that the SNMF algorithm which combined the proposed initialization method can converge to a better solution.