Chinese Academy of Sciences

Beijing Qihoo Technology Company Limited

Weichai Power Co., Ltd.

Sumei Wang

Jing Min Xu

Jun Luo

Junfeng Li

Wenwu Wang

Yan Cui

Tianchun Ye

Dehui Tong

Xuguang Tan

Meiyin Yang

Dong Qiu

Guoliang Chu

Yanhui Wang

Yanru Li

Haihao Feng

Feng Han

Zhenyong Fan

Jiaxing Wang

A multi-state memory and a method for manufacturing the same. A magnetoresistive tunnel junction is disposed on a spin-orbit coupling layer, and thermal annealing is performed after dopant ions are injected from a side of the magnetoresistive tunnel junction. The concentration of dopant ions in the magnetoresistive tunnel junction has a gradient variation along the direction that is perpendicular to the direction of the current and within the plane in which the spin-orbit coupling layer is located. Symmetry along the direction perpendicular to the direction of the current is broken. In a case a current flows into the spin-orbit coupling layer, resistance are outputted in multiple states in linearity with the current. The multi-state storage is achieved. It can meet a requirement on hardware of neural network synapses, and is applicable to calculation in a neural network.

Multi-state memory and method for manufacturing the same

The invention discloses a method and device for recognizing an IP address of a specified category, a defense method and system, wherein the method for recognizing an IP address of a specified category comprises the following steps: collecting behavior record data of several IP addresses (S); extracting preprocessing data from the collected behavior record data, the extracted preprocessing data comprising at least address information of an IP address and time information of a behavior (S); analyzing the extracted preprocessing data to obtain behavior-time distribution data of a user using the IP address (S); and recognizing an IP address of a specified category at least according to the behavior-time distribution data of a user using the IP address (S). By employing the invention, an IP address of a certain category can be located more accurately locate and the accuracy for recognizing an IP address is improved.

Method and device for recognizing an IP address of a specified category, a defense method and system

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Beijing, China

Sumei Wang