Feature matching method and device
A feature matching and feature library technology, applied in the field of communication, can solve problems such as low matching speed, and achieve the effects of improving speed, low storage capacity, and reducing complexity.
Active Publication Date: 2011-08-10
深圳市珍爱网信息技术有限公司
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[0005] Embodiments of the present invention provide a feature matching method and device to solve the problem of low feature matching speed in the prior art and improve the feature matching speed
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[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0033] figure 2 It is a flow chart of the first embodiment of the feature matching method of the present invention, such as figure 2 As shown, the feature matching method includes:
[0034] S101. Preprocessing the original state machine compiled from the features of the original feature library to separate and delete the jumpback edge to obtain a new feature library;
[0035] The original feature library of the feature matching device includes feature rule...
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The embodiment of the invention relates to a feature matching method and device. The method comprises the following steps of: carrying out preprocessing of separating and deleting a rebound edge on an original state machine formed by compiling features of an original feature library to obtain a novel feature library; according to the novel feature library and the current matching information, predicting a state related to matching in the novel feature library and the number of characters to be matched, which are taken out from input data each time; and acquiring feature data from the novel feature library according to the state related to matching in the novel feature library and matching the feature data with the number of characters to be matched, which are taken out from the input data each time. In the embodiment of the invention, compared with the original feature library, the novel feature library has lower storage capacity, controllable activated state and high linearization degree so that the complexity of feature matching is reduced; after the feature data is acquired from the novel feature library according to the state related to matching in the novel feature library, the taken input data can be matched so as to realize multi-character matching and improve the feature matching speed.
Description
technical field [0001] The embodiments of the present invention relate to the technical field of communications, and in particular to a feature matching method and device. Background technique [0002] With the rapid development of the Internet, there are more and more types of network services, and new services emerge in an endless stream and become more and more complex, which brings opportunities and challenges to telecom operators. How to effectively manage, control and operate the network has become an important issue. question. A deep packet inspection (Deep Packet Inspection; DPI for short) technology is increasingly occupying an important position. DPI technology is gradually integrating capabilities such as user management, security control, and fine service control to realize functions such as dynamic perception of various services, policy control, and network and service security, reducing operators' management costs and enriching Business content and revenue gr...
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IPC IPC(8): H04L29/06H04L12/56
Inventor 曾佳周咸春王晓波吴富强
Owner 深圳市珍爱网信息技术有限公司