The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 05, 2022
Filed:
Dec. 24, 2018
Nsfocus Technologies Group Co., Ltd., Beijing, CN;
Nsfocus Technologies, Inc., Beijing, CN;
NSFOCUS TECHNOLOGIES GROUP CO., LTD., Beijing, CN;
NSFOCUS TECHNOLOGIES, INC., Beijing, CN;
Abstract
Disclosed are a method for extracting a feature string, a device, a network apparatus, and a storage medium. The method comprises: determining, for each candidate feature string, a transition probability for each pair of adjacent characters in the candidate feature string according to a first-order Markov transition probability matrix; detennining a transition entropy value of the candidate feature string according to the transition probability of each pair of adjacent characters and the logarithm of the transition probability; and labeling a candidate feature string having a transition entropy value greater than a pre-determined threshold as a first usable feature string, and using a valid first usable feature string as an extracted target feature string.