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:
Apr. 30, 2019
Filed:
Oct. 31, 2014
Beijing Qihoo Technology Company Limited, Beijing, CN;
Beijing Qihoo Technology Company Limited, Beijing, CN;
Abstract
Provided are a method and device for feature extraction. The method comprises: acquiring a batch of black sample files and white sample files from an application layer of a smart terminal operating system; parsing each file, acquiring information structure of all functions contained in each file, and computing a checksum for each function; determining whether or not the files contain the functions corresponding to the checksums, thus compiling statistics on the number of occurrences of each function in the black sample files and the white sample files; and, extracting a black sample feature on the basis of functions occurring only in the black sample files and not occurring in the white sample files, or extracting a white sample feature on a similar basis.