公开(公告)号：WO2019156739A1

公开(公告)日：2019-08-15

申请号：PCT/US2018/065281

申请日：2018-12-12

Applicant: APPLE INC.

Inventor： SAXENA, Sumit ,  CHAWDA, Kushal M. ,  JUANG, Ben-Heng ,  MATHIAS, Arun G. ,  GUTTA, Sairam T.

IPC: G06F21/55 ,  G06F11/34 ,  H04L29/06

Abstract: The subject technology extracts features from each log line of a log file. The subject technology determines, based on the features, a sequence of log lines. The subject technology determines probabilities of log lines occurring within a window of time from a respective log line from the sequence of log lines, and determines probabilities of periods of time within the window of time that a next log line will occur after the respective log line. The subject technology segments log lines from the log file into sequences of log lines based on the probabilities of the set of log lines occurring within the window of time and the probabilities of periods of time that the next log line occurs after the respective log line. The subject technology determines a predicted subsequent log line, and detects an anomaly when an actual subsequent log line differs from the predicted subsequent log line.