Title:
ANALYSIS DEVICE, ANALYSIS METHOD, AND PROGRAM RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2019/130419
Kind Code:
A1
Abstract:
In order to enable a pattern relating to an infrequent event to be detected, this analysis device is provided with: a topic analysis unit which calculates a matrix product of an index matrix, which is generated by performing topic analysis on a matrix to be analyzed, and a dictionary matrix; a residual matrix derivation unit which acquires at least one accumulated matrix product and the matrix to be analyzed, and derives a residual matrix corresponding to a difference between the matrix to be analyzed and the at least one matrix product; a residual matrix refining unit which removes noise from the residual matrix to generate a refined residual matrix; a residual matrix boosting unit which derives an emphasized residual matrix in which each element including an uncaptured topic is emphasized, on the basis of the matrix to be analyzed and the refined residual matrix; and an emphasized residual matrix storage unit which accumulates emphasized residual matrices.
More Like This:
Inventors:
TAKAHASHI TSUBASA (JP)
Application Number:
PCT/JP2017/046608
Publication Date:
July 04, 2019
Filing Date:
December 26, 2017
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
G06F17/16
Foreign References:
| JP2012523025A | 2012-09-27 |
Other References:
TAKAHASHI, TSUBASA ET AL.: "AutoCyclone: Automatic Mining of Cyclic Online Activities with Robust Tensor Factorization", INTERNATIONAL CONFERENCE ON WORLD WIDE WEB (WWW, 7 April 2017 (2017-04-07), pages 213 - 221, XP055557706, doi:10.1145/3038912.3052595
SUN, SANGHO ET AL.: "L-EnsNMF: Boosted Local Topic Discovery via Ensemble of Nonnegative Matrix Factorization", 2016 IEEE 16TH INTERNATIONAL CONFERENCE ON DATA MINING (ICDM, December 2016 (2016-12-01), pages 479 - 488, XP033056010, doi:10.1109/ICDM.2016.0059
JIANG, RUOYI ET AL.: "Anomaly Localization for Network Data Streams with Graph Joint Sparse PCA", PROCEEDINGS OF THE 17TH ACM SIGKDD INTERNATIONAL CONFERENCE ON KNOWLEDGE DISCOVERY AND DATA MINING, August 2011 (2011-08-01), pages 886 - 894, XP55623122
SUN, SANGHO ET AL.: "L-EnsNMF: Boosted Local Topic Discovery via Ensemble of Nonnegative Matrix Factorization", 2016 IEEE 16TH INTERNATIONAL CONFERENCE ON DATA MINING (ICDM, December 2016 (2016-12-01), pages 479 - 488, XP033056010, doi:10.1109/ICDM.2016.0059
JIANG, RUOYI ET AL.: "Anomaly Localization for Network Data Streams with Graph Joint Sparse PCA", PROCEEDINGS OF THE 17TH ACM SIGKDD INTERNATIONAL CONFERENCE ON KNOWLEDGE DISCOVERY AND DATA MINING, August 2011 (2011-08-01), pages 886 - 894, XP55623122
Attorney, Agent or Firm:
SHIMOSAKA Naoki (JP)
Download PDF: