Π tinakambirana za kulosera kwanthawi. Kupitiliza momveka bwino kungakhale nkhani yokhudza kuzindikira zolakwika.
Ntchito
Kuzindikira kwa anomaly kumagwiritsidwa ntchito m'malo monga:
1) Kuneneratu za kuwonongeka kwa zida
Chifukwa chake, mu 2010, ma centrifuges aku Iran adawukiridwa ndi kachilombo ka Stuxnet, komwe kudapangitsa kuti zidazo zisamagwire bwino ntchito ndikulepheretsa zida zina chifukwa chakuvala mwachangu.
Ngati ma algorithms odziwika bwino akadagwiritsidwa ntchito pazida, kulephera kukanapewedwa.
Kusaka kwa anomalies pakugwiritsa ntchito zida sikumagwiritsidwa ntchito m'makampani a nyukiliya, komanso muzitsulo komanso kugwiritsa ntchito ma turbines a ndege. Ndipo m'madera ena omwe kugwiritsa ntchito zolosera zam'tsogolo ndizotsika mtengo kusiyana ndi zomwe zingatheke chifukwa cha kuwonongeka kosayembekezereka.
2) Kuneneratu zachinyengo
Ngati ndalama zachotsedwa ku khadi lomwe mumagwiritsa ntchito ku Podolsk ku Albania, zomwe zikuchitikazi zingafunikire kufufuzidwanso.
3) Kuzindikiritsa machitidwe a ogula omwe sali bwino
Ngati makasitomala ena awonetsa khalidwe lachilendo, pangakhale vuto lomwe simukulidziwa.
4) Kuzindikiritsa kufunikira kwachilendo ndi katundu
Ngati malonda mu sitolo ya FMCG atsika pansi pa nthawi yodalirika ya zomwe zanenedweratu, ndi bwino kupeza chifukwa cha zomwe zikuchitika.
Njira zodziwira anomalies
1) Thandizani Vector Machine yokhala ndi One Class One-Class SVM
Zoyenera pamene deta mu seti yophunzitsira ikutsatira kugawidwa kwabwino, koma mayeso a mayeso ali ndi zolakwika.
Makina othandizira amtundu umodzi amapanga malo osakhala amtundu kuzungulira komwe adachokera. N'zotheka kukhazikitsa malire a cutoff omwe deta imaonedwa kuti ndi yodabwitsa.
Kutengera zomwe gulu lathu la DATA4 lakumana nalo, One-Class SVM ndiye njira yomwe imagwiritsidwa ntchito kwambiri pothana ndi vuto lopeza zovuta.
2) Njira yopatula nkhalango
Ndi njira "yachisawawa" yopangira mitengo, mpweya umalowa m'masamba kumayambiriro (pamtengo wozama), i.e. zotulutsa ndizosavuta "kuzipatula." Kudzipatula kwazinthu zosazolowereka kumachitika pakubwereza koyamba kwa algorithm.
3) Envelopu yozungulira komanso njira zowerengera
Amagwiritsidwa ntchito pamene deta imagawidwa kawirikawiri. Kuyandikira muyeso ndi mchira wa kusakaniza kwa magawo, mtengo wake ndi wodabwitsa kwambiri.
Njira zina zowerengera zitha kuphatikizidwanso m'kalasili.
Chithunzi kuchokera dyakonov.org
4) Njira zama metric
Njira zimaphatikizapo ma aligorivimu monga oyandikana nawo a k-apafupi, oyandikana nawo a k-wapafupi, ABOD (kuzindikira kwapang'onopang'ono) kapena LOF (local outlier factor).
Zoyenera ngati mtunda wapakati pazikhalidwe muzofanana kapena zokhazikika (kuti musayese boa constrictor mu zinkhwe).
K-oyandikana nawo oyandikana nawo algorithm amalingalira kuti zinthu zabwinobwino zimapezeka m'dera linalake la danga lamitundumitundu, ndipo mtunda wopita ku zosokoneza udzakhala waukulu kuposa wolekanitsa hyperplane.
5) Njira zamagulu
Chofunikira cha njira zamagulu ndikuti ngati mtengo uli wochuluka kuposa kuchuluka kwina kutali ndi malo amagulu, mtengowo ukhoza kuonedwa ngati wodabwitsa.
Chinthu chachikulu ndikugwiritsa ntchito algorithm yomwe imagwirizanitsa bwino deta, zomwe zimadalira ntchito yeniyeni.
6) Njira yachigawo chachikulu
Zoyenera komwe mayendedwe akusintha kwakukulu kwa kubalalitsidwa akuwunikiridwa.
7) Ma aligorivimu kutengera kulosera kwanthawi
Lingaliro ndilakuti ngati mtengo ukutsika kuposa nthawi yolosera, mtengowo umawonedwa ngati wodabwitsa. Kuti mulosere mndandanda wanthawi, ma algorithms monga kusalaza katatu, S(ARIMA), boosting, ndi zina zambiri.
Zolosera zanthawi zolosera zanthawi zidakambidwa m'nkhani yapitayi.
8) Kuphunzira koyang'aniridwa (kutsika, kugawa)
Deta ikalola, timagwiritsa ntchito ma aligorivimu kuyambira kutsata mizere kupita kumanetiweki obwereza. Tiyeni tiyeze kusiyana pakati pa zoloserazo ndi mtengo weniweniwo, ndipo titsimikize kuti detayo yapatuka pati pamlingo wanthawi zonse. Ndikofunikira kuti ma aligorivimu ali ndi kuthekera kokwanira kophatikiza zonse komanso kuti maphunzirowo asakhale ndi zofunikira.
9) Mayesero achitsanzo
Tiyeni tiyandikire vuto lofufuza zolakwika ngati vuto lofufuza malingaliro. Tiyeni tiwongole matrix athu pogwiritsa ntchito SVD kapena makina opangira zinthu, ndikutenga zomwe zili mu matrix atsopano omwe ndi osiyana kwambiri ndi oyambawo ngati odabwitsa.
Chithunzi kuchokera dyakonov.org
Pomaliza
M'nkhaniyi, tawonanso njira zazikulu zodziwira anomaly.
Kupeza zolakwika m'njira zambiri kumatchedwa luso. Palibe algorithm yabwino kapena njira, kugwiritsa ntchito komwe kumathetsa mavuto onse. Nthawi zambiri njira zingapo zimagwiritsidwa ntchito kuthetsa vuto linalake. Kuzindikira kwachilendo kumachitika pogwiritsa ntchito makina othandizira amtundu umodzi, kupatula nkhalango, njira zama metric ndi masango, komanso kugwiritsa ntchito zida zazikulu ndi kulosera kwanthawi.
Ngati mukudziwa njira zina, lembani za iwo mu ndemanga ku nkhaniyo.
Source: www.habr.com