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- è»éäºæž¬ã«ãã£ãŠçæãããåºæºåäœãšå®éã®åäœãšãæ¯èŒããããšã§ãããŒã«ã®ãªããšããã§åŸç¹æ©äŒãäœãéžæãè©äŸ¡
- ããŒã«ãæãããããŒã«ãåããããšããªãæ»æéžæãè©äŸ¡ããå žåçãªïŒãããã¯äºæž¬ãããïŒåããšæ¯èŒããŠãåããåŸç¹æ©äŒã®åµåºã«ã©ã®ããã«å¯äžããããæããã«ããããšã¯ããŸã å°é£ã§ãã
- ææ¡ææ³ã§ã¯
- éžæéã®é¢ä¿ãæ£ç¢ºã«ã¢ãã«åããé·æçãªè»éãäºæž¬ããããšãã§ããã°ã©ãå€åãªã«ã¬ã³ããã¥ãŒã©ã«ãããã¯ãŒã¯ãçšããŠè»éãäºæž¬
- 次ã«ãå®éã®ããŒã¿ãšäºæž¬ãããè»éãšã®æ¢åã®çå€è©äŸ¡ææšã®å·®ã«åºã¥ããå®éã®åããäºæž¬ãããåããšæ¯èŒããŠã©ã®ããã«åŸç¹æ©äŒã«è²¢ç®ããããåºæºãšããŠè©äŸ¡
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- ã€ãã³ãããŒã¿ãšãã©ããã³ã°ããŒã¿
- OBSOã®æ¹è¯çèªäœã¯ããã©ããã³ã°ããŒã¿ã®ã¿ã§å®è£ å¯èœïŒ
- OBSOã®äžã€ã®ç¢ºçãããããç¬ç«ã«æ±ãããšã§ããã©ããã³ã°ããŒã¿ã®ã¿ã§æŽ»çšã§ããããªææšã¯éžã¹ãããšãæåŸ ã§ããã
- P(Cr|D)ïŒåããŒã ã®éžæãããå°ç¹rãšã®è·é¢ãããããŒã ããšã®å°ç¹ã®å æçãè¡šã
- P(Tr|D)ïŒçŸåšã®åº§æšãå¹³åãšããäºæ¬¡å ã¬ãŠã¹ååžãæšæºåå·®ã¯14mã
- P(Sr|D)ïŒåŸç¹ç¢ºçããŽãŒã«ããã®è·é¢ã«å¿ããŠæžå°ããå€ã
- ãããšãã¯æ¢åã®ã¢ãã«ã䜿ããïŒ
å®éšçµæã¯ïŒ
- C-OBSOã¯ã®çµæ
1. Introduction
- ãµãã«ãŒã¯ããŒã«åšãã®ã¹ã¿ãããé€ããŠãããŒã æŠè¡ãéžæã®è©äŸ¡ãè¡ãããšãé£ããã
- æ»æéžæã®å®éçè©äŸ¡ã®ç 究ã¯ãããŒã«ä¿æç¶æ ãšéä¿æç¶æ ã«åãããã
- ä¿æç¶æ
- ã€ãã³ãããŒã¿ãçšããŠåŠç¿ããåŸç¹äºæž¬åšã«ããåŸå€±ç¹ã®æåŸ å€å€å[2]
- ã·ã¥ãŒãã«è³ããã¹ãæå¹æ»æãè©äŸ¡[5][6]
- åŸç¹æåŸ å€ãæåé£æ床ãšã®é¢ä¿ã§ãã¹ã®äŸ¡å€ãè©äŸ¡[7]
- éä¿æ
- å šéžæãšããŒã«ã®äœçœ®æ å ±ããåŸç¹ã«é¢ããããžã·ã§ãã³ã°ãè©äŸ¡
- OBSO[8]
- å ±éã®èª²é¡ãšããŠãäºæž¬ãããå žåçãªåããšæ¯ã¹ãŠãã©ã®ããã«åããšåŸç¹æ©äŒã®åµåºã«å¯äžããããæããã§ãªã
âšã·ã¥ãŒããªã©ã®åžå°ãªããŒã¿ã ãšè©äŸ¡ãå®å®ããªã[10]
âšåŸç¹ãŸã§ã®å€æ§ãªãã¬ãŒã®è©äŸ¡ãå°é£[10]
âšããŒã«ãä¿æããåãåããªãéžæã®è©äŸ¡ãé£ããã
- ãã®ç 究ã§ã¯ãè»éäºæž¬ã§çæãããåºæºã®åããšå®éã®åããæ¯èŒããããšã§ããªãããŒã«ã®åŸç¹æ©äŒãåµåºããéžæãè©äŸ¡ããC-OBSOãææ¡
- ææ¡ææ³ã§ã¯ä»¥äžã®ããšãå®æœããã
- OBSOã®æ çµã¿ã«ããåŸç¹äºæž¬åšããè€æ°ã®å®åè ã®äœçœ®ãæ··åã¬ãŠã¹ååžã§èæ ®ããããã³ã·ã£ã«åŸç¹ã¢ãã«ã«å€æ
- GVRNN[11]ãçšããŠè»éäºæž¬ããOBSOã®è©äŸ¡å€ã®å®éã®å€ãšè»éäºæž¬ã®å€ã®å·®åãåã
- ç 究ã®è²¢ç®
- ãªãããŒã«éžæããåºæºãšãªãäºæž¬ãããåããšæ¯ã¹ãŠã©ãåããšåŸç¹ã«å¯äžãããè©äŸ¡ããç¹
- åŸç¹äºæž¬åšãšããŠOBSOãæ¹è¯ããŠæ··åã¬ãŠã¹ååžãèæ ®ããã¢ãã«ãææ¡ããç¹
- GVRNNã§è»éäºæž¬ããŠãå®éã®è©äŸ¡å€ãšã®å·®åãåã£ãç¹
- C-OBSOã®è©äŸ¡ãçŽæã«åãã瀺ããç¹
âšåºæºãšãªãäºæž¬ãããåãã«å¯ŸããŠã©ã®ããã«åããããšãåŸç¹æ©äŒã®åµåºã«å¯äžããããè©äŸ¡
2. Method
2.1Data
- 2019ã§åŠç¿ãã2020幎ã®ããŒã¿ããã¹ãããŒã¿ãšããã
2.2 ææ¡ãã¬ãŒã ã¯ãŒã¯
2.2.1 OBSO
- OBSOã¯äžã€ã®ç¢ºçã®åæ確ç
- Dã¯è©Šåç¶æ³ïŒããŒã¿ïŒãP(Cr)ã¯ããå°ç¹ã§ã®å æçãP(Tr)ã¯å°ç¹rã§æ¬¡ã®ã€ãã³ããèµ·ãã確çãP(Sr)ã¯å°ç¹rã§ã®åŸç¹ç¢ºç«
- å è¡ç 究ã¯ãP(Cr)P(Tr)P(Sr)ãç¬ç«ã§ç®åºããŠããã®ã§ã
- P(Cr|D)ã¯åããŒã ã®éžæãããå°ç¹rãšã®è·é¢ãããããŒã ããšã®å°ç¹ã®å æçãè¡šã
- P(Tr|D)ã¯çŸåšã®åº§æšãå¹³åãšããäºæ¬¡å ã¬ãŠã¹ååžãæšæºåå·®ã¯14mã
- P(Sr|D)ã¯ãŽãŒã«ããã®è·é¢ã«å¿ããŠæžå°ããå€ã
ãã®ããã«åŒå€åœ¢ã§ãã
2.2.2 ææ¡ææ³ïŒ. ããã³ã·ã£ã«åŸç¹ã¢ãã«ã
- OBSOãæ¡åŒµããŠããŽãŒã«ãžã®è§åºŠãšå®åè ã®äœçœ®ãåæ ããåŸç¹ã¢ãã«ãææ¡
- ã·ã¥ãŒãé»æ¢å¯èœãªå®åéžæã®ã·ã¥ãŒãé»æ¢ååžãçšããŠãå®åè ããããšã·ã¥ãŒãã®äŸ¡å€ãæžå°ããç©çã¢ãã«ã®ãããªããã³ã·ã£ã«ã¢ãã«ãèããã
- åŸç¹äŸ¡å€ã¯ãã·ã¥ãŒã䟡å€ïŒVshotïŒã®ç·å
- Vblockã¯ã·ã¥ãŒããã¯ãã«sãééããã·ã¥ãŒãé»æ¢ååž
- ã·ã¥ãŒãé»æ¢ååžã¯ãã·ã¥ãŒãäœçœ®ãããŽãŒã«åŽã«ååšããå®åéžæã«å²ãåœãŠãæ£èŠååžã足ãåããããã®
- GKã¯äºåã®ã¹ã³ã¢
2.2.3 è»éäºæž¬ã¢ãã«GVRNN[11]
- ã°ã©ããšã³ã³ãŒãããã³ãŒããããã¯ãŒã¯ã«ãããåéžæã®é¢ä¿ãã°ã©ããšããŠã¢ãã«åããããšã§ãéå£ã¹ããŒãã®éžæè»éäºæž¬ãè¡ãã
- RNNã¯å€åãæ§é åãããç³»åããŒã¿ãæ±ãã®ãå°é£ãªã®ã§ãRNNã®é ãç¶æ htã«ãã£ãŠæ¡ä»¶ä»ããããVAEã§ããVRNNãææ¡ãããã
- VRNNã¯RNNã«ç¢ºç«çæœåšå€æ°ztãå ããŠãæœåšå€æ°ã®åŠç¿ã®ããååŽå€ææšè«ãçšããŠæé©åããã
- GNRNNã«ã€ããŠ
- xã¯äœçœ®æ å ±ã®ç³»åã
- ç³»åçã«ã¯ãGVRNNã¯ä»¥äžã®åŒã§æŽæ°ããã
htãšztã¯æ±ºå®è«åã³ç¢ºçè«çãªæœåšå€æ°ãã¢ã¢ãªãp,qã¯ãã©ã¡ãŒã¿ãæã€çæ/æšè«ã¢ãã«ãNã¯æ¬¡ã®ãã©ã¡ãŒã¿ãæã€æ£èŠååž
2.2.4 è»éäºæž¬ãçšããC-OBSO
- ããŒã«éä¿æç¶æ ã®éžæiã®è©äŸ¡ã¯ä»¥äžã®éã
2.3 å®è£ åã³æ€èšŒ
- ããã³ã·ã£ã«åŸç¹ã¢ãã«ã®ãã©ã¡ãŒã¿ã¯ãã£ããã£ã³ã°ãè¡ãªã£ãŠãc=0.47, C=1/130
- ã¢ãã«ã®åŠ¥åœæ§ã¯ãå®éã®åŸç¹ãšç®åºãããåŸç¹ç¢ºç«ãšã®RMSE
- GVRNNã¯ãã©ããã³ã°ããŒã¿ã䜿ã£ãŠåŠç¿ã
- 10Hzã«ããŠã³ãµã³ããªã³ã°
- 6sã®ããŒã¿ã«åºåã£ãŠã41728ãµã³ãã«ã®åŠç¿ããŒã¿ãš4640ã®æ€èšŒããŒã¿ãäœæ
- 1ã¹ãããäºæž¬èª€å·®ã«åºã¥ããŠã¢ãã«ã®åŠç¿ãè¡ã
- æšè«ã®è©äŸ¡ã¯MAE