ð§ SomïŒSelf-Organizing MapïŒã¯ãã¢ãã£ã³å±€ãå šçµåå±€ïŒDenseå±€ïŒãæããªããã¥ãŒã©ã«ãããã¯ãŒã¯ã®äžçš®ã§ãã
Somã¯ãäž»ã«ã¯ã©ã¹ã¿ãªã³ã°ãããŒã¿ã®èŠèŠåã«äœ¿çšãããæåž«ãªãåŠç¿ã¢ã«ãŽãªãºã ã§ãå ¥åããŒã¿ãé«æ¬¡å ããäœæ¬¡å ïŒéåžžã¯2次å ïŒã®ãããã«ãããã³ã°ããŸãããã®ããã»ã¹ã§ã¯ããã¥ãŒãã³éã®è·é¢é¢ä¿ãããŒã¿ã®ç¹åŸŽãåæ ãã䌌ãããŒã¿ããããäžã§è¿ãã«é 眮ãããããã«ãªããŸãã
ã¢ãã£ã³å±€ãå šçµåå±€ã¯ãéåžžãæåž«ããåŠç¿ãè¡ããã£ãŒãã©ãŒãã³ã°ã¢ãã«ïŒäŸãã°ç³ã¿èŸŒã¿ãã¥ãŒã©ã«ãããã¯ãŒã¯ãå šçµåãã¥ãŒã©ã«ãããã¯ãŒã¯ïŒã§äœ¿çšãããå ¥åããŒã¿ã«å¯ŸããŠç·åœ¢å€æãéç·åœ¢å€æãé©çšããŸããããã«å¯ŸããŠãSomã¯èªå·±çµç¹åãããã圢æããããã«ç°ãªãã¢ãããŒããåããŸãã
Somã¯èªåŸçãªã·ã¹ãã ãšãããŸããïŒ
SomïŒSelf-Organizing MapïŒã¯ãäžå®ã®æå³ã§ãèªåŸçããšèšããŸããããã®çšèªã®è§£éã«ã¯æ³šæãå¿ èŠã§ããSomã¯ä»¥äžã®ç¹ã§èªåŸçãªç¹åŸŽãæã£ãŠããŸãïŒ
èªå·±çµç¹å: Somã¯èªå·±çµç¹åããã»ã¹ãéããŠããŒã¿ã®ãã¿ãŒã³ãæ§é ãåŠç¿ããŸããããã¯ãå€éšããã®æ瀺çãªæ瀺ãªãã«è¡ãããå éšããã»ã¹ã§ãã
é©å¿æ§: Somã¯å ¥åããŒã¿ã«åºã¥ããŠãããã¯ãŒã¯ã®éã¿ã調æŽããããŒã¿ã®ç¹åŸŽãæããããã«é²åããŸãããã®é©å¿ããã»ã¹ã¯ãç°å¢ïŒããã§ã¯å ¥åããŒã¿ïŒã«å¿ããŠèªåŸçã«è¡ãããŸãã
ãããã以äžã®ç¹ã«ãããŠSomã¯å®å šã«èªåŸçãšã¯èšããŸããïŒ
åæèšå®ãšãã©ã¡ãŒã¿: Somã®å¹æçãªäœ¿çšã«ã¯ãé©åãªãã©ã¡ãŒã¿èšå®ãåæåãå¿ èŠã§ãããããã®èšå®ã¯äžè¬ã«äººéã«ãã£ãŠè¡ãããŸãã
ç£ç£ã®å¿ èŠæ§: Somã¯åŠç¿ããã»ã¹äžã«ç£ç£ã調æŽãå¿ èŠãªå ŽåããããŸããããã¯ãç¹å®ã®å¿çšã«ãããŠæãŸããçµæãåŸãããã«å¿ èŠãªå Žåãããããã§ãã
ãããã£ãŠãSomã¯èªåŸçãªèŠçŽ ãæã¡ãŸããããã®æ©èœãå¹æã¯èšå®ã䜿çšç°å¢ã«å€§ããäŸåããŸãã
Somã¯è€éç³»ã§ããïŒ
Self-Organizing Maps (Som)ã¯ããã®æ§é ãåäœã«ãããŠè€éç³»ã®ç¹åŸŽã瀺ãèŠçŽ ãæã£ãŠããŸãããäžè¬ã«ãè€éç³»ããšã¯ç°ãªãã«ããŽãªã«åé¡ãããŸãã以äžã®ç¹ã§Somã¯è€éç³»ã®ç¹æ§ãæã€å¯èœæ§ããããŸãïŒ
å€æ°ã®çžäºäœçšããèŠçŽ : Somã¯å€ãã®ãã¥ãŒãã³ïŒãŸãã¯ããŒãïŒããæ§æããããããã¯äºãã«çžäºäœçšããŸããããã¯è€éç³»ã®ç¹åŸŽã§ããå€æ°ã®çžäºäœçšããã³ã³ããŒãã³ããæã£ãŠããŸãã
èªå·±çµç¹å: Somã¯ããŒã¿ã«åºã¥ããŠèªå·±çµç¹åãè¡ãèœåãæã£ãŠããŸããèªå·±çµç¹åã¯è€éç³»ã®éèŠãªç¹æ§ã®äžã€ã§ãã
ãããã以äžã®çç±ã§Somã¯äžè¬çãªè€éç³»ãšã¯åºå¥ãããŸãïŒ
äºæž¬å¯èœæ§ãšèŠåæ§: Somã®åäœã¯æ¯èŒçäºæž¬å¯èœã§ãããç¹å®ã®ã«ãŒã«ãã¢ã«ãŽãªãºã ã«åºã¥ããŠããŸããäžæ¹ãè€éç³»ã¯ãã°ãã°äºæž¬äžå¯èœãªæåãã«ãªã¹çãªåãã瀺ããŸãã
èšèšãšå¶åŸ¡: Somã¯ç¹å®ã®ç®çã®ããã«èšèšããããã®æ¯ãèãã¯äººéã«ãã£ãŠããçšåºŠå¶åŸ¡ãããŸããå¯Ÿç §çã«ãå€ãã®è€éç³»ïŒäŸãã°ãçæ ç³»ãçµæžã·ã¹ãã ïŒã¯èªç¶çºççã§ãäžå€®éæš©çãªå¶åŸ¡ãèšèšãååšããŸããã
Somã¯è€éç³»ã®ããã€ãã®ç¹æ§ãæã¡ãŸãããããèªäœãè€éç³»ãšåŒã°ããããšã¯å°ãªãã§ããããããSomã¯è€éç³»ã®ç 究ãã¢ããªã³ã°ã«åœ¹ç«ã€ããŒã«ãšããŠäœ¿çšãããããšããããŸãã
åæããã®ãsomã§ãè€éç³»ã¯åæããªãå ŽåããããŸãã
ã¯ãããã®éãã§ããSelf-Organizing Maps (Som)ãšè€éç³»ã¯ãåæã®æ§è³ªã«ãããŠéèŠãªéãããããŸãã
Somã®åæ: Somã¯èšèšäžãç¹å®ã®ç¶æ ã«åæããããã«ãªã£ãŠããŸããåŠç¿ããã»ã¹ã®éã«ããããã¯ãŒã¯ã¯å ¥åããŒã¿ã®ç¹åŸŽãåæ ããå®å®ããç¶æ ã«åãã£ãŠé²åããŸãããã®åæã¯ãããŒã¿ã®ç¹åŸŽãè¡šãæå³ã®ãããããã³ã°ãäœæããããšãç®çã§ãã
è€éç³»ã®éåææ§: å¯Ÿç §çã«ãè€éç³»ã¯å¿ ãããåæãããšã¯éããŸãããè€éç³»ã¯å€ãã®å Žåãéç·åœ¢ã®çžäºäœçšããã£ãŒãããã¯ã«ãŒãããããŠã«ãªã¹çãªæåã瀺ããããäºæž¬äžå¯èœãªåããæç¶çãªé²åãããããšããããŸããããã«ãããè€éç³»ã¯äžè²«ããåæç¶æ ã«éããããšãå°ãªããåžžã«å€åãç¶ããããšãå€ãã§ãã
ãã®ããã«ãSomãšè€éç³»ã¯ãã·ã¹ãã ã®æ¯ãèããæçµç¶æ ã«ãããŠæ ¹æ¬çãªéããæã£ãŠããŸããSomã¯æ¯èŒçäºæž¬å¯èœã§å¶åŸ¡å¯èœãªã·ã¹ãã ã§ãããè€éç³»ã¯äžèŠåã§äºæž¬äžå¯èœãªæåã瀺ãããšãç¹åŸŽã§ãã
ãé¡ãèŽããŸã