çå¼ P(Aâ©B) = P(A|B)P(B) ã®æ±ºå®æ¨ã«ããå³ç¤ºã æ¡ä»¶ä»ã確çï¼ãããããã¤ããããã¤ãè±: conditional probabilityï¼ã¯ãããäºè±¡ B ãèµ·ããã¨ããæ¡ä»¶ä¸ã§ã®å¥ã®äºè±¡ A ã®ç¢ºçã®ãã¨ããããæ¡ä»¶ä»ã確ç㯠P(A|B) ã¾ã㯠PB(A) ã®ããã«è¡¨ããã[1]ãæ¡ä»¶ä»ã確ç P(A|B) ã¯ãã°ãã°ãB ãèµ·ãã£ãã¨ãã® A ã®ï¼æ¡ä»¶ä»ãï¼ç¢ºçããæ¡ä»¶ B ã®ä¸ã§ã® A ã®ç¢ºçããªã©ã¨è¡¨ç¾ãããããªãè±æã«ããã¦ã¯éä¾ãâprobability of A given Bâ ã¾ã㯠âprobability of A under the condition Bâ ã¨è¡¨ç¾ãããã å®ç¾©[ç·¨é] A ããã³ B ãäºè±¡ã¨ããP(B) > 0 ã¨ããã¨ãB ã«ããã A ã®æ¡ä»¶ä»ã確ç㯠ããã㯠ã«ããå®ç¾©ããã[2][3]ã 測度è«çå®ç¾©[ç·¨é]
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