ããã«ã¡ã¯ãkikedaã§ãã ä»åã¯ãgem annotateãç´¹ä»ãããã¨æãã¾ããå°ãã¿ã§ãã rails appãéçºãã¦ããã¨é »ç¹ã«ãrake routeã§ã«ã¼ãã£ã³ã°ã確èªããããdbããtableã®schemaã確èªãããã¨ã¯ãå¤ã ããã¨æãã¾ãããç§ã¯ããããã£ãæéãçãã®ã«annotateãå©ç¨ãã¦ãã¾ãã ãã ããµãã¼ããã¦ããruby, railsã®versionã«ã¤ãã¦ãREADMEã«ã¯è¨è¼ããã¦ããªãã®ã§ãruby, railsã®versionãè¨è¼ãã¦ããã¨ã $ ruby -v # => 2.1.0-p0 $ rails -v # => 4.1.5 ãã®ç°å¢ã§åä½ã確èªãã¦ãã¾ãã gem annotate annotateã¯ãåschemaã®æ å ±ããã¡ã¤ã«ã®å é ãããã¯æ«å°¾ã«ã³ã¡ã³ããã¤ãã¦ãããgemã§ãã schemaãroutingãªã©ãç´æ¥ãã¡ã¤ã«
Full disclosure: I work for 10gen. What is a Data Model? Accessing data in a database depends on the data model implemented by that database. The data model affects the operations available and the API used by clients to operate on that data. Different data models may provide more or less raw functionality. Usually, the less functionality provided directly by the data model, the more the client ap
æ¬ç¨¿ã¯ããããããã«ã¢ãã«ã¨ããããçµå¶ã¢ãã«ããç°ãªãç£æ¥ã®ç°ãªã製åã«ã©ãã¾ã§é©ç¨å¯è½ããæ¤è¨ãããã®ã§ããããã®ããã«ãã¾ããã«ã¢ãã«ã®å å®¹ãæ´çãããã®å¾ã«ãã®æå¹æ§ãæ¯ãã¦ããæ¡ä»¶ã«ã¤ãã¦è«ãããã ãã«ã»ã³ã³ãã¥ã¼ã¿ã®æ´å² ãã«ã»ã³ã³ãã¥ã¼ã¿ç¤¾ï¼ä»¥ä¸ã§ã¯ãã«ç¤¾ã¨ç¥è¨ï¼ã®æ´å²ã¯ã1984å¹´ã«å§ã¾ãããã®å¹´ã®ï¼æããããµã¹å¤§å¦ã®ä¸äººã®å¦çï¼ãã¤ã±ã«ã»ãã«ï¼ã1,000ãã«ã®è²¯éãå æã«ããã¼ã·ã¼ãºã»ãªããããã¨ããååã®ã³ã³ãã¥ã¼ã¿ã®é信販売ä¼ç¤¾ãè¨ç«ããã®ãå§ã¾ãã§ããã1987å¹´ã«ä¼æ¥åããã«ã»ã³ã³ãã¥ã¼ã¿ã¨ããããã«ç¤¾ã®èºé²ã¶ãã¯ããã¾ããã1999å¹´ã®å ¨ä¸ç売ä¸é«ã§ã³ã³ããã¯ã¨ï¼®ï½ï¼ï¼ãäºãå°ä½ã確ä¿ãã¦ãããç´å©ççãç´ï¼ï¼ ï¼99å¹´ï¼ææï¼ã¨ããé«ãæ°´æºã«ãããç±³å½ãã«ã®å£²ä¸ã¯ã1992å¹´ã«ç´20åãã«ã ã£ããã®ãã99å¹´ï¼ææã«ã¯182åãã«ã¨ããããï¼å¹´éã§ï¼åã«æ¡å¤§
ç®æ¬¡ 1)ãã¸ã¹ãã£ãã¯å台忿¦èª¬ 2)ãã¸ã¹ãã£ãã¯å帰åæã¯ã©ããªæã«ä½¿ç¨ããã ï¼ï¼ãã¸ã¹ãã£ãã¯ã¢ãã«ã¨ã¯ 4)ãã¸ã¹ãã£ãã¯å帰åæã§å¾ãããã®ã¯ 5)ãªããºæ¯ã¨ã¯ 6)ãªããºæ¯ã®95%ä¿¡é ¼éçã¨ã¯ 7)ããã¼å¤æ°ã«ã¤ã㦠8)夿°é¸æä¸ã®æ³¨æç¹ 9)ãã¸ã¹ãã£ãã¯å帰åæãå¯è½ãªçµ±è¨ã½ãã 10)ãã¸ã¹ãã£ãã¯å帰åæã«é¢ããåèæ¸ 1)ï¾ï½¼ï¾ï½½ï¾ï½¨ï½¯ï½¸å台忿¦èª¬ è¿å¹´ã®å¤å½ã®è«æã«ãã¸ã¹ãã£ãã¯å帰åæãé常ã«å¢ãã¦ããããããçè§£ã§ããªãã¨è«æãèªããªããã¨ãå¤ãããã®ãã¨ã¯ãåå¤éè§£æã§ã¯ååãªè§£æãã§ããªããã¨ãå¤ããã¨ã示åãã¦ãããä»å¾æ¥æ¬ã®è«æã§ãããã¸ã¹ãã£ãã¯å帰åæã確å®ã«å¢å ãã¦ãããã®ã¨æãããããããããã¸ã¹ãã£ãã¯å帰åæãçè§£ãããã¨æã£ã¦ããããããæç§æ¸ã¯é常ã«å°ãªãããã¸ã¹ãã£ãã¯å帰åæã¯ãç«å¦èª¿æ»ãªã©ã®å¤§è¦æ¨¡ãªã¹ã¿ãã£ã«ã¯å¿ é ã§
ããããªèªç¶ãçµæ¸ã®ç¾è±¡ãè¡¨ãæ°å¼ãã°ã©ãã ä¸è¦§ã«ãªã£ããããªãµã¤ããè¦ããã§ãã ç§ã¯æ°å¦ããéãç¶ãã¦ãã社ä¼äººãªã®ã§ããã æè¿ã«ãªã£ã¦ãã¼ã±ãã£ã³ã°é¢é£ã®ä»äºã§ãã¢ãã«åãã®éè¦æ§ãç¥ã ã¡ããã¨åå¼·ãã¨ãã°ããã£ãã¨æã£ã¦ãã¾ãã ããæ½è±¡æ¦å¿µãé ã«ãªãã¾ãªãã®ã§ ãã®æ°å¼ããå ·ä½çã«ä½ã示ãã¦ãããããç¥ã£ã¦ã¤ã¡ã¼ã¸ãã ããããçè§£ãæ·±ãã¦ãããããªã¨ãã ãåç¥ã®æ¹ããæããã ãããï¼ã§ããã°æ°åã®ã©ã¤ç¤¾ä¼äººã¸ã®å¦æ¹ç®ãï¼
è¶ å¹¾ä½åå¸ï¼ã¡ããããã¶ãã·ãè±: hypergeometric distributionï¼ã¨ã¯ãæåç¶æ ããã¤æ¯éå£ããéå¾©å æ½åºããã¨ãã«æåç¶æ ãããã¤ãããã¨ãã確çãä¸ãã颿£ç¢ºçåå¸ã®ä¸ç¨®ã§ãããç·å¥³ã»åå¦ãªã©ã®ããã«2ç¨®ã®æä»ç屿§ã«åå²ã§ããæéæ¯éå£ããã®éå¾©å æ½åºã«é©ç¨ããããè¶ å¹¾ä½åå¸ã¨å¯¾ç §ç[注 1]ãªç¢ºçåå¸ã«ã¯äºé åå¸ãããã è¶ å¹¾ä½åå¸ã¨ã¯ K åã®æåç¶æ ãã㤠N åã®è¦ç´ ãããªãæ¯éå£ãã n åã®è¦ç´ ãéå¾©å æ½åºããã¨ãã« k åã®æåç¶æ ãå«ã¾ãã¦ãã確çãä¸ãã颿£ç¢ºçåå¸ã®ä¸ç¨®ã§ãããè¶ å¹¾ä½åå¸ã«å¾ã確ç夿° X ã®ç¢ºç質é颿° fX ã¯æ¬¡ã§ä¸ããããã 確ç質é颿°ã¯ max{0, n + K â N} ⤠k ⤠min{K, n} ã®ã¨ãæ£ã¨ãªãã è¶ å¹¾ä½åå¸ã¯ N ã大ãããªãã¨ãäºé åå¸ã«è¿ã¥ããã¾ã K/N ãå°ãããæ½åºæ° n ã大
ãªãªã¼ã¹ãé害æ å ±ãªã©ã®ãµã¼ãã¹ã®ãç¥ãã
ææ°ã®äººæ°ã¨ã³ããªã¼ã®é ä¿¡
å¦çãå®è¡ä¸ã§ã
j次ã®ããã¯ãã¼ã¯
kåã®ããã¯ãã¼ã¯
lãã¨ã§èªã
eã³ã¡ã³ãä¸è¦§ãéã
oãã¼ã¸ãéã
{{#tags}}- {{label}}
{{/tags}}