{"id":9223,"date":"2010-09-11T18:19:00","date_gmt":"2010-09-11T18:19:00","guid":{"rendered":"http:\/\/melotopia.net\/b\/?p=9223"},"modified":"2010-09-11T18:19:00","modified_gmt":"2010-09-11T18:19:00","slug":"%ec%97%94%ed%8a%b8%eb%a1%9c%ed%94%bc%ec%9d%98-%ec%9d%b4%ed%95%b4-2","status":"publish","type":"post","link":"http:\/\/melotopia.net\/b\/?p=9223","title":{"rendered":"\uc5d4\ud2b8\ub85c\ud53c\uc758 \uc774\ud574 2"},"content":{"rendered":"<div class=\"desc\">\n        \ub85c\ub610\uac00 \uc0dd\uac01\uc774 \ub0ac\ub2e4.<\/p>\n<p>        \uc5d4\ud2b8\ub85c\ud53c\ub294 \ub2e4\uc74c\uacfc \uac19\uc774 \uc815\uc758\ub41c\ub2e4<\/p>\n<p>        -\uc5d4\ud2b8\ub85c\ud53c = $\\sum$\ud655\ub960(x) log(\ud655\ub960(x))<\/p>\n<p>        -\uae30\ud638\ub3c4 \ubd99\uc5b4\uc788\uace0 \ubcfc\uce20\ub9cc \uc0c1\uc218\ub3c4 \uc6d0\ub798\ub294 \uc788\uc9c0\ub9cc \uc0c1\uc218 \uc815\ub3c4\ub294 \ub300\ucda9 \ub118\uc5b4\uac00\uc790.<br \/>\n        <br \/>\n        \uc5ec\uae30\uc11c, \ub85c\uadf8\uac00 \ube60\uc9c0\uba74 \uadf8\ub0e5 \ud655\ub960\uc758 \ub367\uc148\uc774\ubbc0\ub85c 1\uc774 \ub41c\ub2e4. \ub85c\uadf8\uac00 \uc65c \ubd99\uc5b4\uc788\ub294\uac00\ub294 \uc880 \ub098\uc911\uc5d0 \uc0dd\uac01\uc744 \ud574 \ubcf4\uace0, \uc5d4\ud2b8\ub85c\ud53c\uac00 \uc704\uc640 \uac19\uc774 \uc815\uc758\ub41c\ub2e4 \uce58\uace0 \ub85c\ub610 \ubcf5\uad8c\uc758 \uc5d4\ud2b8\ub85c\ud53c\ub97c \uc0dd\uac01\ud574 \ubcf4\uc790.<\/p>\n<p>        &#8230;<br \/>\n        <br \/>\n        \uadfc\ub370, \uc5b4\ub824\uc6b0\ub2c8\uae4c \ub85c\ub610 \ub300\uc2e0, \uc77c\ub2e8 \ub3d9\uc804 \ub358\uc9c0\uae30\uc758 \uc5d4\ud2b8\ub85c\ud53c\ub97c \uc0dd\uac01\ud574 \ubcf4\uc790.<br \/>\n        <br \/>\n        \ud655\ub960(\uc55e) = 0.5<br \/>\n        <br \/>\n        \ud655\ub960(\ub4a4) = 0.5<br \/>\n        <br \/>\n        -\uc5d4\ud2b8\ub85c\ud53c = 0.5(log(0.5))+0.5(log(0.5)) = log(0.5)<br \/>\n        <br \/>\n        \ub530\ub77c\uc11c \uc5d4\ud2b8\ub85c\ud53c = log2<\/p>\n<p>        \ucc38 \uc27d\uc8e0?<\/p>\n<p>        \ub9cc\uc57d log\uc758 \ubc11\uc774 2\ub77c\uba74 \uc5d4\ud2b8\ub85c\ud53c = 1<br \/>\n        <br \/>\n        (\ubcfc\uce20\ub9cc \uc0c1\uc218\uc758 \uc5ed\ud560\uc774 \ubc14\ub85c \uc774\uac83\uc774\ub2e4. \ud1b5\uacc4\uc801 \ud604\uc0c1\uacfc \uc2e4\uc81c \uc790\uc5f0 \ud604\uc0c1 \uc0ac\uc774\uc758 \uc5b4\ub5a4 \uad00\uacc4\uac00 \uc131\ub9bd\ud560 \ub54c, \uadf8 \uad00\uacc4\ub97c \uc218\uce58\uc801\uc73c\ub85c \uc798 \ub9de\ub3c4\ub85d \ud574 \uc8fc\ub294 \uc5ed\ud560, \uc989 \ub85c\uadf8\uc758 \ubc11 \uac19\uc740 ?\u6cbd?\ud574\ub2f9\ud55c\ub2e4.)<\/p>\n<p>        \uc774\ubc88\uc5d4 \uc8fc\uc0ac\uc704 \ub358\uc9c0\uae30\uc758 \uc5d4\ud2b8\ub85c\ud53c\ub97c \uc0dd\uac01\ud574 \ubcf4\uc790.<br \/>\n        <br \/>\n        \ud655\ub960(n) = 1\/6 for any integer n between 1 and 6.<br \/>\n        <br \/>\n        -\uc5d4\ud2b8\ub85c\ud53c = 1\/6(log(1\/6)) + 1\/6(log(1\/6)) + 1\/6(log(1\/6)) + 1\/6(log(1\/6)) + 1\/6(log(1\/6)) + 1\/6(log(1\/6)) = log(1\/6)<br \/>\n        <br \/>\n        \ub530\ub77c\uc11c \uc5d4\ud2b8\ub85c\ud53c = log 6<br \/>\n        <br \/>\n        \uc774\uac83\ub3c4 \ub9cc\uc57d log\uc758 \ubc11\uc774 6\uc774\ub77c\uba74 \uc5d4\ud2b8\ub85c\ud53c = 1<\/p>\n<p>        \ubaa8\ub450 \ub2e4 \uac19\uc740 \ud655\ub960\uc744 \uac00\uc9c0\ub294 \uacbd\uc6b0\uc5d0\ub294, \uc774\ucc98\ub7fc \uc5d4\ud2b8\ub85c\ud53c\uac00 \ub2e8\uc21c\ud558\uac8c \uacc4\uc0b0\ub41c\ub2e4.<\/p>\n<p>        \uc774\uc81c, \uc2e4\uc804\uc5d0 \ub4e4\uc5b4\uac00 \ubcf4\uc790. \ub85c\ub610 \ub2f9\ucca8\uc758 \uac01 \ub4f1\uc218\ubcc4 \ud655\ub960\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<br \/>\n        <br \/>\n        \ud655\ub960(1\ub4f1) = 1\/8145060<br \/>\n        <br \/>\n        \ud655\ub960(2\ub4f1) = 1\/1357510<br \/>\n        <br \/>\n        \ud655\ub960(3\ub4f1) = 1\/35724<br \/>\n        <br \/>\n        \ud655\ub960(4\ub4f1) = 1\/733<br \/>\n        <br \/>\n        \ud655\ub960(5\ub4f1) = 1\/45<br \/>\n        <br \/>\n        \ub0b4\uac00 \uc9c1\uc811 \uacc4\uc0b0\ud55c \uac12\uc740 \uc544\ub2c8\ub77c\uc11c \uc774\uac8c \uc9c4\uc9dc \uadf8\ub807\uac8c \ub418\ub294\uc9c0\ub294 \ubaa8\ub974\uaca0\uc9c0\ub9cc, \uac80\uc99d\ud558\uae30\ub294 \uadc0\ucc2e\uc73c\ubbc0\ub85c \uc77c\ub2e8 \ubbff\uace0 \ub118\uc5b4\uac00\uc790. \uc77c\ub2e8 \uc774 \uac12\uc744 \ub2e4 \ub354\ud558\uba74 0.0236153305 \uc774\ub2e4. \ub300\ub7b5 2.4%\ub9cc \ub2f9\ucca8\ub41c\ub2e4\ub294 \ub73b\uc774\ub2e4. -_-; (5\ub4f1\uc870\ucc28\ub3c4.)<br \/>\n        <br \/>\n        \ubb3c\ub860, \ub2f9\uc5f0\ud788 \ub2e4\uc74c\uacfc \uac19\ub2e4.<br \/>\n        <br \/>\n        \ud655\ub960(\uaf5d) = 1 &#8211; \ud655\ub960(\ub2f9\ucca8)<\/p>\n<p>        &#8211; \uc5d4\ud2b8\ub85c\ud53c =  1\/8145060 log(1\/8145060) + 1\/1357510 log(1\/1357510) + 1\/35724 log(1\/35724) + 1\/733 log(1\/733) + 1\/45 log(1\/45) + (1-\ud655\ub960(\ub2f9\ucca8)) log(1-\ud655\ub960(\ub2f9\ucca8)) = -0.117232782169297292634886427813927570789488305228976152956<br \/>\n        <\/p>\n<pre>\uc774 \uacc4\uc0b0\uc740 \uad6c\uae00\uc5d0\uc11c \uac80\uc0c9\ud560 \uc218 \uc5c6\uc5b4\uc11c \uc815\ub2f5 \uac80\uc0c9\uc73c\ub85c \uc720\uba85\ud55c <a href=\"http:\/\/www.wolframalpha.com\/\" target=\"_blank\" title=\"[http:\/\/www.wolframalpha.com\/]\ub85c \uc774\ub3d9\ud569\ub2c8\ub2e4.\">\uc6b8\ud504\ub7a8 \uc54c\ud30c<\/a>\ub97c \uc368 \ubd24\ub2e4.<br\/>\r\n<br\/>\r\n\uc5d4\ud2b8\ub85c\ud53c = 0.118<br\/>\r\n<br\/>\r\n\uc774\uac8c \ubb34\uc2a8 \uc758\ubbf8\uc778\uac00...<br\/>\r\n\uc704\uc5d0\uc11c \ub3d9\uc804 \ub358\uc9c0\uae30\uc758 \uc5d4\ud2b8\ub85c\ud53c\ub97c \uc2e4\uc81c\ub85c \uacc4\uc0b0\ud558\uba74 log(2) = 0.69\uc815\ub3c4 \ub418\uace0, <br\/>\r\n\uc8fc\uc0ac\uc704 \ub358\uc9c0\uae30\uc758 \uc5d4\ud2b8\ub85c\ud53c\ub97c \uacc4\uc0b0\ud558\uba74 log(6) = 1.79\uc815\ub3c4 \ub41c\ub2e4. <br\/>\r\n\ub85c\ub610 \ubcf5\uad8c\uc758 \uc5d4\ud2b8\ub85c\ud53c\ub294 \uc774\ub7f0 \uac83\ub4e4\ubcf4\ub2e4 \ud6e8\uc52c \ub0ae\uc740 \ud3b8\uc774\ub2e4.<br\/>\r\n<br\/>\r\n\uc774\uc81c \uc774\uac78 \uc2e4\uc81c \ud655\ub960 \uacfc\uc815\uc5d0\uc11c \ud55c\ubc88 \uc0b4\ud3b4\ubcf4\uc790.<br\/>\r\n\ub9cc\uc57d \ub3d9\uc804\uc744 1000\ubc88 \ub358\uc838\uc11c 300\ubc88\uc774 \uc55e, 700\ubc88\uc774 \ub4a4\uac00 \ub098\uc654\ub2e4\uace0 \ud558\uc790. \uc774 \uacbd\uc6b0\uc758 \uc5d4\ud2b8\ub85c\ud53c\ub294<br\/>\r\n- \uc5d4\ud2b8\ub85c\ud53c = 0.3 log(0.3) + 0.7 log(0.7) =  -0.610864<br\/>\r\n\uc5d4\ud2b8\ub85c\ud53c = 0.61\uc774\ub2e4. \uc989, \ub3d9\uc804\ub358\uc9c0\uae30\uc5d0\uc11c \uac01\uac01 500\ubc88\uc529 \ub098\uc624\ub294 \uacbd\uc6b0\ubcf4\ub2e4 \uc5d4\ud2b8\ub85c\ud53c\uac00 \uc791\ub2e4.<br\/>\r\n\uc2e4\uc81c \ub85c\ub610 \ubcf5\uad8c\uc758 \ub2f9\ucca8 \ud655\ub960\uc744 \uc774\uc6a9\ud558\uc5ec \uc5d4\ud2b8\ub85c\ud53c\ub97c \uacc4\uc0b0\ud558\uba74, <br\/>\r\n\uc544\ub9c8 \uc704\uc5d0\uc11c \uacc4\uc0b0\ud55c \ub85c\ub610 \ubcf5\uad8c\uc758 \uc774\uc0c1\uc801\uc778 \uacbd\uc6b0\uc5d0 \ub300\ud55c \u009e\u0082\u3134\ud2b8\ub85c\ud53c\ubcf4\ub2e4 \ub354 \uc791\uac8c \ub098\uc62c \uac83\uc774\ub2e4.<br\/>\r\n\uc2e4\uc81c\ub85c \uacc4\uc0b0\ud574 \ubcf4\uace0 \uc2f6\uae34 \ud55c\ub370 \ucd1d \uba87\uac1c\uac00 \ud314\ub838\ub294\uc9c0\uc5d0 \ub300\ud55c \uc790\ub8cc\ub97c \uc54c\uae30\uac00 \uc5b4\ub835\ub2e4. \ud68c\ucc28\ubcc4 \uc790\ub8cc\ub294 \uc788\ub294\ub370, <br\/>\r\n\uc774\uac78 \ub2e4 \ub354\ud558\ub824\ub2c8 \ub9c9\ub9c9\ud558\ub2e4. -_-;<br\/>\r\n<br\/>\r\n<br\/>\r\n<\/pre>\n<div style=\"width:100%;margin-top:30px;clear:both;height:30px\">\n<div style=\"width:31px;float:left;\">\n<a href=\"\/toolbar\/popup\/abuseReport\/?entryId=2052\" onclick=\"window.open(this.href, 'tistoryThisBlogPopup', 'width=550, height=510, toolbar=no, menubar=no, status=no, scrollbars=no'); return false;\"><br \/>\n<img data-recalc-dims=\"1\" decoding=\"async\" alt=\"\uc2e0\uace0\" src=\"https:\/\/i0.wp.com\/t1.daumcdn.net\/tistory_admin\/static\/ico\/ico_spam_report.png\" style=\"border:0\"\/><br \/>\n<\/a>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\ub85c\ub610\uac00 \uc0dd\uac01\uc774 \ub0ac\ub2e4. \uc5d4\ud2b8\ub85c\ud53c\ub294 \ub2e4\uc74c\uacfc \uac19\uc774 \uc815\uc758\ub41c\ub2e4 -\uc5d4\ud2b8\ub85c\ud53c = $\\sum$\ud655\ub960(x) log(\ud655\ub960(x)) -\uae30\ud638\ub3c4 \ubd99\uc5b4\uc788\uace0 \ubcfc\uce20\ub9cc \uc0c1\uc218\ub3c4 \uc6d0\ub798\ub294 \uc788\uc9c0\ub9cc \uc0c1\uc218 \uc815\ub3c4\ub294 \ub300\ucda9 \ub118\uc5b4\uac00\uc790. \uc5ec\uae30\uc11c, \ub85c\uadf8\uac00 \ube60\uc9c0\uba74 \uadf8\ub0e5 \ud655\ub960\uc758 \ub367\uc148\uc774\ubbc0\ub85c 1\uc774 \ub41c\ub2e4. \ub85c\uadf8\uac00 \uc65c \ubd99\uc5b4\uc788\ub294\uac00\ub294 \uc880 \ub098\uc911\uc5d0 \uc0dd\uac01\uc744 \ud574 \ubcf4\uace0, \uc5d4\ud2b8\ub85c\ud53c\uac00 \uc704\uc640 \uac19\uc774 \uc815\uc758\ub41c\ub2e4 \uce58\uace0 \ub85c\ub610 \ubcf5\uad8c\uc758 \uc5d4\ud2b8\ub85c\ud53c\ub97c \uc0dd\uac01\ud574 \ubcf4\uc790. &#8230; \uadfc\ub370, \uc5b4\ub824\uc6b0\ub2c8\uae4c \ub85c\ub610 \ub300\uc2e0, \uc77c\ub2e8 \ub3d9\uc804 \ub358\uc9c0\uae30\uc758 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[2],"tags":[],"class_list":["post-9223","post","type-post","status-publish","format-standard","hentry","category-academic"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p8o6gA-2oL","jetpack-related-posts":[],"jetpack_likes_enabled":true,"_links":{"self":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts\/9223","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9223"}],"version-history":[{"count":0,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts\/9223\/revisions"}],"wp:attachment":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9223"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9223"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9223"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}