{"id":553,"date":"2019-11-20T16:47:58","date_gmt":"2019-11-20T08:47:58","guid":{"rendered":"http:\/\/www.mustenaka.cn\/?p=553"},"modified":"2019-11-20T17:07:52","modified_gmt":"2019-11-20T09:07:52","slug":"softwareengineeringlesson12","status":"publish","type":"post","link":"https:\/\/www.mustenaka.cn\/index.php\/2019\/11\/20\/softwareengineeringlesson12\/","title":{"rendered":"\u8f6f\u4ef6\u5de5\u7a0b\u8bfe\u5802\u7b14\u8bb012"},"content":{"rendered":"<h2>\u7a0b\u5e8f\u590d\u6742\u6027\u5ea6\u91cf<\/h2>\n<ul>\n<li>\u8bed\u53e5\u884c\u5ea6\u91cf\u65b9\u6cd5<\/li>\n<li>Halsted\u970d\u5c14\u7279\u65af\u5ea6\u91cf\u65b9\u6cd5<\/li>\n<li>\u73af\u8def\u5ea6\u91cf\u65b9\u6cd5<\/li>\n<\/ul>\n<h3>\u8bed\u53e5\u884c\u5ea6\u91cf\u65b9\u6cd5<\/h3>\n<blockquote><p>\u4f9d\u636e\u7a0b\u5e8f\u7684\u6570\u636e\u884c\u6570\u76ee\u4f5c\u4e3a\u4f30\u7b97\u5176\u590d\u6742\u6027\u7684\u5b9a\u91cf\u6307\u6807\u3002\u6570\u636e\u884c\u6570\u76ee\u8d8a\u591a\uff0c\u8d8a\u590d\u6742<\/p><\/blockquote>\n<h3>Halsted\u65b9\u6cd5<\/h3>\n<blockquote><p>Halsted\u65b9\u6cd5\u6839\u636e\u7a0b\u5e8f\u4e2d\u8fd0\u7b97\u7b26\u548c\u64cd\u4f5c\u6570\u7684\u603b\u6570\u6765\u5ea6\u91cf\u7a0b\u5e8f\u7684\u590d\u6742\u7a0b\u5ea6\u3002<\/p><\/blockquote>\n<p>\u53e6N1\u4e3a\u7a0b\u5e8f\u4e2d\u8fd0\u7b97\u7b26\u51fa\u73b0\u7684\u603b\u6b21\u6570\uff0cN2\u4e3a\u64cd\u4f5c\u6570\uff08\u53d8\u91cf\u548c\u5e38\u91cf\u7684\u51fa\u73b0\u7684\u6b21\u6570\uff09\u51fa\u73b0\u7684\u603b\u6b21\u6570\uff0c\u5b9e\u9645Halstead\u5c42\u5e8f\u957f\u5ea6H\u5b9a\u4e49\u4e3a\uff1a<strong>H=N1+N2 <\/strong>\u65e0\u6cd5\u4f7f\u7528\uff0c\u56e0\u4e3a\u8bbe\u8ba1\u9636\u6bb5\u4e0d\u77e5\u9053\u7a0b\u5e8f\u5177\u4f53\u5185\u5bb9<\/p>\n<p>\u4e0d\u540c\u8fd0\u7b97\u7b26\uff08\u5305\u62ec\u5173\u952e\u5b57\uff09\u7684\u4e2a\u6570n1\uff0c\u4e0d\u540c\u64cd\u4f5c\u6570\uff08\u53d8\u91cf\u548c\u5e38\u6570\uff09\u7684\u4e2a\u6570n2\u3002<\/p>\n<p><strong>\u9884\u6d4b<\/strong>Halstead\u7a0b\u5e8f\u957f\u5ea6\u7684\u516c\u5f0f\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>N=n1 log2 n1 + n2 log 2 n2<\/li>\n<\/ul>\n<p><strong>\u9884\u6d4b<\/strong>\u7a0b\u5e8f\u4e2d\u5305\u542b\u9519\u8bef\u7684\u4e2a\u6570\u7684\u516c\u5f0f\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>E= N log2 (n1+n2)\/3000<\/li>\n<\/ul>\n<blockquote><p>\u4f8b\u9898\uff1a\u4e00\u4e2a\u7a0b\u5e8f\u5bf975\u4e2a\u6570\u636e\u5e93\u5171\u8bbf\u95ee1300\u6b21\uff0c\u5bf9150\u4e2a\u8fd0\u7b97\u7b26\u5171\u4f7f\u75281200\u6b21\uff0c\u90a3\u4e48\u9884\u6d4b\u6539\u7a0b\u5e8f\u7684\u9519\u8bef\u6570\uff1a<\/p>\n<p>H=N1+N2\u00a0 \u00a0 \u00a0 \u00a0 \u00a0H=1300+1200=2500<\/p>\n<p>N=n1 log2 n1 +n2 log2 n2\u00a0 \u00a0 \u00a0 N=75log2(75)+150log2(150)=2551.75<\/p>\n<p>E=N log2 (n1+n2)\/3000\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 E=N log2(75+150)\/3000=6.5<\/p>\n<p>\u56e0\u6b64\u53ef\u80fd\u51fa\u73b06~7\u4e2a\u9519\u8bef<\/p><\/blockquote>\n<h3>McCabe\u65b9\u6cd5\u3010\u91cd\u70b9\uff01\u3011<\/h3>\n<blockquote><p>McCabe\u65b9\u6cd5\u6839\u636e\u7a0b\u5e8f\u63a7\u5236\u6d41\u7684\u590d\u6742\u7a0b\u5ea6\u5b9a\u91cf\u5ea6\u91cf\u7a0b\u5e8f\u590d\u6742\u7a0b\u5ea6\uff0c\u8fd9\u6837\u5ea6\u91cf\u51fa\u7684\u7ed3\u679c\u79f0\u4e3a<strong>\u7a0b\u5e8f\u7684\u73af\u5f62\u590d\u6742\u5ea6<\/strong>\u3002<\/p><\/blockquote>\n<p>\u8fd9\u79cd\u65b9\u6cd5\u9700\u8981\u753b\u51fa<strong>\u7a0b\u5e8f\u56fe<\/strong>\uff0c\u7136\u540e\u8ba1\u7b97\u7a0b\u5e8f\u56fe\u4e2d\u7684\u73af\u8def\u4e2a\u6570\u3010\u9700\u8981\u628a\uff08\u7a0b\u5e8f\u6d41\u7a0b\u56fe\uff09\u4fee\u6539\u4e3a\uff08\u7a0b\u5e8f\u56fe\uff09\u3011\uff0c\u7a0b\u5e8f\u56fe\u4ec5\u63cf\u7ed8\u7a0b\u5e8f\u7684\u63a7\u5236\u6d41\u7a0b\uff0c\u5b8c\u5168\u4e0d\u8868\u73b0\u5bf9\u6570\u636e\u7684\u5177\u4f53\u64cd\u4f5c\u4ee5\u53ca\u5206\u652f\u6216\u5faa\u73af\u7684\u5177\u4f53\u6761\u4ef6\u3002<\/p>\n<p>\u5982\u56fe\uff1a\u26aa&#8212;-&gt;\u26aa&#8212;-&gt;\u26aa\u00a0 \uff08\u8868\u793a\u987a\u5e8f\u7ed3\u6784\uff09<\/p>\n<p>\u73af\u8def\u590d\u6742\u5ea6\u3010V(G)\u3011\u8ba1\u7b97\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li>\u65b9\u6cd5\u4e00\uff1a\u533a\u57df\u6570\uff1aV(G)=\u6d41\u56fe\u4e2d\u7684\u533a\u57df\u6570\uff08\u5305\u62ec\u56fe\u5916\u7684\u533a\u57df\uff09<\/li>\n<li>\u65b9\u6cd5\u4e8c\uff1a\u5224\u5b9a\u6570\uff1aV(G)=\u5224\u5b9a\u7684\u8282\u70b9\u6570+1\uff08\u5224\u5b9a\u8282\u70b9\uff0c\u5206\u652f\u8bed\u53e5\u5904\uff09<\/li>\n<li>\u65b9\u6cd5\u4e09\uff1a\u516c\u5f0f\u6cd5\uff1aV(G)=\u8fb9\u6570-\u70b9\u6570+2\u3010V(G)=m-n+2p\u3011<\/li>\n<\/ul>\n<blockquote><p>\u5b9e\u8df5\u8bc1\u660e\uff1a\u6a21\u5757\u89c4\u6a21\u4ee5<strong>V(G)&lt;=10<\/strong>\u4e3a\u5b9c\uff0c\u73af\u5f62\u590d\u6742\u5ea6\u8d8a\u9ad8\u5f80\u5f80\u5bb9\u6613\u51fa\u95ee\u9898\u3002<\/p><\/blockquote>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7a0b\u5e8f\u590d\u6742\u6027\u5ea6\u91cf \u8bed\u53e5\u884c\u5ea6\u91cf\u65b9\u6cd5 Halsted\u970d\u5c14\u7279\u65af\u5ea6\u91cf\u65b9\u6cd5 \u73af\u8def\u5ea6\u91cf\u65b9\u6cd5 \u8bed\u53e5\u884c\u5ea6\u91cf\u65b9\u6cd5 \u4f9d\u636e\u7a0b [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[53],"tags":[55],"class_list":["post-553","post","type-post","status-publish","format-standard","hentry","category-softwareengineering","tag-se"],"views":1206,"_links":{"self":[{"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/posts\/553","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/comments?post=553"}],"version-history":[{"count":3,"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/posts\/553\/revisions"}],"predecessor-version":[{"id":557,"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/posts\/553\/revisions\/557"}],"wp:attachment":[{"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/media?parent=553"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/categories?post=553"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/tags?post=553"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}