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PageRank（PR值）

威海链接原理威海PR
1201

PageRank是沉迷Google的人们用来测验其站点在Google中的排名的一种衡量规范，SEO和查找引擎营销（SEM）专家也运用这个术语描绘网页在SERP中的排名以及Google依据排名算法给予站点的分数，无论怎么界说，PageRank都是SEO的重要部分。

Public @ 2010-02-23 15:39:10

PageRank与TrustRank影响因素分析

PageRank（PR）里的page不是指网页，而是指Google创始人拉里?佩奇（Larry Page），是他在2001年申请的专利中以自己名字命名的，Google的PageRank根据网站的外部链接和内部链接的数量和质量来衡量网站的价值。TrustRank（信任指数）是2006年雅虎申请的一项专利，Trust Rank是用来检测垃圾网站的，但现在的搜索引擎排名算法中，常常影响大部分网站的整体排

Public @ 2015-02-25 15:39:09

Google PR劫持

威海链接原理威海PR
1421

Google PR劫持是指恶意攻击者修改网站的PageRank值，以使其在Google搜索结果中获得更高的排名。攻击者可以通过篡改网站内容、利用漏洞或使用黑帽SEO技术等方式来实现PR劫持。这种攻击可能会导致合法网站的访客数量锐减，进而影响其商业利益。为了避免PR劫持，网站管理员应当做好网站安全防护工作，及时更新网站补丁和加强网站访问控制等措施。

Public @ 2023-06-19 00:00:07

了解什么是PR

威海链接原理威海PR
1857

PR是Google排名算法的200多个因素之一，而且重要性已经下降很多。当然，PR还是Google排名算法中的重要因素之一。除了直接影响排名，PR的重要性还体现以下几点。（1）网站收录深度和总页面数。搜索引擎蜘蛛爬行时间及数据库的空间都是有限的。对大中型网站来说，首页PR值是带动网站收录的重要因素之一。（2）更新频率。PR值越高的网站，搜索引擎蜘蛛访问得就越频繁，网站上出现新页面或旧页面上内容更新

Public @ 2020-03-21 15:39:10

PageRank（PR值）

威海链接原理威海PR
1202

PageRank是沉迷Google的人们用来测验其站点在Google中的排名的一种衡量规范，SEO和查找引擎营销（SEM）专家也运用这个术语描绘网页在SERP中的排名以及Google依据排名算法给予站点的分数，无论怎么界说，PageRank都是SEO的重要部分。

Public @ 2010-02-23 15:39:10

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[ DB ] CONNECT:[ UseTime:0.022862s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.016502s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 1566 LIMIT 1 [ RunTime:0.015454s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '4', 'ref' => 'const', 'rows' => 1, 'extra' => NULL, ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='cate' order by times desc limit 15 [ RunTime:0.015790s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by times desc limit 100 [ RunTime:0.015837s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by rand() limit 30 [ RunTime:0.016797s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 1566 LIMIT 1 [ RunTime:0.015423s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '4', 'ref' => 'const', 'rows' => 1, 'extra' => NULL, ) ]
[ SQL ] update `ob_article` set views=views+1 where id=1566 [ RunTime:0.016277s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海链接原理' AND `status` <> -1 LIMIT 1 [ RunTime:0.025014s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海链接原理' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.039980s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海PR' AND `status` <> -1 LIMIT 1 [ RunTime:0.024556s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海PR' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.032120s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where; Using temporary; Using filesort', ) ]

0.434082s

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