有声读物,完美的世界 1993 电影,遮天辰东小说笔趣阁

Google PR值（PageRank）是Google用于評估網(wǎng)頁重要性和引用關(guān)系的一種算法方法。PR值介于0到10之間，值越高表示網(wǎng)頁的重要性越高。 PR值的計(jì)算基于網(wǎng)頁的鏈接數(shù)和鏈接質(zhì)量，即鏈接來源的重要性。一個網(wǎng)頁被其他重要網(wǎng)頁所連接時(shí)，它的PR值也會隨之提高。具體地，PR值的計(jì)算公式為： PR(A) = (1-d) + d(PR(t1)/C(t1) + ... + PR(tn)/C(tn)) 其中： - PR(A)是網(wǎng)頁A的PR值； - PR(ti)是指向網(wǎng)頁A的鏈接網(wǎng)頁的PR值； - C(ti)是指向網(wǎng)頁A的鏈接網(wǎng)頁的出鏈數(shù)； - d是一個0到1之間的常數(shù)，稱為阻尼因子，一般取值為0.85。計(jì)算PR值需要遍歷整個網(wǎng)頁圖，求解矩陣方程。因此，通常采用近似迭代算法來計(jì)算。

Public @ 2023-05-27 10:00:11

Google PR劫持

威海鏈接原理威海PR
2718

Google PR劫持是一種黑客攻擊方式，指的是攻擊者通過某種手段修改了網(wǎng)站頁面的PageRank值，以提高自己的站點(diǎn)排名或降低競爭對手的排名。具體來說，攻擊者會通過篡改網(wǎng)站鏈接或利用重定向等方式，將莫名其妙的外鏈指向目標(biāo)網(wǎng)站，從而提高目標(biāo)網(wǎng)站的PR值。這種攻擊對于網(wǎng)站所有者來說是極為危險(xiǎn)的，因?yàn)樗赡軐?dǎo)致網(wǎng)站在搜索引擎結(jié)果中的排名受到影響，嚴(yán)重的甚至?xí)凰阉饕鎽土P或封禁。為了避免這種情況發(fā)生，

Public @ 2023-06-27 00:50:12

HITS算法

威海鏈接原理威海HITS算法
3117

HITS算法（Hypertext-Induced Topic Selection），也稱為Hubs and Authorities algorithm，是一種用來計(jì)算圖中節(jié)點(diǎn)相對重要性的算法。它是Larry Page and Sergey Brin 在1998年首次提出，以提高他們搜索引擎Google的網(wǎng)頁檢索準(zhǔn)確性。HITS算法通過分析不同節(jié)點(diǎn)間的連接關(guān)系來鑒定節(jié)點(diǎn)的重要性分?jǐn)?shù)：一個節(jié)點(diǎn)

Public @ 2023-02-27 07:00:50

Google PR劫持

威海鏈接原理威海PR
2718

Public @ 2023-06-27 00:50:12

Matt Cutts談PR和PR更新

威海鏈接原理威海PR
2356

大家都注意到前兩天Toolbar(工具條)PR已經(jīng)更新了。Matt Cutts發(fā)了一個帖子，回答一些關(guān)于PR和PR更新的問題。問：我很好奇PR值在內(nèi)部是怎樣存儲的？是小數(shù)，就像人們猜測的，還是整數(shù)？答：把它想為小數(shù)更準(zhǔn)確。當(dāng)然目前我們內(nèi)部的PR計(jì)算比toolbar顯示的0－10要長的多。問：我需要知道這個嗎？我知道PR能告訴我什么，我為什么要在乎？也就是說對普通網(wǎng)站來說，PR有什么目的？答：我想這

Public @ 2012-12-27 15:39:04

更多您感興趣的搜索

基本文件流程錯誤 SQL 調(diào)試

/www/wwwroot/briline.net/public/index.php ( 0.79 KB )
/www/wwwroot/briline.net/public/public.php ( 1.08 KB )
/www/wwwroot/briline.net/thinkphp/start.php ( 0.73 KB )
/www/wwwroot/briline.net/thinkphp/base.php ( 2.66 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Loader.php ( 19.47 KB )
/www/wwwroot/briline.net/vendor/composer/autoload_namespaces.php ( 0.21 KB )
/www/wwwroot/briline.net/vendor/composer/autoload_psr4.php ( 0.84 KB )
/www/wwwroot/briline.net/vendor/composer/autoload_classmap.php ( 0.14 KB )
/www/wwwroot/briline.net/vendor/composer/autoload_files.php ( 0.42 KB )
/www/wwwroot/briline.net/vendor/qiniu/php-sdk/src/Qiniu/functions.php ( 7.10 KB )
/www/wwwroot/briline.net/vendor/qiniu/php-sdk/src/Qiniu/Config.php ( 0.70 KB )
/www/wwwroot/briline.net/vendor/topthink/think-captcha/src/helper.php ( 1.59 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Route.php ( 59.82 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Config.php ( 6.03 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Validate.php ( 40.27 KB )
/www/wwwroot/briline.net/vendor/topthink/think-queue/src/config.php ( 0.77 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Console.php ( 21.22 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Error.php ( 3.59 KB )
/www/wwwroot/briline.net/thinkphp/convention.php ( 10.31 KB )
/www/wwwroot/briline.net/thinkphp/library/think/App.php ( 21.04 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Request.php ( 50.94 KB )
/www/wwwroot/briline.net/app/config.php ( 11.25 KB )
/www/wwwroot/briline.net/app/database.php ( 1.41 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Hook.php ( 4.76 KB )
/www/wwwroot/briline.net/app/tags.php ( 1.16 KB )
/www/wwwroot/briline.net/app/common/behavior/InitBase.php ( 8.17 KB )
/www/wwwroot/briline.net/app/common.php ( 23.29 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Env.php ( 1.25 KB )
/www/wwwroot/briline.net/thinkphp/helper.php ( 17.86 KB )
/www/wwwroot/briline.net/app/function.php ( 0.78 KB )
/www/wwwroot/briline.net/app/extend.php ( 13.29 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Debug.php ( 7.06 KB )
/www/wwwroot/briline.net/app/common/model/Config.php ( 0.78 KB )
/www/wwwroot/briline.net/app/common/model/ModelBase.php ( 12.18 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Model.php ( 66.83 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Db.php ( 6.54 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Log.php ( 5.84 KB )
/www/wwwroot/briline.net/thinkphp/library/think/db/connector/Mysql.php ( 3.94 KB )
/www/wwwroot/briline.net/thinkphp/library/think/db/Connection.php ( 29.97 KB )
/www/wwwroot/briline.net/thinkphp/library/think/db/Query.php ( 86.80 KB )
/www/wwwroot/briline.net/thinkphp/library/think/db/builder/Mysql.php ( 2.16 KB )
/www/wwwroot/briline.net/thinkphp/library/think/db/Builder.php ( 30.47 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Cache.php ( 6.17 KB )
/www/wwwroot/briline.net/thinkphp/library/think/cache/driver/File.php ( 7.46 KB )
/www/wwwroot/briline.net/thinkphp/library/think/cache/Driver.php ( 5.52 KB )
/www/wwwroot/briline.net/app/common/behavior/InitHook.php ( 1.25 KB )
/www/wwwroot/briline.net/app/common/model/Hook.php ( 0.77 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Lang.php ( 6.95 KB )
/www/wwwroot/briline.net/thinkphp/lang/zh-cn.php ( 3.85 KB )
/www/wwwroot/briline.net/app/route.php ( 0.91 KB )
/www/wwwroot/briline.net/app/index/config.php ( 0.96 KB )
/www/wwwroot/briline.net/app/index/common.php ( 0.68 KB )
/www/wwwroot/briline.net/app/index/controller/Wiki.php ( 2.44 KB )
/www/wwwroot/briline.net/app/index/controller/IndexBase.php ( 1.10 KB )
/www/wwwroot/briline.net/app/common/controller/ControllerBase.php ( 4.75 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Controller.php ( 6.20 KB )
/www/wwwroot/briline.net/thinkphp/library/traits/controller/Jump.php ( 4.97 KB )
/www/wwwroot/briline.net/thinkphp/library/think/View.php ( 6.86 KB )
/www/wwwroot/briline.net/thinkphp/library/think/view/driver/Think.php ( 5.61 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Template.php ( 46.46 KB )
/www/wwwroot/briline.net/thinkphp/library/think/template/driver/File.php ( 2.24 KB )
/www/wwwroot/briline.net/app/index/logic/Wiki.php ( 6.16 KB )
/www/wwwroot/briline.net/app/index/logic/IndexBase.php ( 0.79 KB )
/www/wwwroot/briline.net/app/common/logic/LogicBase.php ( 0.83 KB )
/www/wwwroot/briline.net/app/common/model/Article.php ( 0.78 KB )
/www/wwwroot/briline.net/app/common/model/ArticleTongji.php ( 0.79 KB )
/www/wwwroot/briline.net/thinkphp/library/think/paginator/driver/Bootstrap.php ( 5.90 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Paginator.php ( 9.45 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Collection.php ( 8.63 KB )
/www/wwwroot/briline.net/runtime/temp/ead4923c25a6b3f986358f7070f93dfa.php ( 56.51 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Response.php ( 8.64 KB )
/www/wwwroot/briline.net/thinkphp/library/think/debug/Html.php ( 4.27 KB )

[ DB ] CONNECT:[ UseTime:0.022218s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_config` [ RunTime:0.015950s ]
[ SQL ] SELECT * FROM `ob_config` [ RunTime:0.015065s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_config', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 25, 'extra' => NULL, ) ]
[ SQL ] SHOW COLUMNS FROM `ob_hook` [ RunTime:0.018454s ]
[ SQL ] SELECT `id`,`name`,`addon_list` FROM `ob_hook` [ RunTime:0.014823s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_hook', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 3, 'extra' => NULL, ) ]
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.015994s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 8040 LIMIT 1 [ RunTime:0.015125s ]
[ 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:0.015269s ]
[ 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:0.015795s ]
[ 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:0.016207s ]
[ 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` = 8040 LIMIT 1 [ RunTime:0.014926s ]
[ 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+2 where id=8040 [ RunTime:0.017871s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海鏈接原理' AND `status` <> -1 LIMIT 1 [ RunTime:0.022141s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9562, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海鏈接原理' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.032255s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9562, '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:0.026161s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9562, '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:0.030609s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9562, 'extra' => 'Using where; Using temporary; Using filesort', ) ]

0.504602s

国产成人精品999视频&日本一区二区亚洲人妻精品&久久久精品国产99久久精&99热这里只有成人精品国产&精品国产剧情av一区二区&成人亚洲精品久久久久app&国产精品美女高潮抽搐A片

Categories

Tags

Google PR 值是什么？怎樣計(jì)算？

Google PR劫持

HITS算法

Google PR劫持

Matt Cutts談PR和PR更新

更多您感興趣的搜索