天域苍穹,女人书籍排行榜

Google PageRank是一個用于評估網(wǎng)頁重要性的算法。它是Google搜索引擎的一個重要部分，用于確定搜索結(jié)果頁面的排名。PageRank算法根據(jù)網(wǎng)站的鏈接數(shù)量、鏈接質(zhì)量和其他因素來確定網(wǎng)站的重要性和權(quán)威性。 PageRank算法是基于網(wǎng)頁鏈接結(jié)構(gòu)來評估網(wǎng)頁重要性的。它將網(wǎng)頁的價值評估為其相關(guān)頁面的數(shù)量和質(zhì)量的函數(shù)。具有高PageRank值的頁面通常位于搜索結(jié)果的前幾頁。因此，PageRank對于網(wǎng)站擁有者和網(wǎng)絡(luò)市場營銷人員來說非常重要，他們希望他們的網(wǎng)站位于搜索結(jié)果的最前面，以便吸引更多的流量和潛在客戶。 PageRank是一種非常復雜的算法，它綜合考慮了許多因素，包括鏈接質(zhì)量、鏈接數(shù)量、網(wǎng)站內(nèi)容的質(zhì)量、網(wǎng)站的年齡和其他因素。雖然PageRank已經(jīng)過時，但它仍然是搜索引擎優(yōu)化中一個基本的概念。

Public @ 2023-06-25 11:00:15

淺談網(wǎng)頁搜索排序中的投票模型

前些天讀了一本《選舉的困境》，其中有一章，從美國的選舉制度說起，介紹美國選舉制度的不足，然后針對其不足，提出種種改善，然而每種改善都有其各自的問題，其中的變化很有趣。先說美國選舉制度，美國的總統(tǒng)選舉是一種“贏者通吃”的方式，每個州根據(jù)其人口多少，有幾十或幾百的“州票”，州里的人對總統(tǒng)候選人進行選舉，在某個州獲得票最多的那個候選人，獲得這個州所有的“州票”，然后統(tǒng)計所有候選人的“州票”多少，獲得最多

Public @ 2010-03-16 16:21:58

Google PR 值是什么？怎樣計算？

威海鏈接原理威海PR
3069

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，它的PR值也會隨之提高。具體地，PR值的計算公式為： PR(A) = (1-d) + d(PR(t1)/C(t1) + ... + PR(tn)/C

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

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)更準確。當然目前我們內(nèi)部的PR計算比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

了解什么是PR

威海鏈接原理威海PR
3008

PR是Google排名算法的200多個因素之一，而且重要性已經(jīng)下降很多。當然，PR還是Google排名算法中的重要因素之一。除了直接影響排名，PR的重要性還體現(xiàn)以下幾點。（1）網(wǎng)站收錄深度和總頁面數(shù)。搜索引擎蜘蛛爬行時間及數(shù)據(jù)庫的空間都是有限的。對大中型網(wǎng)站來說，首頁PR值是帶動網(wǎng)站收錄的重要因素之一。（2）更新頻率。PR值越高的網(wǎng)站，搜索引擎蜘蛛訪問得就越頻繁，網(wǎng)站上出現(xiàn)新頁面或舊頁面上內(nèi)容更新

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

更多您感興趣的搜索

基本文件流程錯誤 SQL 調(diào)試

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[ DB ] CONNECT:[ UseTime:0.022656s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.016169s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 9407 LIMIT 1 [ RunTime:0.015285s ]
[ 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:0.015502s ]
[ 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:0.015738s ]
[ 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:0.016362s ]
[ 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` = 9407 LIMIT 1 [ RunTime:0.015154s ]
[ 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=9407 [ RunTime:0.017607s ]
[ 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:0.022517s ]
[ 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:0.039471s ]
[ 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:0.022966s ]
[ 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:0.031459s ]
[ 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', ) ]

0.418818s

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Categories

Tags

Google PageRank(網(wǎng)頁級別)介紹

淺談網(wǎng)頁搜索排序中的投票模型

Google PR 值是什么？怎樣計算？

Matt Cutts談PR和PR更新

了解什么是PR

更多您感興趣的搜索

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 PageRank(網(wǎng)頁級別)介紹

淺談網(wǎng)頁搜索排序中的投票模型

Google PR 值是什么？怎樣計算？

Matt Cutts談PR和PR更新

了解什么是PR

更多您感興趣的搜索

Google PR 值是什么？怎樣計算？