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Google的核心軟件稱為 PageRank(網(wǎng)頁(yè)級(jí)別)，這是由Google創(chuàng)始人 Larry Page 和 Sergey Brin 在斯坦福大學(xué)開發(fā)出的一套用于網(wǎng)頁(yè)評(píng)級(jí)的系統(tǒng)，網(wǎng)頁(yè)級(jí)別是所有Google網(wǎng)絡(luò)搜索工具的基礎(chǔ)。作為組織管理工具，網(wǎng)頁(yè)級(jí)別利用了互聯(lián)網(wǎng)獨(dú)特的民主特性及其巨大的鏈接結(jié)構(gòu)。實(shí)質(zhì)上，當(dāng)從網(wǎng)頁(yè) A 鏈接到網(wǎng)頁(yè) B 時(shí)，Google 就認(rèn)為"網(wǎng)頁(yè) A 投了網(wǎng)頁(yè) B 一票"。Google 根據(jù)網(wǎng)頁(yè)的得票數(shù)評(píng)定其重要性。然而，除了考慮網(wǎng)頁(yè)得票數(shù)（即鏈接）的純數(shù)量之外，Google 還要分析投票的網(wǎng)頁(yè)。"重要"的網(wǎng)頁(yè)所投出的票就會(huì)有更高的權(quán)重，并且有助于提高其它網(wǎng)頁(yè)的"重要性"。

重要的、高質(zhì)量的網(wǎng)頁(yè)會(huì)獲得較高的網(wǎng)頁(yè)級(jí)別。Google 在排列其搜索結(jié)果時(shí)，都會(huì)考慮每個(gè)網(wǎng)頁(yè)的級(jí)別。當(dāng)然，如果不能滿足您的查詢要求，網(wǎng)頁(yè)級(jí)別再高對(duì)您來(lái)說(shuō)也毫無(wú)意義。因此，Google 將網(wǎng)頁(yè)級(jí)別與完善的文本匹配技術(shù)結(jié)合在一起，為您找到最重要、最有用的網(wǎng)頁(yè)。Google 所關(guān)注的遠(yuǎn)不只是關(guān)鍵詞在網(wǎng)頁(yè)上出現(xiàn)的次數(shù)，它還對(duì)該網(wǎng)頁(yè)的內(nèi)容（以及該網(wǎng)頁(yè)所鏈接的內(nèi)容）進(jìn)行全面檢查，從而確定該網(wǎng)頁(yè)是否滿足您的查詢要求。

Google 以其復(fù)雜而全自動(dòng)的搜索方法排除了任何人為因素對(duì)搜索結(jié)果的影響。雖然Google也在搜索結(jié)果旁刊登相關(guān)廣告，但沒(méi)人能花錢買到更高的網(wǎng)頁(yè)級(jí)別，從而保證了網(wǎng)頁(yè)排名的客觀公正。

文章來(lái)源：Google幫助文檔

來(lái)源：月光博客

Public @ 2012-10-28 15:39:07

Google PageRank的計(jì)算源代碼

威海鏈接原理威海PR
2524

最近對(duì)google的PageRank(網(wǎng)頁(yè)等級(jí))比較感興趣，一直想知道如何不用google toolbar來(lái)獲取pr值?？嗫嗨阉髦?找到如下代碼:<?php/**This code is released unto the public domain*///header("Content-Type: text/plain; charset=utf-8");define(

Public @ 2022-12-07 15:39:09

HITS算法

威海鏈接原理威海HITS算法
2759

HITS 算法是由康奈爾大學(xué)( Cornell University ) 的Jon Kleinberg 博士于1997 年首先提出的,為IBM 公司阿爾馬登研究中心( IBM Almaden Research Center) 的名為“CLEVER”的研究項(xiàng)目中的一部分。英文全稱Hyperlink-Induced Topic Search算法由來(lái)HITS 算法是由康奈爾大學(xué)( Cornell Uni

Public @ 2022-03-03 15:39:12

如何提高網(wǎng)站的Google PR值

威海鏈接原理威海PR
2839

原著：David Callan 編譯：Karen 參考：Google的原罪--網(wǎng)頁(yè)序列等級(jí) 內(nèi)容摘要：無(wú)論是對(duì)普通網(wǎng)絡(luò)沖浪者還是網(wǎng)站管理員來(lái)說(shuō)，Google都是目前世界范圍內(nèi)最受歡迎的搜索引擎。它每天處理的搜索請(qǐng)求高達(dá)1.5億次，幾乎占全球所有搜索量的1/3。網(wǎng)絡(luò)沖浪者對(duì)Google情有獨(dú)鐘，是由于Google所提供的快速搜索速度及高命中率搜索結(jié)果。這些都是基于Google的復(fù)雜文本匹配運(yùn)算法則

Public @ 2011-02-03 15:39:08

Google PageRank的計(jì)算源代碼

威海鏈接原理威海PR
2524

最近對(duì)google的PageRank(網(wǎng)頁(yè)等級(jí))比較感興趣，一直想知道如何不用google toolbar來(lái)獲取pr值。苦苦搜索之后,找到如下代碼:<?php/**This code is released unto the public domain*///header("Content-Type: text/plain; charset=utf-8");define(

Public @ 2022-12-07 15:39:09

更多您感興趣的搜索

基本文件流程錯(cuò)誤 SQL 調(diào)試

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[ DB ] CONNECT:[ UseTime:0.022584s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.016436s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 1561 LIMIT 1 [ RunTime:0.015274s ]
[ 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:0.015659s ]
[ 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:0.015813s ]
[ 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:0.016480s ]
[ 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` = 1561 LIMIT 1 [ RunTime:0.015208s ]
[ 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=1561 [ RunTime:0.016205s ]
[ 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:0.022750s ]
[ 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:0.032872s ]
[ 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:0.024647s ]
[ 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:0.039350s ]
[ 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', ) ]

0.422396s

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Google PageRank(網(wǎng)頁(yè)級(jí)別)介紹

Google PageRank的計(jì)算源代碼

HITS算法

如何提高網(wǎng)站的Google PR值

Google PageRank的計(jì)算源代碼

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