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百度搜索引擎工作原理-4-外部投票

外部投票是指其他網(wǎng)站鏈接到你的網(wǎng)站的數(shù)量和質(zhì)量。百度搜索引擎通過(guò)外部投票來(lái)判斷你網(wǎng)站的權(quán)威性和可信度，因?yàn)槿绻渌W(wǎng)站鏈接到你的網(wǎng)站，說(shuō)明你的內(nèi)容具有一定的價(jià)值和權(quán)威性。而且，如果鏈接到你網(wǎng)站的其他網(wǎng)站本身也是權(quán)威性和可信度高的網(wǎng)站，那么你的權(quán)威性和可信度也會(huì)被提升。因此，外部投票對(duì)于提高自己網(wǎng)站在百度搜索引擎中的排名非常重要。同時(shí)，需要注意的是，如果你的網(wǎng)站有過(guò)多的低質(zhì)量或垃圾站點(diǎn)鏈接到你的網(wǎng)站，那么你的權(quán)威性和可信度會(huì)受到負(fù)面影響。所以，建立高質(zhì)量的外部鏈接是非常重要的。

Public @ 2023-05-31 01:50:17

搜索引擎工作原理

基本流程抓取網(wǎng)頁(yè)。每個(gè)獨(dú)立的搜索引擎都有自己的網(wǎng)頁(yè)抓取程序爬蟲(chóng)（Spider）。爬蟲(chóng)順著網(wǎng)頁(yè)中的超鏈接，從這個(gè)網(wǎng)站爬到另一個(gè)網(wǎng)站，通過(guò)超鏈接分析連續(xù)訪問(wèn)抓取更多網(wǎng)頁(yè)。被抓取的網(wǎng)頁(yè)被稱之為網(wǎng)頁(yè)快照。由于互聯(lián)網(wǎng)中超鏈接的應(yīng)用很普遍，理論上，從一定范圍的網(wǎng)頁(yè)出發(fā)，就能搜集到絕大多數(shù)的網(wǎng)頁(yè)。處理網(wǎng)頁(yè)。搜索引擎抓到網(wǎng)頁(yè)后，還要做大量的預(yù)處理工作，才能提供檢索服務(wù)。其中，最重要的就是提取關(guān)鍵詞，建立索引庫(kù)和索

Public @ 2015-11-08 16:21:49

爬行、抓取、索引、收錄，指的都是什么？

一位讀者在蜘蛛抓取配額是什么這篇帖子留言：不對(duì)呀，這個(gè)index標(biāo)簽，是指告訴蜘蛛可以抓取該頁(yè)面，那么noindex不就是不允許抓取該頁(yè)面嗎？！那么為什么文章最后的幾個(gè)說(shuō)明里有“noindex標(biāo)簽不能節(jié)省抓取份額。搜索引擎要知道頁(yè)面上有noindex標(biāo)簽，就得先抓取這個(gè)頁(yè)面，所以并不節(jié)省抓取份額?！绷粞哉f(shuō)明，這位讀者并沒(méi)有太明白什么是抓取，什么是索引，index和noindex標(biāo)簽的意義又是什么。

Public @ 2021-09-23 16:21:52

百度搜索引擎工作原理-3-檢索排序

檢索排序是百度搜索引擎中的一個(gè)重要環(huán)節(jié)，它決定了搜索結(jié)果的排序方式，確保用戶能夠獲得最相關(guān)、最有用的搜索結(jié)果。百度搜索引擎的檢索排序主要分為兩個(gè)階段：候選集生成和排序打分。 1. 候選集生成：在這一階段，百度搜索引擎首先通過(guò)用戶輸入的關(guān)鍵詞進(jìn)行網(wǎng)頁(yè)索引的初步篩選，選取與關(guān)鍵詞相關(guān)的網(wǎng)頁(yè)進(jìn)行后續(xù)處理。百度搜索引擎通過(guò)倒排索引技術(shù)，將海量的網(wǎng)頁(yè)按關(guān)鍵詞進(jìn)行索引，以加快搜索速度和提高搜索結(jié)果的相關(guān)

Public @ 2023-07-24 20:00:45

百度搜索引擎工作原理-3-檢索排序

搜索引擎索引系統(tǒng)概述眾所周知，搜索引擎的主要工作過(guò)程包括：抓取、存儲(chǔ)、頁(yè)面分析、索引、檢索等幾個(gè)主要過(guò)程。上一章我們主要介紹了部分抓取存儲(chǔ)環(huán)節(jié)中的內(nèi)容，此章簡(jiǎn)要介紹一下索引系統(tǒng)。在以億為單位的網(wǎng)頁(yè)庫(kù)中查找特定的某些關(guān)鍵詞猶如大海里面撈針，也許一定的時(shí)間內(nèi)可以完成查找，但是用戶等不起，從用戶體驗(yàn)角度我們必須在毫秒級(jí)別給予用戶滿意的結(jié)果，否則用戶只能流失。怎樣才能達(dá)到這種要求呢？如果能知道用戶查找的關(guān)

Public @ 2022-09-15 16:21:46

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基本文件流程錯(cuò)誤 SQL 調(diào)試

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[ DB ] CONNECT:[ UseTime:0.024340s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.017479s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 8214 LIMIT 1 [ RunTime:0.016611s ]
[ 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:0.016840s ]
[ 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:0.017641s ]
[ 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:0.017753s ]
[ 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` = 8214 LIMIT 1 [ RunTime:0.018624s ]
[ 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=8214 [ RunTime:0.017711s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海搜索引擎工作原理' AND `status` <> -1 LIMIT 1 [ RunTime:0.024586s ]
[ 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` = '威海搜索引擎工作原理' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.055497s ]
[ 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` = '威海百度搜索引擎工作原理（百度搜索資源平臺(tái)）' AND `status` <> -1 LIMIT 1 [ RunTime:0.023589s ]
[ 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` = '威海百度搜索引擎工作原理（百度搜索資源平臺(tái)）' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.042282s ]
[ 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', ) ]

0.495043s

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百度搜索引擎工作原理-4-外部投票

搜索引擎工作原理

爬行、抓取、索引、收錄，指的都是什么？

百度搜索引擎工作原理-3-檢索排序

百度搜索引擎工作原理-3-檢索排序

更多您感興趣的搜索

Categories

Tags

百度搜索引擎工作原理-4-外部投票

搜索引擎工作原理

爬行、抓取、索引、收錄，指的都是什么？

百度搜索引擎工作原理-3-檢索排序

百度搜索引擎工作原理-3-檢索排序

更多您感興趣的搜索

爬行、抓取、索引、收錄，指的都是什么？