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  搜索引擎工作原理

整理自網(wǎng)絡(luò)ChatGPT產(chǎn)生之內(nèi)容，文本內(nèi)容不具備參考意義，程序內(nèi)容及代碼片段有且僅有借鑒意義。

  

搜索引擎是一種用來搜索巨大的獲取到的信息的技術(shù)，它根據(jù)用戶輸入的關(guān)鍵字或問題，再搜索索引庫中獲取到的信息，以便提供相關(guān)網(wǎng)站頁面、新聞文檔、圖片和其他形式的信息來回答用戶提出的問題。

搜索引擎的一般工作原理是，將信息經(jīng)過索引化存在索引庫中，用戶通過輸入一定的關(guān)鍵字搜索時，搜索引擎從索引庫中搜索符合條件的結(jié)果項并返回；或者通過抓取網(wǎng)頁技術(shù)在搜索引擎開發(fā)過程中，根據(jù)搜索引擎的網(wǎng)絡(luò)爬蟲技術(shù)逐一抓取網(wǎng)頁，添加到自己的索引庫中，當(dāng)用戶搜索索引庫中有的結(jié)果時搜索引擎就會進(jìn)行排序，返回符合條件的搜索結(jié)果。

Public @ 2023-02-24 00:22:49 整理自網(wǎng)絡(luò)ChatGPT產(chǎn)生之內(nèi)容，文本內(nèi)容不具備參考意義，程序內(nèi)容有且僅有借鑒意義。

百度搜索引擎工作原理-5-結(jié)果展現(xiàn)

結(jié)構(gòu)化數(shù)據(jù)——助力站點獲得更多點擊網(wǎng)頁經(jīng)歷了抓取建庫，參與了排序計算，最終展現(xiàn)在搜索引擎用戶面前。目前在百度搜索左側(cè)結(jié)果展現(xiàn)形式很多，如：鳳巢、品牌專區(qū)、自然結(jié)果等，一條自然結(jié)果怎樣才能獲得更多的點擊，是站長要考慮的重要一環(huán)。目前自然結(jié)果里又分為兩類，見下圖，第一個，即結(jié)構(gòu)化展現(xiàn)，形式比較多樣。目前覆蓋80%的搜索需求，即80%的關(guān)鍵詞下會出現(xiàn)這種復(fù)雜展現(xiàn)樣式；第二個即一段摘要式展現(xiàn)，最原始的展現(xiàn)

Public @ 2021-09-11 16:21:45

百度搜索引擎工作原理-1-抓取建庫

百度搜索引擎的工作原理包括四個主要步驟：抓取建庫、索引和排序、查詢和展示。本文將詳細(xì)介紹第一步——抓取建庫。抓取建庫是指百度搜索引擎自動收集互聯(lián)網(wǎng)上的網(wǎng)頁，并將其存儲在一個龐大的數(shù)據(jù)庫中。這個過程是由自動化程序（稱為爬蟲或蜘蛛）執(zhí)行的。百度的爬蟲程序以網(wǎng)頁為基礎(chǔ)，從每個網(wǎng)頁的鏈接開始自動抓取所有相關(guān)的網(wǎng)頁，并將這些網(wǎng)頁保存在一個大型數(shù)據(jù)庫中。這個過程被稱為“爬行”，“爬取”或“抓取”。

Public @ 2023-04-06 19:50:54

搜索引擎如何抓取你的網(wǎng)頁

搜索引擎優(yōu)化（SEO）是搜索引擎有好的收錄網(wǎng)頁的過程，適當(dāng)?shù)腟EO有利于蜘蛛爬行你的網(wǎng)站，使你的內(nèi)容符合搜索引擎算法，以便確認(rèn)它與關(guān)鍵詞高度相關(guān)。優(yōu)化的目的就是使網(wǎng)頁的內(nèi)容便于蜘蛛理解，下面我就以百度新收錄的一篇內(nèi)容來進(jìn)行說明，我以一個完整標(biāo)題進(jìn)行搜索，其目的是能反映出更多關(guān)鍵詞在百度自然搜索的結(jié)果頁面，能更好的說明搜索引擎是如何抓取你的網(wǎng)頁的。搜索引擎如何抓取你的網(wǎng)頁網(wǎng)站優(yōu)化 SEO優(yōu)化 SE

Public @ 2019-08-19 16:22:21

搜索引擎工作的基礎(chǔ)流程與原理

搜索引擎的基本工作原理是：用戶向搜索引擎輸入一系列關(guān)鍵詞，搜索引擎會從自身擁有的網(wǎng)頁數(shù)據(jù)庫中根據(jù)相關(guān)算法去檢索出匹配度最高的搜索結(jié)果進(jìn)行顯示和返回給用戶。搜索引擎的基本流程包括： 1. 網(wǎng)頁爬蟲：搜索引擎會通過程序自動爬取網(wǎng)頁上的數(shù)據(jù)。 2. 網(wǎng)頁索引：搜索引擎會把所有爬取的數(shù)據(jù)進(jìn)行索引，并在索引中建立統(tǒng)一的編號，以便后續(xù)的檢索。 3. 網(wǎng)頁分類：搜索引擎會把所有索引的內(nèi)容進(jìn)行分類，

Public @ 2023-03-01 20:00:35

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基本文件流程錯誤 SQL 調(diào)試

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[ DB ] CONNECT:[ UseTime:0.027740s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_chatgpt` [ RunTime:0.019448s ]
[ SQL ] SELECT * FROM `ob_chatgpt` WHERE `id` = 125 LIMIT 1 [ RunTime:0.018609s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_chatgpt', '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:0.018885s ]
[ 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:0.019371s ]
[ 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:0.019760s ]
[ 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_chatgpt` WHERE `id` = 125 LIMIT 1 [ RunTime:0.018563s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_chatgpt', 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '4', 'ref' => 'const', 'rows' => 1, 'extra' => NULL, ) ]
[ SQL ] update `ob_chatgpt` set views=views+2 where id=125 [ RunTime:0.018617s ]
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.019424s ]
[ 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:0.027615s ]
[ 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` = '威海搜索引擎工作原理' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.043443s ]
[ 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` = '威海搜索引擎工作原理' AND `status` <> -1 LIMIT 1 [ RunTime:0.026027s ]
[ 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` = '威海搜索引擎工作原理' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.037661s ]
[ 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', ) ]

0.514850s

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搜索引擎工作原理

百度搜索引擎工作原理-5-結(jié)果展現(xiàn)

百度搜索引擎工作原理-1-抓取建庫

搜索引擎如何抓取你的網(wǎng)頁

搜索引擎工作的基礎(chǔ)流程與原理

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