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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，例如新聞，圖片，視頻等等，以便后續(xù)根據(jù)不同類別進(jìn)行檢索。 4.關(guān)鍵詞搜索：當(dāng)用戶輸入關(guān)鍵詞進(jìn)行搜索時，搜索引擎會根據(jù)用戶關(guān)鍵詞的關(guān)鍵字和定義的搜索算法去搜索自身的索引庫，找出匹配度較高的內(nèi)容進(jìn)行檢索，并將搜索結(jié)果返回給用戶。 5.排序：搜索引擎會根據(jù)不同的算法，對檢索出的結(jié)果進(jìn)行排序，并在搜索結(jié)果里面進(jìn)行展示，以便用戶可以快速看到需要的內(nèi)容。

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

搜索引擎工作原理

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)

Public @ 2023-02-24 00:23:15

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

搜索引擎工作原理

搜索引擎的工作原理大致如下： 1. 網(wǎng)絡(luò)爬蟲（Spider）：搜索引擎會派遣網(wǎng)絡(luò)爬蟲，搜索引擎爬蟲通過掃描互聯(lián)網(wǎng)上的網(wǎng)頁，并收集這些網(wǎng)頁的信息，包括標(biāo)題、關(guān)鍵詞、描述、網(wǎng)址、內(nèi)容、超鏈接等。 2. 索引（Index）：搜索引擎將收集到的網(wǎng)頁內(nèi)容進(jìn)行分析，提取出其中的關(guān)鍵詞，并將這些關(guān)鍵詞存入一個大型的索引庫中，以便后續(xù)快速查詢。 3. 檢索（Retrieval）：當(dāng)用戶輸入查詢詞時，搜索引擎

Public @ 2023-04-14 20:00:35

搜索引擎排名的人工干預(yù)

雖然搜索引擎排名技術(shù)和算法一直在提高，但我相信所有搜索引擎都或多或少有人工干預(yù)，就算最標(biāo)榜一切以算法和自動化為目標(biāo)的Google，也肯定有人工因素。去年就曾經(jīng)有人報道（http://www.searchbistro.com/index.php?/archives/19-Google-Secret-Lab,-Prelude.html），Google在很多國家的大學(xué)招募學(xué)生，進(jìn)行搜索引擎結(jié)果的評價工作

Public @ 2022-08-25 16:21:50

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基本文件流程錯誤 SQL 調(diào)試

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[ DB ] CONNECT:[ UseTime:0.021133s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.015222s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 6130 LIMIT 1 [ RunTime:0.014240s ]
[ 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:0.016404s ]
[ 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:0.014769s ]
[ 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:0.015174s ]
[ 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` = 6130 LIMIT 1 [ RunTime:0.014412s ]
[ 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=6130 [ RunTime:0.017891s ]
[ 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:0.022882s ]
[ 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:0.031539s ]
[ 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:0.021877s ]
[ 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:0.031588s ]
[ 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', ) ]

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搜索引擎工作的基礎(chǔ)流程與原理

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)

搜索引擎工作原理

搜索引擎排名的人工干預(yù)

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