搜索引擎怎樣抓到你？

搜索引擎通常通過(guò)以下方式來(lái)抓取您的網(wǎng)頁(yè)內(nèi)容： 1. 網(wǎng)站提交：您可以將您的網(wǎng)站提交給各大搜索引擎，以便搜索引擎了解您的網(wǎng)站存在。 2. 網(wǎng)絡(luò)爬蟲(chóng)：搜索引擎使用自己的網(wǎng)絡(luò)爬蟲(chóng)程序，定期檢索并抓取互聯(lián)網(wǎng)上的內(nèi)容。當(dāng)您的網(wǎng)站被網(wǎng)絡(luò)爬蟲(chóng)訪問(wèn)時(shí)，搜索引擎就可以抓取您的網(wǎng)頁(yè)內(nèi)容。 3. 外部鏈接：如果您的網(wǎng)站被其他網(wǎng)站所鏈接，搜索引擎可以通過(guò)這些鏈接進(jìn)入您的網(wǎng)站并抓取您的網(wǎng)頁(yè)內(nèi)容。 4. 社交媒體：如果您在社交媒體上發(fā)布了鏈接到您的網(wǎng)站的內(nèi)容，搜索引擎可以通過(guò)這些鏈接進(jìn)入您的網(wǎng)站并抓取您的網(wǎng)頁(yè)內(nèi)容。總之，只要您的網(wǎng)站存在于互聯(lián)網(wǎng)上并具有一定的可訪問(wèn)性，搜索引擎就有可能抓取您的網(wǎng)頁(yè)內(nèi)容。

Public @ 2023-06-07 04:00:10

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(chóng)（Spider）：搜索引擎會(huì)派遣網(wǎng)絡(luò)爬蟲(chóng)，搜索引擎爬蟲(chóng)通過(guò)掃描互聯(lián)網(wǎng)上的網(wǎng)頁(yè)，并收集這些網(wǎng)頁(yè)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(yè)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(gè)大型的索引庫(kù)中，以便后續(xù)快速查詢。 3. 檢索（Retrieval）：當(dāng)用戶輸入查詢?cè)~時(shí)，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(dòng)化為目標(biāo)的Google，也肯定有人工因素。去年就曾經(jīng)有人報(bào)道（http://www.searchbistro.com/index.php?/archives/19-Google-Secret-Lab,-Prelude.html），Google在很多國(guó)家的大學(xué)招募學(xué)生，進(jìn)行搜索引擎結(jié)果的評(píng)價(jià)工作

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

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(chēng)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

搜索引擎體系結(jié)構(gòu)

搜索引擎基本結(jié)構(gòu)一般包括：搜索器、索引器、檢索器、用戶接口等四個(gè)功能模塊。1、搜索器：搜索器也叫網(wǎng)絡(luò)蜘蛛，是搜索引擎用來(lái)爬行和抓取網(wǎng)頁(yè)的一個(gè)自動(dòng)程序，在系統(tǒng)后臺(tái)不停歇地在互聯(lián)網(wǎng)各個(gè)節(jié)點(diǎn)爬行，在爬行過(guò)程中盡可能快的發(fā)現(xiàn)和抓取網(wǎng)頁(yè)。2、索引器。它的主要功能是理解搜索器所采集的網(wǎng)頁(yè)信息，并從中抽取索引項(xiàng)。3、檢索器。其功能是快速查找文檔，進(jìn)行文檔與查詢的相關(guān)度評(píng)價(jià)，對(duì)要輸出的結(jié)果進(jìn)行排序。4、用戶接口。

Public @ 2018-03-04 16:22:54

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[ DB ] CONNECT:[ UseTime:0.026127s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_config` [ RunTime:0.018506s ]
[ SQL ] SELECT * FROM `ob_config` [ RunTime:0.017599s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_config', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 25, 'extra' => NULL, ) ]
[ SQL ] SHOW COLUMNS FROM `ob_hook` [ RunTime:0.018394s ]
[ SQL ] SELECT `id`,`name`,`addon_list` FROM `ob_hook` [ RunTime:0.019587s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_hook', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 3, 'extra' => NULL, ) ]
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.018592s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 8552 LIMIT 1 [ RunTime:0.017557s ]
[ 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:0.017860s ]
[ 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:0.018058s ]
[ 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:0.018130s ]
[ 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` = 8552 LIMIT 1 [ RunTime:0.017507s ]
[ 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=8552 [ RunTime:0.019997s ]
[ 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:0.024650s ]
[ 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:0.035441s ]
[ 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:0.024349s ]
[ 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:0.035069s ]
[ 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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搜索引擎怎樣抓到你？

搜索引擎工作原理

搜索引擎排名的人工干預(yù)

搜索引擎工作原理

搜索引擎體系結(jié)構(gòu)

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