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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”。當(dāng)百度的爬蟲程序發(fā)現(xiàn)一個新的網(wǎng)頁時，它會訪問這個網(wǎng)頁，同時檢查其中的鏈接，并將這些鏈接添加到隊列中，以便后續(xù)抓取。這個過程會持續(xù)不斷，直到爬蟲程序抓取了整個互聯(lián)網(wǎng)上的所有相關(guān)網(wǎng)頁。在抓取建庫階段，百度的爬蟲程序遵循一定的規(guī)則和算法，以確保收集到的是高質(zhì)量、相關(guān)性強(qiáng)的網(wǎng)頁。例如，它會優(yōu)先抓取常更新的網(wǎng)站，盡量避免抓取重復(fù)的網(wǎng)頁，以及識別并避免一些可能會對搜索結(jié)果產(chǎn)生垃圾數(shù)據(jù)的網(wǎng)站等。總之，抓取建庫是百度搜索引擎實現(xiàn)高質(zhì)量搜索結(jié)果的關(guān)鍵步驟之一。百度通過完善的爬蟲程序和算法，不斷提高抓取的效率和準(zhǔn)確性，為用戶提供更加豐富、準(zhǔn)確、實用的搜索結(jié)果。

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

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

頭條搜索Bytespider基本流程

1. 確定搜索對象：首先需要確定搜索的關(guān)鍵詞或者主題，同時要考慮搜索的范圍和時間范圍。 2. 制定搜索策略：基于搜索對象和搜索范圍，制定針對性的搜索策略，選擇合適的搜索引擎，在搜索過程中要注意細(xì)節(jié)，如設(shè)置搜索選項等。 3. 搜集信息：第三步就是進(jìn)行搜索，搜集相關(guān)信息，可以應(yīng)用各種搜索工具，如搜索引擎、專業(yè)數(shù)據(jù)庫、社交媒體等，搜集到的信息需要進(jìn)行分類整理，提取有用的信息，剔除無效信息。 4.

Public @ 2023-06-11 13:50:15

百度搜索引擎工作原理-1-抓取建庫

Spider抓取系統(tǒng)的基本框架互聯(lián)網(wǎng)信息爆發(fā)式增長，如何有效的獲取并利用這些信息是搜索引擎工作中的首要環(huán)節(jié)。數(shù)據(jù)抓取系統(tǒng)作為整個搜索系統(tǒng)中的上游，主要負(fù)責(zé)互聯(lián)網(wǎng)信息的搜集、保存、更新環(huán)節(jié)，它像蜘蛛一樣在網(wǎng)絡(luò)間爬來爬去，因此通常會被叫做“spider”。例如我們常用的幾家通用搜索引擎蜘蛛被稱為：Baiduspdier、Googlebot、Sogou Web Spider等。Spider抓取系統(tǒng)是搜索

Public @ 2014-12-20 16:21:47

百度搜索引擎工作原理

最新更新章節(jié)：2019-03-04關(guān)于百度以及其它搜索引擎的工作原理，其實大家已經(jīng)討論過很多，但隨著科技的進(jìn)步、互聯(lián)網(wǎng)業(yè)的發(fā)展，各家搜索引擎都發(fā)生著巨大的變化，并且這些變化都是飛快的。我們設(shè)計這個章節(jié)的目的，除了從官方的角度發(fā)出一些聲音、糾正一些之前的誤讀外，還希望通過不斷更新內(nèi)容，與百度搜索引擎發(fā)展保持同步，給各位站長帶來最新的、與百度高相關(guān)的信息。本章主要內(nèi)容分為四個章節(jié)，分別為：抓取建庫；檢

Public @ 2014-04-22 16:21:48

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[ DB ] CONNECT:[ UseTime:0.023136s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_config` [ RunTime:0.016624s ]
[ SQL ] SELECT * FROM `ob_config` [ RunTime:0.015715s ]
[ 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:0.016565s ]
[ SQL ] SELECT `id`,`name`,`addon_list` FROM `ob_hook` [ RunTime:0.015541s ]
[ 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:0.016882s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 6882 LIMIT 1 [ RunTime:0.015679s ]
[ 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:0.015871s ]
[ 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:0.016163s ]
[ 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:0.016589s ]
[ 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` = 6882 LIMIT 1 [ RunTime:0.015682s ]
[ 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=6882 [ RunTime:0.026425s ]
[ 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:0.024232s ]
[ 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:0.031564s ]
[ 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）' AND `status` <> -1 LIMIT 1 [ RunTime:0.024454s ]
[ 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）' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.040196s ]
[ 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', ) ]

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百度搜索引擎工作原理-1-抓取建庫

搜索引擎排名的人工干預(yù)

頭條搜索Bytespider基本流程

百度搜索引擎工作原理-1-抓取建庫

百度搜索引擎工作原理

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