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爬行和抓取

爬行是指動(dòng)物的行動(dòng)方式，通常涉及身體的爬行和爬行的動(dòng)作，如爬行動(dòng)物（如蛇和蜥蜴）和爬行昆蟲（如螞蟻和蜘蛛）。抓取是指通過握住或接觸來獲取動(dòng)物或物體的行動(dòng)。抓取可以包括動(dòng)物的牙齒、爪子、手指、手掌和指甲等器官或物品如工具或表面。抓取通常是為了獲取食物或其他資源，或者以進(jìn)行自我保護(hù)或攻擊。

Public @ 2023-04-16 07:00:07

搜索引擎檢索系統(tǒng)是一種利用計(jì)算機(jī)程序和算法為用戶提供信息檢索服務(wù)的系統(tǒng)。其作用是在海量的信息中快速準(zhǔn)確地找到用戶需要的信息并返回給用戶。搜索引擎檢索系統(tǒng)包括以下幾個(gè)基本部分： 1. 爬蟲：負(fù)責(zé)收集互聯(lián)網(wǎng)上的網(wǎng)頁(yè)等信息，并將其保存到搜索引擎的數(shù)據(jù)庫(kù)中。 2. 索引器：通過對(duì)網(wǎng)頁(yè)內(nèi)容進(jìn)行分析和加工處理，建立一張包含關(guān)鍵詞和網(wǎng)頁(yè)鏈接的索引表，以便搜索引擎能夠快速地響應(yīng)用戶的檢索請(qǐng)求。 3. 檢

Public @ 2023-06-09 01:50:15

中文分詞和TF-IDF

中文分詞(Chinese Word Segmentation)指的是將一個(gè)漢字序列切分成一個(gè)一個(gè)單獨(dú)的詞。中文分詞是文本挖掘的基礎(chǔ)，對(duì)于輸入的一段中文，成功的進(jìn)行中文分詞，可以達(dá)到電腦自動(dòng)識(shí)別語(yǔ)句含義的效果。TF-IDF（term frequency–inverse document frequency）是一種用于信息搜索和信息挖掘的常用加權(quán)技術(shù)。在搜索、文獻(xiàn)分類和其他相關(guān)領(lǐng)域有廣泛的應(yīng)用。TF-

Public @ 2016-02-22 16:12:36

搜索引擎如何抓取你的網(wǎng)頁(yè)

搜索引擎優(yōu)化（SEO）是搜索引擎有好的收錄網(wǎng)頁(yè)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(yè)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(gè)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(yè)面，能更好的說明搜索引擎是如何抓取你的網(wǎng)頁(yè)的。搜索引擎如何抓取你的網(wǎng)頁(yè) 網(wǎng)站優(yōu)化 SEO優(yōu)化 SE

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

爬行和抓取

Public @ 2023-04-16 07:00:07

更多您感興趣的搜索

基本文件流程錯(cuò)誤 SQL 調(diào)試

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/www/wwwroot/briline.net/thinkphp/library/think/Error.php ( 3.59 KB )
/www/wwwroot/briline.net/thinkphp/convention.php ( 10.31 KB )
/www/wwwroot/briline.net/thinkphp/library/think/App.php ( 21.04 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Request.php ( 50.94 KB )
/www/wwwroot/briline.net/app/config.php ( 11.25 KB )
/www/wwwroot/briline.net/app/database.php ( 1.41 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Hook.php ( 4.76 KB )
/www/wwwroot/briline.net/app/tags.php ( 1.16 KB )
/www/wwwroot/briline.net/app/common/behavior/InitBase.php ( 8.17 KB )
/www/wwwroot/briline.net/app/common.php ( 23.29 KB )
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/www/wwwroot/briline.net/thinkphp/helper.php ( 17.86 KB )
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/www/wwwroot/briline.net/thinkphp/library/think/db/Builder.php ( 30.47 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Cache.php ( 6.17 KB )
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/www/wwwroot/briline.net/app/common/behavior/InitHook.php ( 1.25 KB )
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[ DB ] CONNECT:[ UseTime:0.019455s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_config` [ RunTime:0.014167s ]
[ SQL ] SELECT * FROM `ob_config` [ RunTime:0.013132s ]
[ 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:0.013850s ]
[ SQL ] SELECT `id`,`name`,`addon_list` FROM `ob_hook` [ RunTime:0.013086s ]
[ 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:0.014058s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 7296 LIMIT 1 [ RunTime:0.013002s ]
[ 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:0.013351s ]
[ 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:0.013552s ]
[ 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:0.013666s ]
[ 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` = 7296 LIMIT 1 [ RunTime:0.012902s ]
[ 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=7296 [ RunTime:0.015400s ]
[ 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:0.020048s ]
[ 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:0.036967s ]
[ 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` = '威海搜索引擎工作原理' AND `status` <> -1 LIMIT 1 [ RunTime:0.021148s ]
[ 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` = '威海搜索引擎工作原理' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.030272s ]
[ 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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爬行和抓取

搜索引擎檢索系統(tǒng)概述

中文分詞和TF-IDF

搜索引擎如何抓取你的網(wǎng)頁(yè)

爬行和抓取

更多您感興趣的搜索