夜夜澡天天碰人人爱av,久久久久国产一区二区,国产精品9999久久久久仙踪林

日本少妇高潮久久久久久_东京热一区二区三区无码视频_国内精品人妻久久毛片app_男人撕开奶罩揉吮奶头视频_少妇交换做爰做到高潮_睡错了人妻公h_国产男女猛烈无遮挡a片漫画_男女啪啪做爰高潮全过有多钱_国产猛男猛女超爽免费视频

搜索引擎的工作原理

搜索引擎的工作原理可以簡(jiǎn)單地概括為以下幾個(gè)步驟： 1. 搜索引擎的爬蟲(chóng)程序從網(wǎng)絡(luò)上收集網(wǎng)頁(yè)并建立一個(gè)索引，這個(gè)索引包括每個(gè)網(wǎng)頁(yè)的關(guān)鍵詞、標(biāo)題、鏈接等信息。 2. 用戶輸入搜索關(guān)鍵詞，搜索引擎會(huì)根據(jù)這個(gè)關(guān)鍵詞來(lái)查找索引，找到與該關(guān)鍵詞相關(guān)的網(wǎng)頁(yè)。 3. 搜索引擎會(huì)對(duì)這些相關(guān)網(wǎng)頁(yè)進(jìn)行排序，通常是按照重要性和相關(guān)性等因素來(lái)排序，然后呈現(xiàn)給用戶。 4. 用戶點(diǎn)擊搜索結(jié)果中的鏈接，進(jìn)入相應(yīng)網(wǎng)頁(yè)。 5. 搜索引擎會(huì)記錄用戶的搜索行為，根據(jù)用戶的搜索歷史和行為等信息，不斷優(yōu)化搜索結(jié)果的準(zhǔn)確性和用戶體驗(yàn)。

Public @ 2023-04-17 07:00:08

搜索引擎網(wǎng)頁(yè)去重算法分析

相關(guān)統(tǒng)計(jì)數(shù)據(jù)表明：互聯(lián)網(wǎng)上近似重復(fù)的網(wǎng)頁(yè)的數(shù)量占網(wǎng)頁(yè)總數(shù)量的比例高達(dá)29%，完全相同的網(wǎng)頁(yè)大約占網(wǎng)頁(yè)總數(shù)量的22%.研究表明，在一個(gè)大型的信息采集系統(tǒng)中，30%的網(wǎng)頁(yè)是和另外70%的網(wǎng)頁(yè)完全重復(fù)或近似重復(fù)的。即：互聯(lián)網(wǎng)的網(wǎng)頁(yè)中相當(dāng)高的比例的網(wǎng)頁(yè)內(nèi)容是近似相同或完全相同的!搜索爬蟲(chóng)抓取會(huì)產(chǎn)生網(wǎng)頁(yè)重復(fù)的類型：1.多個(gè)URL地址指向同一網(wǎng)頁(yè)以及鏡像站點(diǎn)如：www.sina.com 和www.sina.c

Public @ 2020-07-15 16:21:55

搜索引擎技術(shù)揭密：中文分詞技術(shù)

信息的飛速增長(zhǎng)，使搜索引擎成為人們查找信息的首選工具，Google、百度、中國(guó)搜索等大型搜索引擎一直是人們討論的話題。隨著搜索市場(chǎng)價(jià)值的不斷增加，越來(lái)越多的公司開(kāi)發(fā)出自己的搜索引擎，阿里巴巴的商機(jī)搜索、8848的購(gòu)物搜索等也陸續(xù)面世，自然，搜索引擎技術(shù)也成為技術(shù)人員關(guān)注的熱點(diǎn)。搜索引擎技術(shù)的研究，國(guó)外比中國(guó)要早近十年，從最早的Archie，到后來(lái)的Excite，以及altvista、overtur

Public @ 2011-06-23 16:12:35

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(chóng)（如螞蟻和蜘蛛）。抓取是指通過(guò)握住或接觸來(lái)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

搜索引擎怎樣抓到你？

用戶行為方式怎樣影響搜索引擎排名結(jié)果，是很多SEO一直關(guān)心探討的問(wèn)題。前一陣在點(diǎn)石論壇上就看到關(guān)于在百度大量點(diǎn)擊搜索結(jié)果中自己的網(wǎng)站，從而進(jìn)一步提高排名的討論。其邏輯是，搜索結(jié)果中的某個(gè)網(wǎng)站被點(diǎn)擊次數(shù)越多，說(shuō)明越有用，用戶越喜歡，搜索引擎會(huì)更進(jìn)一步提高這個(gè)網(wǎng)站的排名。不過(guò)這種用戶行為方式是噪聲很大的數(shù)據(jù)，極容易作弊。搜索引擎要在這些數(shù)據(jù)中提煉出精華非常困難。前幾天Google員工JohnMu就在G

Public @ 2015-05-11 16:21:51

更多您感興趣的搜索

基本文件流程錯(cuò)誤 SQL 調(diào)試

/www/wwwroot/briline.net/public/index.php ( 0.79 KB )
/www/wwwroot/briline.net/public/public.php ( 1.08 KB )
/www/wwwroot/briline.net/thinkphp/start.php ( 0.73 KB )
/www/wwwroot/briline.net/thinkphp/base.php ( 2.66 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Loader.php ( 19.47 KB )
/www/wwwroot/briline.net/vendor/composer/autoload_namespaces.php ( 0.21 KB )
/www/wwwroot/briline.net/vendor/composer/autoload_psr4.php ( 0.84 KB )
/www/wwwroot/briline.net/vendor/composer/autoload_classmap.php ( 0.14 KB )
/www/wwwroot/briline.net/vendor/composer/autoload_files.php ( 0.42 KB )
/www/wwwroot/briline.net/vendor/qiniu/php-sdk/src/Qiniu/functions.php ( 7.10 KB )
/www/wwwroot/briline.net/vendor/qiniu/php-sdk/src/Qiniu/Config.php ( 0.70 KB )
/www/wwwroot/briline.net/vendor/topthink/think-captcha/src/helper.php ( 1.59 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Route.php ( 59.82 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Config.php ( 6.03 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Validate.php ( 40.27 KB )
/www/wwwroot/briline.net/vendor/topthink/think-queue/src/config.php ( 0.77 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Console.php ( 21.22 KB )
/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 )
/www/wwwroot/briline.net/thinkphp/library/think/Env.php ( 1.25 KB )
/www/wwwroot/briline.net/thinkphp/helper.php ( 17.86 KB )
/www/wwwroot/briline.net/app/function.php ( 0.78 KB )
/www/wwwroot/briline.net/app/extend.php ( 13.29 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Debug.php ( 7.06 KB )
/www/wwwroot/briline.net/app/common/model/Config.php ( 0.78 KB )
/www/wwwroot/briline.net/app/common/model/ModelBase.php ( 12.18 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Model.php ( 66.83 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Db.php ( 6.54 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Log.php ( 5.84 KB )
/www/wwwroot/briline.net/thinkphp/library/think/db/connector/Mysql.php ( 3.94 KB )
/www/wwwroot/briline.net/thinkphp/library/think/db/Connection.php ( 29.97 KB )
/www/wwwroot/briline.net/thinkphp/library/think/db/Query.php ( 86.80 KB )
/www/wwwroot/briline.net/thinkphp/library/think/db/builder/Mysql.php ( 2.16 KB )
/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 )
/www/wwwroot/briline.net/thinkphp/library/think/cache/driver/File.php ( 7.46 KB )
/www/wwwroot/briline.net/thinkphp/library/think/cache/Driver.php ( 5.52 KB )
/www/wwwroot/briline.net/app/common/behavior/InitHook.php ( 1.25 KB )
/www/wwwroot/briline.net/app/common/model/Hook.php ( 0.77 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Lang.php ( 6.95 KB )
/www/wwwroot/briline.net/thinkphp/lang/zh-cn.php ( 3.85 KB )
/www/wwwroot/briline.net/app/route.php ( 0.91 KB )
/www/wwwroot/briline.net/app/index/config.php ( 0.96 KB )
/www/wwwroot/briline.net/app/index/common.php ( 0.68 KB )
/www/wwwroot/briline.net/app/index/controller/Wiki.php ( 2.44 KB )
/www/wwwroot/briline.net/app/index/controller/IndexBase.php ( 1.10 KB )
/www/wwwroot/briline.net/app/common/controller/ControllerBase.php ( 4.75 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Controller.php ( 6.20 KB )
/www/wwwroot/briline.net/thinkphp/library/traits/controller/Jump.php ( 4.97 KB )
/www/wwwroot/briline.net/thinkphp/library/think/View.php ( 6.86 KB )
/www/wwwroot/briline.net/thinkphp/library/think/view/driver/Think.php ( 5.61 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Template.php ( 46.46 KB )
/www/wwwroot/briline.net/thinkphp/library/think/template/driver/File.php ( 2.24 KB )
/www/wwwroot/briline.net/app/index/logic/Wiki.php ( 6.16 KB )
/www/wwwroot/briline.net/app/index/logic/IndexBase.php ( 0.79 KB )
/www/wwwroot/briline.net/app/common/logic/LogicBase.php ( 0.83 KB )
/www/wwwroot/briline.net/app/common/model/Article.php ( 0.78 KB )
/www/wwwroot/briline.net/app/common/model/ArticleTongji.php ( 0.79 KB )
/www/wwwroot/briline.net/thinkphp/library/think/paginator/driver/Bootstrap.php ( 5.90 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Paginator.php ( 9.45 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Collection.php ( 8.63 KB )
/www/wwwroot/briline.net/runtime/temp/ead4923c25a6b3f986358f7070f93dfa.php ( 56.51 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Response.php ( 8.64 KB )
/www/wwwroot/briline.net/thinkphp/library/think/debug/Html.php ( 4.27 KB )

[ DB ] CONNECT:[ UseTime:0.021929s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.015822s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 7344 LIMIT 1 [ RunTime:0.014974s ]
[ 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:0.015140s ]
[ 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:0.015432s ]
[ 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:0.016125s ]
[ 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` = 7344 LIMIT 1 [ RunTime:0.014820s ]
[ 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=7344 [ RunTime:0.207704s ]
[ 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:0.022142s ]
[ 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:0.040924s ]
[ 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:0.022296s ]
[ 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:0.035038s ]
[ 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', ) ]

0.618135s

Categories

Tags

搜索引擎的工作原理

搜索引擎網(wǎng)頁(yè)去重算法分析

搜索引擎技術(shù)揭密：中文分詞技術(shù)

爬行和抓取

搜索引擎怎樣抓到你？

更多您感興趣的搜索

Categories

Tags

搜索引擎的工作原理

搜索引擎網(wǎng)頁(yè)去重算法分析

搜索引擎技術(shù)揭密：中文分詞技術(shù)

爬行和抓取

搜索引擎怎樣抓到你？

更多您感興趣的搜索

搜索引擎怎樣抓到你？