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搜索引擎定义

搜索引擎是指根据一定的策略、运用特定的计算机程序从互联网上采集信息，在对信息进行组织和处理后，为用户提供检索服务，将检索的相关信息展示给用户的系统。搜索引擎是工作于互联网上的一门检索技术，它指在提高人们获取搜集信息的速度，为人们提供更好的网络使用环境。从功能和原理上搜索引擎大致被分为全文搜索引擎、元搜索引擎、垂直搜索引擎和目录搜索引擎等四大类。

搜索引擎发展到今天，基础架构和算法在技术上都已经基本成型和成熟。搜索引擎已经发展成为根据一定的策略、运用特定的计算机程序从互联网上搜集信息，在对信息进行组织和处理后，为用户提供检索服务，将用户检索相关的信息展示给用户的系统。

Public @ 2011-09-12 16:22:56

为什么我的网站在百度的收录量明显比原来降低了？

1. 网站被过度优化导致受到了算法惩罚，具体惩罚原因可以通过搜索资源平台发布的对外公告对照排查。2. 如果确认无作弊行为，网站又无法得到正常的排名，可以通过搜索资源平台反馈中心提交您的问题。

Public @ 2022-03-05 15:55:54

百度搜索如何进行HTTPS认证？

若您http的网站全站支持https，请前往搜索资源平台进行https认证

Public @ 2018-10-06 16:23:03

搜索引擎面临哪些问题

搜索引擎面临的问题包括以下几个方面： 1.信息质量问题：搜索引擎的搜索结果中可能存在低质量、冗余、虚假和抄袭的内容，影响用户的搜索体验。 2.搜索算法问题：搜索引擎的算法可能会出现偏见和错误，导致搜索结果与用户的需求不匹配。 3.隐私问题：在搜索过程中，搜索引擎会收集用户的搜索历史、IP地址、浏览记录等敏感信息，可能被黑客攻击或泄露给第三方，造成用户隐私泄露。 4.版权问题：搜索引擎的搜索

Public @ 2023-06-11 09:50:12

搜索引擎分类

搜索方式是搜索引擎的一个关键环节，大致可分为四种：全文搜索引擎、元搜索引擎、垂直搜索引擎和目录搜索引擎，它们各有特点并适用于不同的搜索环境。所以，灵活选用搜索方式是提高搜索引擎性能的重要途径。全文搜索引擎是利用爬虫程序抓取互联网上所有相关文章予以索引的搜索方式；元搜索引擎是基于多个搜索引擎结果并对之整合处理的二次搜索方式；垂直搜索引擎是对某一特定行业内数据进行快速检索的一种专业搜索方式；目录搜索引

Public @ 2009-09-30 16:22:55

更多您感兴趣的搜索

基本文件流程错误 SQL 调试

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[ DB ] CONNECT:[ UseTime:0.024956s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.017842s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 5439 LIMIT 1 [ RunTime:0.016898s ]
[ 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:0.017154s ]
[ 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:0.017539s ]
[ 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:0.017546s ]
[ 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` = 5439 LIMIT 1 [ RunTime:0.016893s ]
[ 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=5439 [ RunTime:0.019721s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海了解搜索引擎' AND `status` <> -1 LIMIT 1 [ RunTime:0.024117s ]
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[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海了解搜索引擎' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.039665s ]
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[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海搜索引擎' AND `status` <> -1 LIMIT 1 [ RunTime:0.023331s ]
[ 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' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.037038s ]
[ 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', ) ]

0.456384s

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