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相关性（relevance）

威海seo术语威海相关性
3597

相关性指的是事物之间的关联程度或相似程度。在信息检索中，相关性通常描述了查询与搜索结果之间的匹配程度或相关性程度。一般来说，相关性越高，搜索结果越符合查询的意图，而反之则越不相关。相关性的评估通常由算法和模型来实现，例如TF-IDF、BM25等算法。

Public @ 2023-06-15 15:00:08

要害词排名（ranking）

要害词排名（ranking）是指对一组单词或术语按照其重要性或相关性进行排序的过程。排名可以根据多种因素进行，如在特定领域的专业性、在文本中的频率、在搜索引擎中的流行度等。以下是一些可能的要害词排名的示例： 1. 根据专业性排名：根据该领域的专业人士认为的重要性进行排名，例如在法律领域中将要害词“证据”排名靠前。 2. 根据频率排名：根据词语在文本中的出现频率进行排名，例如在一篇文章中多次提到

Public @ 2023-08-01 00:00:17

索引（indexing）

威海seo术语威海索引
2870

是蜘蛛程序存储互联网上每个词以及对应网页方位的进程，查找索引库是最首要的查找引擎数据库，而且没有哪个查找引擎不具备一个精心规划的索引库，有时也称为录入

Public @ 2012-01-10 15:26:23

相关性（relevance）

威海seo术语威海相关性
3598

相关性指的是事物之间的关联程度或相似程度。在信息检索中，相关性通常描述了查询与搜索结果之间的匹配程度或相关性程度。一般来说，相关性越高，搜索结果越符合查询的意图，而反之则越不相关。相关性的评估通常由算法和模型来实现，例如TF-IDF、BM25等算法。

Public @ 2023-06-15 15:00:08

相关性（relevance）

威海seo术语威海相关性
3488

的几个最佳的衡量标准？ 1. 精准度（Precision）：搜索结果中相关文档占搜索结果总样本量的比例，表示搜索系统找到的有效结果占全部结果量的比例。 2. 召回率（Recall）：搜索结果覆盖率，代表找到的相关文档占搜索样本总量的比例。 3. 覆盖率（Coverage）：搜索结果的评价指标，表示搜索结果中所包含的词或句子，占搜索引擎所拥有的整个语料库的比例。 4. 时效性（Timelin

Public @ 2023-02-24 16:48:28

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[ DB ] CONNECT:[ UseTime:0.026044s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_config` [ RunTime:0.017340s ]
[ SQL ] SELECT * FROM `ob_config` [ RunTime:0.015976s ]
[ 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:0.016859s ]
[ SQL ] SELECT `id`,`name`,`addon_list` FROM `ob_hook` [ RunTime:0.015784s ]
[ 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:0.017065s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 8957 LIMIT 1 [ RunTime:0.015964s ]
[ 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:0.016126s ]
[ 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:0.016432s ]
[ 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:0.016916s ]
[ 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` = 8957 LIMIT 1 [ RunTime:0.015986s ]
[ 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=8957 [ RunTime:0.019137s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海seo术语' AND `status` <> -1 LIMIT 1 [ RunTime:0.022483s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9541, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海seo术语' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.033752s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9541, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海相关性' AND `status` <> -1 LIMIT 1 [ RunTime:0.023154s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9541, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海相关性' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.037839s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9541, 'extra' => 'Using where; Using temporary; Using filesort', ) ]

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