metasearch engine

Open source search engine Toolkit 1. Lucene Lucene is currently the most popular open-source full-text search engine toolkit. It is affiliated to the Apache Foundation and initiated by Doug Cutting, a senior full-text indexing/retrieval expert, take the name of the project as the name of his wife. Lucene is not a full-featured search application, but a toolkit focusing on text indexing and search. It can ad

Performance Comparison between MyISAM engine and InnoDB engine in MySQL table structure Create table 'myisam '('Id' int (11) not null auto_increment,'Name' varchar (100) default NULL,'Content' text,Primary key ('id ')) ENGINE = MyISAM default charset = gbk; Create table 'innodb '('Id' int (11) not null auto_increment,'Name' varchar (100) default NULL,'Content' t

Although the second generation search engine is better than the first generation in terms of search speed and the extension of multiple language information, it also makes some explorations in natural language as query language. However, with the strong development of the Internet, the contradiction between the huge digital information on the Internet and the ability of people to obtain the necessary information is increasingly prominent. A report pub

With the rapid development of the Internet, the increase of web information, users to find information in the ocean, like a needle in the haystack, search engine technology to solve the problem (it can provide users with information retrieval services). At present, search engine technology is becoming the object of research and development of computer industry and academia. 　 Search

rules, draw a conclusion. This conclusion may be a static result or a set of actions that need to be performed. The process of applying this rule is called reasoning. If the process of reasoning is handled by the program, then the program is called the Inference engine/inference machine. The inference engine adopts different control strategies depending on the knowledge representation, and common types inc

Document directory Horde3D OGRE3D Irrlicht jmonkey Catcake jPCT-AE min3d gamine Alien3D With the popularity of android in the world, more and more people are focusing on mobile devices equipped with android. However, due to the limitations of handheld devices, how can we use limited resources to achieve a good experience, this is an issue that must be considered by the device manufacturer. The dazzling interface is a way to increase user experience. Among them, the 3D effect is undoubtedly th

Developer online builder.com.cn Updated on:2008-02-18Author: heiyeluren Source: csdn Keywords: Test InnoDB Engine MyISAM Engine MySQL [Hardware configuration] CPU: amd2500 + (1.8 GB)Memory: 1 GB/modernHard Disk: 80 GB/ide [Software configuration]OS: Windows XP SP2SE: php5.2.1DB: mysql5.0.37Web: IIS6 [MySQL table structure] CreateTable 'Myisam '('Id'Int(11)NotNull Auto_inc

Search is an age-old requirement, and it is an important research field long before the internet is produced. It can be said that any provision of information to find services are search engines, the internet just magnified this demand. Now the trend of search technology is everywhere, the future of competition is not limited to the Internet, local, LAN, intranet and wireless network will be included. Before the advent of the Internet, the theory and technology of computer retrieval has been s

3D game engine design and implementation (7) Yesterday in debugging code, found that a large number of CPU resources, I do not know what the problem there, this can really start, is distressed, emergent found, why not frame rate to see how many frames shown. The next step is to add the frame rate up, in the debugging output, found only 2 to 5 frames per second, why so little. Where to go to find out why it's so slow. Only in the stupidest way, first l

Now to a client to do a private equity site, according to the requirements of customers can not use the CMS, had to write their own program. Want to separate the template and program, I look on the Internet only Smarty and Disucz use more. I have the following questions 1,discuz,smarty these two template engines, which is more useful. Because the procedure has a more complex judgment. Is it possible to use a template engine? 2, this should not be co

Part of the content is transferred from: http://blog.csdn.net/hguisu/article/details/8024799First, open source project1.Lucene full-text retrieval systemHttp://lucene.apache.org and http://www.lucene.com.cn/Lucene is a subproject of the Apache Software Foundation 4 Jakarta Project group, an open source full-Text Search engine toolkit, which is not a full-text search engine, but a full-text search

+---------------------------------------------------+| case where salary+---------------------------------------------------+| Low || Low || High || High || High || High |+---------------------------------------------------+6 rows in Set (0.00 sec)4.case [expr] when [value1] then [result] ... else [default] End Function:Mysql> Select Case salary when the "low" when the then ' mid ' else ' high ' End from salary;+----------------------------------------------------------------------+| Case salary

MySQL MyISAM engine and Heap engine speed performance test (1) [from heiyeluren blog] test environment CPU: Intel Pentium4 2.66 GHz Memory: 1 GB Disk: 73 GB/SCSI OS: FreeBSD 4.11 PHP: PHP 5.2.1 MySQL: MySQL 4.1.23b Preliminary work My. cnf Max_heap_table_size = 128 M Create a table Use test; ---- Store engine heap -- create table 'tbl _ heap '('id' int (11) not

Part 2nd: In-depth recommendation of engine-related algorithms-collaborative filteringThe first article in this series provides an overview of the recommendation engine, and the following articles provide an in-depth introduction to the recommended engine's algorithms and help readers implement them efficiently. In today's recommended technology and algorithms, the most widely recognized and adopted is base

Search engine technology and trends[From search engine Express]With the rapid development of the Internet and the increase of WEB information, users need to find information in the ocean of information, just like haystack, the search engine technology solves this problem (it can provide information retrieval services for users ). Currently, search

According to the perfect official statement, this time the Angelica engine was abandoned and the new-generation cube engine 3D engine was independently developed. The cube engine is specially tailored for 2.5D games to achieve a wide range of layered effects. The intelligent surface graphics system can generate infin

Efficient collaborative filtering recommendations based on Apache MahoutApache Mahout is an open-source project under the Apache Software Foundation (ASF) that provides a number of extensible machine learning domain Classic algorithms designed to help developers create smart applications more quickly and easily, and in Mahout Also added support for Apache Hadoop to enable these algorithms to run more efficiently in the cloud environment. For the installation and configuration of Apache Mahout, r

1, Elasticsearch (search engine) queryElasticsearch is a very powerful search engine that uses it to quickly query to the required data.Enquiry Category:Basic query: Query with Elasticsearch built-in query criteriaCombine queries: Combine multiple query criteria together for compound queriesFiltering: Querying at the same time, filtering data with the filter condition without affecting the score2, Elasticse

Sina launched its own cloud computing service platform, which is called App Engine like Google. According to NIST's definition of cloud computing, Google App Engine is a PAAs platform service.What services does it provide? What are the differences between Sina App Engine launched by Sina and Google? Background Cloud computing services, led by successful products

Tags: mysqlMySQL commonly used engines mainly have a few, Mrg_myisam, CSV, MYISAM, InnoDB, Memory, NDB, MYISAM, InnoDB is the most commonly used in MySQL storage engine, today mainly discusses InnoDB engine.First, what is the InnoDB engineThe InnoDB engine is another important storage engine for MySQL database, and is becoming the standard for all new releases of