语义搜索引擎Evri
Jun 27, 2008 数字生活
语义搜索引擎Evri 即将发布,着实有点让人期待,由Paul Allen 直接参与投资,内部定义为内容组织引擎,其实质为搜索引擎,但在结果上添加了一个复杂的语义层以强调不同搜索内容之间的关系,这也是我们是发现的比较新奇的地方.Evri 在初期只根据人们最关心的人和事物推出对有限的内容的搜索,这和 Mahalo 很相似,但不同的是,Mahalo 通过聘请编辑和义务人员手工编辑结果,而,Evri 则完全基于自己的算法自动对人物,产品,概念,事件等内容之间的关系进行挖掘。
值得我们关注的是,Evri 在内容分析中能够区分语法,如主语,谓语,宾语,在 D6 conference 的演示中,Roseman 把 Evri 比作一个由7年级语法学校学生组成的团队对 Web 进行勾画。
Evri 将直接和最近频频曝光的多个语义搜索引擎展开竞争,如 Powerset,Hakia。其中 Powerset 只对 Wikipedia 进行搜索,而Hakia 虽然对整个 Web 进行搜索,但更多是在结果中对内容进行组织。
用户现在可以在 Evri 的官方主页上提供自己的 Email 地址并获得 Beta 测试邀请,有兴趣的朋友可以来体验一下咯.
官方网站地址: http://www.evri.com
WordPress 2.6 Beta 1放出
Jun 25, 2008 WordPress
WordPress的更新速度实在是让人叹为观止,2.5版我还没来的及用,这不WordPress 2.6 Beta 1放出来了,更新的速度也快了,快的我自己都觉得有点不能接受了,看样子过段时间我可真得大幅度更新下我的BLOG版本了.
本次BETA版暂时未在官方首页直接发布,不过还是可以下载的到的,这里提供下载地址,有兴趣的可以试下:
http://wordpress.org/wordpress-2.6-beta1.zip
关于本次更新的一些功能上的说明,有两个最大的特点就是增加了Post Revisions功能和支持Google的Gears,我引用以下一篇国外的WP友的报道,这里就不翻译了,有点麻烦,图个省事,哈哈:
The two biggest new features are Post Revisions, which saves a history of edits made to each post, and support for Gears, which greatly speeds up working with the admin screens.
Other changes of note:
- Support for the XML-RPC and Atom client APIs is turned off by default now. If you use an external client for posting, you’ll need to specifically turn these features on, under
Settings/Writing. - Impoved support for SSL access to the admin screens.
- When you are selecting themes, you now get to view a preview of how your site looks with the new theme before commiting to the change.
- The return of the “Press This” bookmarklet (find it in the sidebar of the
Writepage). Drag the link to your browser’s bookmarks toolbar, and use it to quickly post about sites you visit. - More avatar options. The Gravatar service now supports displaying MonsterID, Wavatar, or Identicon icons in place of the default icon for those who don’t have a personalized Gravatar. These options are selectable under
Settings/Discussion. My Easy Gravatars plugin can support this as well, though I’ll probably update it to use the new built-in settings, rather than its own. I’ll write that up later. - Improved plugin management. Active and inactive plugins are now listed separately. You now have the abiliity to “bulk activate” or “bulk deactivate” plugins. You can also delete unused plugins at the click of a button. (Now all we need is the ability to search and install plugins from the Extend directory right from our admin! Maybe in 2.7?)
And there are other assorted improvements, such as updates to the latest jQuery and jQuery UI libraries, updates to the latest TinyMCE editor, improvements to Page and Category management, and as always, general performance enhancements.
Tags: WordPress2.6, WordPress下载, WordPress插件
MediaWiki的PHP4版本用户权限设置
Jun 24, 2008 技术文档
昨天心血来潮,下了个MediaWiki,因为之前没玩过WIKI之类的系统,熟不知MediaWiki现有的版本必须要求系统支持到PHP5环境,晕,我拿来测试的主机貌似是PHP4的,于是在搜索,找到了1.68版,也就是MediaWiki最后一版支持PHP4的版本,安装比较顺利,和普通的程式没什么区别.
装好后一想,现在网络里的WIKI群发机太多,一旦被扫描到自动注册发帖就麻烦了,得设置一下用户权限,这个就显的非常重要了,于是做了如下设置:
打开LocalSettings.php编辑加入如下内容(根据你自己的要求来加了):
阻止新用户注册
1.5.x-1.6.x
$wgGroupPermissions['*' ]['createaccount'] = false;
注意: 阻止新用户注册,此时管理员可以到特殊页面上的用户登录页面(Special:UserLogin)里,输入希望为其建立帐户的某人的用户名与电子邮件地址,然后点击通过eMail(by email)按钮递交,系统将创建帐号并将随机生成的密码发送到指定email里。
设置匿名用户权限
1.5.x-1.6.x
$wgGroupPermissions['*' ]['createaccount'] = false;
$wgGroupPermissions['*' ]['read'] = true;
$wgGroupPermissions['*' ]['edit'] = false;
设置匿名用户可读内容
1.5.x-1.6.x
$wgWhitelistRead = array( "Main Page", "Special:Userlogin" );
$wgGroupPermissions['*' ]['read'] = false;
注意:具体需要对应自己的站点链接,而对于多字节语言的MediaWiki,例如中文首页链接index.php?title=%E9%A6%96%E9%A1%B5,这首页中文字符PHP可能无法正确解码。需要利用urldecode()函数转换一下,写为:
$wgWhitelistRead = array( urldecode("%E9%A6%96%E9%A1%B5") ;
Tags: MediaWiki, MediaWiki PHP4, MediaWiki用户权限设置



