fedora 18 release party
TRANSCRIPT
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Peng WuPresented by
Red Hat
License statement goes here. See https://fedoraproject.org/wiki/Licensing#Content_Licenses for acceptable licenses.
fontconfig & libpinyin 简介
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今日主题1. fontconfig 简介2. libpinyin 简介3. libpinyin 解密
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fontconfig 简介
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Gtk+PangoCairoFontconfigFreetype
字体渲染组件
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根据查询条件选择最好的字体fc-match
根据查询条件列出匹配的字体fc-list
Fontconfig 目标
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为每一种语言提供一个默认字体参考
http://tagoh.fedorapeople.org/fonts/f18-defaultfonts.html
绝大部分字体都使用统一的 fontconfig 配置格式http://fedoraproject.org/wiki/Packaging:FontsPolicy
示例/usr/share/fontconfig/templates/
Fedora 上的 fontconfig 配置
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fonts-tweak-tool
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libpinyin 简介
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主页 : https://github.com/libpinyin包含 libpinyin 和 ibus-libpinyin 两个子项目
下载镜像 : http://sourceforge.net/projects/libpinyin/简介 : Library to deal with pinyin
libpinyin 项目信息
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libpinyin基于 n-gram 自然语言处理模型的输入法后端
已经进入 Fedora 18 中
仍然在改进当中 ;)
libpinyin 的前端ibus-libpinyin
fcitx-libpinyin
libpinyin 简介
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记录所有的拼音 / 句子到 2TB 关系数据库中 .优点
接近 100% 的正确率
缺点没有那么大的硬盘
也没有那么强悍的 CPU
使用自然语言处理的技术来达到正确率和资源使用量的折中
假想的拼音输入法
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libpinyin 解密
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Uni-gram:scim-pinyin
N-gram:libpinyin
开源输入法数学模型
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例子 : zhong'guo'renP( 中国人 |zhong'guo'ren) = P( 中国人 ) = P( 中国 )*P( 人 )= 0.001 * 0.001= 1e-6
scim-pinyin 模型示例
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P( 种果人 |zhong'guo'ren) = P( 种果人 )= P( 种果 )*P( 人 )= 0.0001 * 0.001= 1e-7< 1e-6 = P( 中国人 |zhong'guo'ren) 所以最终结果为中国人 .
scim-pinyin 模型示例 ( 继续 )
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例子 : zhong'guo'ren
P( 中国人 |zhong'guo'ren) = P( 中国人 ) *P(zhong'guo'ren| 中国人 )= P( 中国 )*P( 人 | 中国 )*P(zhong'guo| 中国 )*P(ren| 人 )= 0.01 * 0.1 * 0.7 * 0.5= 3.5*10^-4
libpinyin 模型示例
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P( 种果人 |zhong'guo'ren) = P( 种果人 )*P(zhong'guo'ren| 种果人 ) = P( 种果 )*P( 人 | 种果 )*P(zhong'guo| 种果 )*P(ren| 人 )= 0.01 * 0.01 * 0.8 * 0.5= 4.0*10^-5< 3.5*10^-4 = P( 中国人 |zhong'guo'ren)
所以最终结果为中国人 .
libpinyin 模型示例 ( 继续 )
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允许用户导入第三方词库更多 ...
libpinyin on Fedora 19 开发计划
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请使用 fonts-tweak-tool 来定制自己的桌面字体将会在 Fedora 19 继续改进 libpinyin, 提供更好的输入体验
总结
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Demo
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问题 ?
License statement goes here. See https://fedoraproject.org/wiki/Licensing#Content_Licenses for acceptable licenses.
pwu at fedoraproject dot orgContact: