Sphinx中文分词应用

2009-02-09 00:00:00 来源: 互联网

Sphinx中文指南(二)——Sphinx中文分词coreseek篇

 

 

阅读本文前,请先查看前篇——Sphinx中文入门指南

目前,实现Sphinx中文的分词的方法据我所知有3种:

1、Coreseek

2、Sphinx-for-chinese

3、在客户端先分词,然后使用Sphinx字索引(查看安装原文)直接对输入词进行检索

Coreseek安装

在上篇中我们介绍了安装Sphinx的一些必要条件,在此不一一而论。本文基础基于上篇!

下载Coreseek:

[root@localhost ~]#cd /usr/local/src
[root@localhost src]# wget http://www.coreseek.cn/uploads/csft/3.1/Source/csft-3.1.tar.gz  ####coreseek源文件
[root@localhost src]# wget http://www.coreseek.cn/uploads/csft/3.1/Source/mmseg-3.1.tar.gz  #####coreseek所使用的词典
[root@localhost src]#tar zxvf csft-3.1.tar.gz
[root@localhost src]#tar zxvf mmseg-3.1.tar.gz

#####在安装coreseek前必须先安装mmseg
[root@localhost src]# cd mmseg-3.1
[root@localhost mmseg-3.1]# ./configure –prefix=/usr/local/mmseg
[root@localhost mmseg-3.1]# make && make install

######## 安装coreseek ########
##这里不使用python数据源,若需要,请加上 –with-python,在mmseg上一定要对应路径

[root@localhost csft-3.1]# ./configure –prefix=/usr/local/coreseek –with-mmseg-includes=/usr/local/mmseg/include/mmseg \
                                –with-mmseg-libs=/usr/local/mmseg/lib  –without-iconv
[root@localhost csft-3.1]# make && make install

若无问题,安装完毕后在/usr/local/下生成 coreseek目录及其下文件。

接下来要生成 mmseg词库及配置文件:

[root@localhost csft-3.1]#cd /usr/loca/mmseg
[root@localhost mmseg]# bin/mmseg -u /usr/local/src/mmseg-3.1/data/unigram.txt   ###unigram.txt是对应的词典文件,将会生成unigram.txt.uni
[root@localhost mmseg]# cd ../coreseek
[root@localhost coreseek]# mkdir dict ###创建字典目录
[root@localhost coreseek]# cp  /usr/local/src/mmseg-3.1/data/unigram.txt.uni dict/uni.lib    ###把创建的词典复制到dict
[root@localhost coreseek]# vim dict/mmseg.ini  ####创建mmseg的配置文件,此文件在coreseek的windows版本已自带!

mmseg.ini:
[mmseg]
merge_number_and_ascii=1;
number_and_ascii_joint=-;
compress_space=0;
seperate_number_ascii=1;
至此,mmseg配置完毕!下一步配置csft.conf——coreseek的配置文件

我的配置实例:
source article_src
{
        type                                    = mysql
        sql_host                                = 192.168.1.10
        sql_user                                = root
        sql_pass                                = pwd
        sql_db                                  = test
        sql_port                                = 3306  # optional, default is 3306

        sql_query_pre                           = SET NAMES utf8
        #sql_query_pre                           = SET SESSION query_cache_type=OFF ##这个可以关闭sql查询缓存
 sql_query = SELECT id,title,cat_id,member_id,content,created FROM sphinx_article

 sql_attr_uint  = cat_id
 sql_attr_uint  = member_id
 sql_attr_timestamp = created
sql_query_info = select * from sphinx_article where id=$id

}

index article
{
        source                                  = article_src
        path                                    = /usr/local/coreseek/var/data/article
        docinfo                                 = extern
        charset_type                         = zh_cn.utf-8  ###指定coreseek的编码
        charset_dictpath                    = /usr/local/coreseek/dict  #####coreseek字典文件

        min_prefix_len                        = 0
        min_infix_len                          = 0
        min_word_len                         = 2
        ngram_len               = 1
        ngram_chars = U+4E00..U+9FBF, U+3400..U+4DBF, U+20000..U+2A6DF, U+F900..U+FAFF,\
        U+2F800..U+2FA1F, U+2E80..U+2EFF, U+2F00..U+2FDF, U+3100..U+312F, U+31A0..U+31BF,\
        U+3040..U+309F, U+30A0..U+30FF, U+31F0..U+31FF, U+AC00..U+D7AF, U+1100..U+11FF,\
        U+3130..U+318F, U+A000..U+A48F, U+A490..U+A4CF
        html_strip              = 0
}

indexer
{
 mem_limit   = 256M
}
searchd
{
 # address    = 0.0.0.0
 log     =  /usr/local/coreseek/var/log/searchd.log
 query_log   =  /usr/local/coreseek/var/log/query.log
 read_timeout  = 5
 max_children  = 30
 pid_file   =  /usr/local/coreseek/var/log/searchd.pid
 max_matches   = 1000
 seamless_rotate  = 1
}
 

建立索引:
  [root@localhost coreseek]# bin/indexer article
Coreseek Full Text Server 3.1
 Copyright (c) 2006-2008 coreseek.com
using config file ‘./csft.conf’…
indexing index ‘article’…
collected 1000 docs, 0.0 MB
sorted 0.0 Mhits, 100.0% done
total 1000 docs, 21460 bytes
total 3.244 sec, 6614.99 bytes/sec, 30.82 docs/sec
total 2 reads, 0.0 sec, 26.8 kb/read avg, 0.4 msec/read avg
total 5 writes, 0.0 sec, 11.0 kb/write avg, 0.1 msec/write avg
[root@localhost coreseek]#

使用CLI端测试一下:

[root@localhost coreseek]# bin/search -c csft.conf -i article 建筑材料租赁
Coreseek Full Text Server 3.1
 Copyright (c) 2006-2008 coreseek.com
using config file ‘csft.conf’…
index ‘article’: query ‘建筑材料租赁 ‘: returned 1 matches of 1 total in 0.035 sec

displaying matches:
1. document=14, weight=3
        id=14
        title=???????????????
        cat_id=1
        member_id=2
        content=??????????????????????????????????????????????????????????
        created=1264244709
words:
1. ‘建筑’: 3 documents, 3 hits
2. ‘材料’: 4 documents, 4 hits
3. ‘租赁’: 2 documents, 2 hits
[root@localhost coreseek]#

可见,中文分词成功执行!并能从sql中查询出结果!

Sphinx中文分词coreseek篇完毕!下一篇:Sphinx中文分词Sphinx-for-chinese
2010年1月24日最后修改