word2vec配置到使用

（1）首先下载word2vec，地址：https://code.google.com/p/word2vec/，可能下载的时候有问题，google上不去，那么可以从csdn上面下载。

解压后目录如下：

 

w2v/
`-- trunk
    |-- LICENSE
    |-- README.txt
    |-- compute-accuracy.c
    |-- demo-analogy.sh
    |-- demo-classes.sh
    |-- demo-phrase-accuracy.sh
    |-- demo-phrases.sh
    |-- demo-train-big-model-v1.sh
    |-- demo-word-accuracy.sh
    |-- demo-word.sh
    |-- distance.c
    |-- makefile
    |-- questions-phrases.txt
    |-- questions-words.txt
    |-- word-analogy.c
    |-- word2phrase.c
    `-- word2vec.c

（2） 进入w2c/trunk文件夹，运行make，编辑文件。从makefile中可以看到，需要编译的文件，主要有两个word2vec.c和distance.c，编译后生成word2vec和distance。但是在编译的时候可能出现问题，参照http://blog.csdn.net/zshunmiao/article/details/15339105，可以对问题进行解决。

makefile内容如下：

（3）然后就可以跑个demo了，运行./demo-word.sh。

demo-word.sh内代码如下：

CC = gcc
#Using -Ofast instead of -O3 might result in faster code, but is supported only by newer GCC versions
CFLAGS = -lm -pthread -O3 -march=native -Wall -funroll-loops -Wno-unused-result

all: word2vec word2phrase distance word-analogy compute-accuracy

word2vec : word2vec.c
        $(CC) word2vec.c -o word2vec $(CFLAGS)
word2phrase : word2phrase.c
        $(CC) word2phrase.c -o word2phrase $(CFLAGS)
distance : distance.c
        $(CC) distance.c -o distance $(CFLAGS)
word-analogy : word-analogy.c
        $(CC) word-analogy.c -o word-analogy $(CFLAGS)
compute-accuracy : compute-accuracy.c
        $(CC) compute-accuracy.c -o compute-accuracy $(CFLAGS)
        chmod +x *.sh

clean:
        rm -rf word2vec word2phrase distance word-analogy compute-accuracy

然后输入单词，就可以计算其近义词，并按照顺序排列。

Enter word or sentence (EXIT to break): china       

Word: china  Position in vocabulary: 

                                              Word       Cosine distance
------------------------------------------------------------------------
                                             japan              0.648631
                                            taiwan              0.630534
                                         manchuria              0.599535
                                             tibet              0.583566
                                               prc              0.560898
                                          kalmykia              0.558937
                                            xiamen              0.556037
                                             jiang              0.553501
                                           chinese              0.547065
                                              liao              0.543676
                                             india              0.536273
                                             korea              0.534758
                                               roc              0.530741
                                          thailand              0.529334
                                             hunan              0.527629
                                             liang              0.527374
                                          shanghai              0.526314
                                         chongqing              0.525559
                                           nanjing              0.521342
                                            yunnan              0.518669
                                             wuhan              0.516914
                                              zhao              0.513246
                                          xinjiang              0.509939
                                              tuva              0.507322
                                         guangdong              0.507288
                                             hubei              0.505540
                                           guangxi              0.501068
                                            taipei              0.497673
                                             macao              0.497303
                                            hainan              0.494808
                                          shandong              0.493323
                                          shenzhen              0.491871
                                          hangzhou              0.489323
                                            balhae              0.488846
                                         guangzhou              0.486907
                                            fujian              0.485473
                                          zhejiang              0.485011
                                            harbin              0.483171