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DF-competition-sogou

大数据精准营销中搜狗用户画像挖掘

我们将对数据训练集和测试集进行中文语义分析,特征值提取,分类模型拟合和预测等步骤操作。 数据库:user_tag_query.2W.TEST user_tag_query.2W.TRAIN 具体处理流程:

  1. 文本预处理
  2. 特征提取
  3. 训练分类器
  4. 模型预测

结果:

去除停用词之前:

正常结果bigram+truecut 0.66117

使用unigram+truecut 0.6509

使用bigram+searchcut 0.6633

使用unigram+searchcut 0.6566

使用bigram+falsecut 0.66546

使用unigram+falsecut 0.65675

在去除停止词之后:

正常结果bigram+truecut 0.6625

uni_truecut 0.64879

bigram+falsecut 0.66625

uni_cutfalse 0.65158

bi_searchcut 0.66596

uni_searchcut 0.65308

libsvm:

c = 0.5,预测值一样。放弃

c = 1 预测值的四分之三是一致的,所以放弃

c = 4:0.62913 预测值少了一些少数类,多数类比重加大。

c = 10:0.65254

c = 20 0.64746 心好累

c = 30 age预测值都是一,放弃。

c = 50:age预测值都是一,放弃。

bigram:c = 1 :大约需要两个半小时,放弃。

after corpus:

c = 20:edu全都是5,舍弃

c = 30:age全都是1,舍弃

我们提交14次。

最高分 0.70162 提交次数 60次。

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