面向中文学术文本的单文档关键短语抽取 *

夏天

Extracting Key-phrases from Chinese Scholarly Papers

Xia Tian

表1 数据集中关键短语的统计信息

Table 1 Key Phrase Statistics in the Dataset

构词数量 平均字符长度 出现次数 占比 累计占比 1 3.34 20 303 28.07% 28.07% 2 4.33 39 028 53.95% 82.02% 3 5.95 10 005 13.83% 95.85% 4 7.46 2 142 2.96% 98.81% 5 9.48 476 0.66% 99.47% 6 10.55 218 0.30% 99.77% 7 12.65 79 0.11% 99.88% 8 15.59 37 0.05% 99.93% 9 17.07 14 0.02% 99.95% 10 16.18 22 0.03% 99.98% 其他 - 13 0.02% 100.00%