基于索引路径的深度网页数据抽取改良

介绍了基于索引路径的数据抽取算法的不足，从代码角度和用户需求角度2个方面进行考虑，提出了一种进改良措施，有效地提升了数据抽取的准确率，从而大大减少了数据冗余．由于补充了记录、有效数据等定义，使得抽取出的数据仍然保有其在网页中的结构关系，为之后的语义标注工作带来了极大的方便，为深度网页（Deep Web）数据集成奠定了良好的基础．

Improvement of Data Extraction Based on Index Path

In our report, the shortcoming of Data Extraction Based on Index Path （DEIP） algorithm were discussed, and based on HTML code and user needs, an improvement method were proposed to elevate the preci- sion ratio of Deep Web data extraction, which reduced data redundancy. Because the record and effective data were added, the data extracted by the new algorithm could still keep their structure just like that in Interact pages, which make the semantic annotation much easier to be processed, and lay a good foundation for data integration of Deep Web.