Policy Evolution of Government Procurement of Public Services in China: A Text-Mining Perspective

Table 2

The TF-IDF value of words in policies from 1995 to 2003.

Keywords	Purchase	Supplier	Bidding	Cargo	Projects	Agent	Institution	Tender	Engineering	Supervise
TF-IDF value	0.623	0.542	0.512	0.506	0.432	0.421	0.412	0.322	0.309	0.271