Proposal of new software size estimation and process control methods

In ordinary case, software size estimation will be done after design ptocess. The use case point is proposed in order to estimate effort before design process, and its effectiveness has been reported. But in real development process, estimation in upper requirement level is requested. We propose two estimation methods by using informal requirement documents:1)the number of statement, 2)the use case point count based on the figure in requirement document. We investigated the effectiveness of these estimations based on the real development data. and showed the possibility of estimation for the information type embedded software domain.