Step six, construct core relationship within technical requirements. This area shows the core relationships between the technical requirements. A positive correlation ship indicates that both technical requirements can be improved at the same time. A negative correlation ship indicates that improving one of the technical requirements will worsen the other. Step seven. derive the importance of the technical requirements, that is column dates.

This is the last step in the process for one of the houses. The column weights indicate the importance of the technical requirements in meeting the customer requirements. The value in the column weights row is obtained by multiplying the value in the importance column in the customer requirements section, by values assigned in the relationship matrix.