An interesting column from reuters.
http://jp.reuters.com/article/jp_forum/idJPTYE98A06Z20130911
The writer is one of the most famous Japanese economists, I think. He was once said to be a leading candidate for a member of the policy board in Bank of Japan. I don't fully understand the ground he stands, but it will be a good reference for inflation target and monetary policies.
Quoted from the column:
0.3% decline in the long term interest rate will lead to 0.3% improvement of supply-demand gap at a maximum. 1% improvement in the gap will increase 0.25% of inflation rate.
10% rise in stock price will contribute to 0.12% of the gap improvement. (thus, 1% rise of inflation rate will require over 300% of stock price increase.)