The Bank of Japan will raise interest rates again by year-end, according to more than half the economists in a Reuters poll published on Wednesday, with those who had a view on which month leaning towards a December increase. The findings reflect analysts' conviction the BOJ is undeterred from gradually retreating from decades of huge monetary stimulus even as its global peers, including the U.S. Federal Reserve, tilt toward interest rate cuts. In the August 13-19 poll, 57% of economists, or 31 of 54, said the BOJ would raise borrowing costs again by the end of the year.