Bond Yield Measurement
Definitions
§Yield to Maturity
A measure of the average rate of return on a bond if held to maturity.  To compute it, we define the length of a period as 6 months, and then calculate the internal rate of return per period.  Finally, we double the six-monthly IRR to get the bond equivalent yield, or yield to maturity.
§Effective Annual Yield
Take the six-monthly IRR and annualize it by compounding.