UlcerIndex(R, ...)
DETAILS: This approach is sensitive to the frequency of the time periods involved and penalizes managers that take time to recover to previous highs.
REFERENCES: Martin, P. and McCann, B. (1989) The investor's Guide to Fidelity Funds: Winning Strategies for Mutual Fund Investors. John Wiley & Sons, Inc. Peter Martin's web page on UI: http://www.tangotools.com/ui/ui.htm
## Test against spreadsheet at: http://www.tangotools.com/ui/UlcerIndex.xls