Unfortunately, if the trading rules are over-optimized they often fail to work on future data.

A typical approach would be to model price history to determine successful trading rules.

Those agreements, too, are now subject to challenge under international trading rules.

The Fed also wants better and more uniform international trading rules.

They then trade chips with other players under a special set of trading rules.

But the trading rules and practices of our exchange have basically remained the same for the last 100 years.

As a result, he noted, the exchange has taken steps to beef up enforcement of trading rules.

This factor focuses on the relationship between price determination and trading rules.

He said global trading rules prohibit using one trade case to influence another.

Officials in other nations charge that even when it comes to business disputes, America is abandoning international trading rules.