Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

implementation of risk managed momentum strategy
The paragraph before on page 115 states: Scaling corresponds to having a weight in the long and   short legs that is different from one and varies over time,   but the strategy is still self-financing. Meaning that the long and short positions are no longer equal due to weighting one side more highly than the other. The weighting of one side (either long or short) is the number between 0.2 and 2 that you mention.