Momentum Dual Moving Window TSI Indicator

I. Strategy Overview

This strategy is named the Momentum Dual Moving Window TSI Indicator Strategy. The core idea of this strategy is to use dual EMA sliding windows to smooth price fluctuations, and then combine the directional changes of the trend to construct a momentum indicator that reflects the buying and selling power in the market, namely the TSI indicator, and use it as a trading signal to make buy and sell decisions.

II. Strategy Principle

This strategy uses dual sliding window double exponential moving averages to calculate price changes. The outer window period is longer and the inner window period is shorter. By double smoothing, part of the randomness in the price data is removed.

First calculate the unit change in price:

pc = change(price)

Then use dual sliding windows to double smooth the price changes:

double_smoothed_pc = double_smooth(pc, long, short)

Then calculate the absolute value of the price change, which is also double smoothed using dual sliding windows:

double_smoothed_abs_pc = double_smooth(abs(pc), long, short)

Finally, use the smoothed price change divided by the smoothed absolute price change to get the TSI indicator that reflects the buying and selling power:

tsi_value = 100 * (double_smoothed_pc / double_smoothed_abs_pc)

By setting different lengths of long and short window periods, market noise in the short term can be filtered out to some extent, so that the TSI indicator can better reflect the buying and selling power in medium and long term trends. When the TSI indicator crosses above its moving average, a buy signal is generated; When the TSI indicator falls below its moving average, a sell signal is generated.

III. Strategy Advantages

1. Using dual sliding windows effectively filters out short-term market noise for more accurate indicator reactions
2. The price change is also double smoothed, making the TSI indicator more stable and reliable
3. The ratio of price change to absolute price change is used, which is automatically standardized and more comparable
4. Comprehensively consider the direction and magnitude of price changes as a quality indicator for trading decisions
5. Setting different parameters allows flexible adjustment of indicator sensitivity

IV. Strategy Risks

1. The TSI indicator may give wrong signals when the market has long-term fluctuations
2. Improper parameter settings can also affect the quality of indicators and signals
3. Although there are dual sliding windows, the indicator still has some sensitivity to short-term market noise
4. When the difference between long and short window periods is too large, indicators and signals may lag

It can be optimized by adjusting window period parameters and appropriately shortening signal moving average length. When the market fluctuates, trading can be temporarily stopped to control risks.

V. Optimization Directions

1. Test combinations of different long and short window period parameters to find optimal parameters
2. Try other types of moving averages, such as Linear Weighted Moving Average
3. Increase the smoothness of indicators by building triple or multiple sliding windows
4. Combine other auxiliary indicators to optimize buy/sell point selection
5. Set stop loss strategies to strictly control single loss

VI. Summary

This strategy calculates the TSI momentum indicator reflecting buying and selling power based on the double smoothing of price changes. The dual sliding windows filter out noise. The double smoothing of price change variations also makes the indicator more stable and reliable. The standardized ratio makes it comparable. The indicator combines the direction and magnitude of price changes as a high quality signal source. Through parameter adjustment, indicator sensitivity can be freely controlled. With parameter optimization and risk control in place, it is a very practical quantitative trading strategy choice.