mql5/Indicators/MyIndicators/Quant/Entropy_Pro.md

Entropy Pro (Indicator)

1. Summary

Entropy Pro is a cutting-edge quantitative indicator based on Information Theory. It measures the Regularity and Predictability of price action.

While volatility indicators (like ATR) measure how much the price moves, Entropy measures how chaotically it moves. It answers the question: "Is the market structure organized (Trend/Cycle) or random (Noise)?"

2. Methodology & Logic

The indicator uses the Sample Entropy (SampEn) algorithm, which is robust even for shorter time series typical in trading.

• Logic: It counts how often specific price patterns (of length m) repeat themselves within a tolerance (r).
• High Entropy: Low repetition. The market is full of surprises. Pure Noise.
• Low Entropy: High repetition. The market structure is rigid and predictable. This usually happens during strong Trends or tightly controlled Ranges (Accumulation).

3. Visualization & Interpretation

The indicator uses a Colored Histogram to signal market states.

• Green Bars (Low Entropy < 1.0): Organized State. The market is "locked in".
  • If associated with a directional move, it confirms a Reliable Trend.
  • If associated with a flat market, it signals Consolidation (pre-breakout tension).
• Gray Bars (High Entropy > 1.5): Chaotic State. The market is disorderly. Price action is efficient (random walk) and hard to predict. Technical signals are unreliable here.

4. Parameters

• InpPeriod: The rolling window size for analysis (Default: 50).
  • Shorter (30): More reactive for scalping.
  • Longer (100): Better for regime detection on H1/H4 timeframes.
• InpDim: Pattern length to match (Default: 2). Standard for SampEn.
• InpTol: Tolerance coefficient (Default: 0.2). Determines how strict the pattern matching is relative to standard deviation.

5. Strategic Usage

1. Trend Confirmation: A strong trend should ideally have Decreasing Entropy. If the price is rising but Entropy is skyrocketing (Gray bars spiking), the trend is unstable and "nervous" (prone to crash).
2. Breakout Validation: Breakouts often occur from zones of Low Entropy. A breakout accompanied by Low Entropy (Green bars) is statistically more likely to sustain.
3. Hurst Combination: Entropy and Hurst are natural partners.
   • Low Entropy + High Hurst: The "Golden Zone" for trend following.
   • High Entropy + Hurst ~ 0.5: Random Walk (Stay Out).