Concept

Inverse Kinematics

Optimizing for outcomes

Forward kinematics shows where momentum leads. Inverse kinematics works backwards from desired outcomes to find optimal parameters. This enables systematic backtesting and strategy optimization using kinematic principles.


The Inverse Problem


While forward kinematics answers "where will we go?", inverse kinematics solves the opposite problem: "how do we get there?" Given a desired outcome, we work backwards to find the optimal parameters.


From Robotics to Trading


In robotics, inverse kinematics calculates the joint angles needed to position a robot arm at a specific location. In trading, we calculate the optimal strategy parameters needed to achieve target performance metrics.


The Optimization Process


1. **Define Target**: Set desired outcomes (Sharpe ratio, max drawdown, win rate)

2. **Parameter Space**: Identify adjustable parameters (lookback periods, thresholds, weights)

3. **Solve Inverse**: Use optimization algorithms to find parameter values

4. **Validate**: Test the solution on out-of-sample data


Algorithms We Use


Jacobian-Based Methods


Calculate the sensitivity of outcomes to parameter changes:


  • Fast convergence for smooth objective functions
  • Handles multiple constraints simultaneously
  • Provides gradient information for optimization

  • Evolutionary Approaches


    Use genetic algorithms for complex parameter spaces:


  • Robust to local minima
  • Handles discrete and continuous parameters
  • Naturally incorporates multiple objectives

  • Practical Applications


    Strategy Backtesting


    Instead of trying random parameters, we:


    1. Define performance targets

    2. Let inverse kinematics find optimal settings

    3. Validate on multiple time periods

    4. Deploy with confidence intervals


    Risk Management


    Optimize position sizing and stop-loss levels:


  • Target specific risk/reward ratios
  • Minimize drawdown while maximizing returns
  • Adapt to changing market conditions

  • Portfolio Construction


    Find optimal asset weights:


  • Balance risk and return objectives
  • Incorporate correlation constraints
  • Maintain diversification requirements

  • The Visualization


    The interactive optimizer shows:


  • **Robot Arm**: Represents the strategy parameters
  • **Target**: Desired performance outcome
  • **Optimization Path**: How parameters adjust to reach the target
  • **Convergence Graph**: Error reduction over iterations

  • Why It Matters


    Inverse kinematics transforms strategy development from:


  • **Trial and error** → **Systematic optimization**
  • **Gut feeling** → **Mathematical precision**
  • **Static parameters** → **Adaptive systems**
  • **Single objectives** → **Multi-objective optimization**

  • This approach leads to more robust, consistent, and profitable trading strategies.


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    Interactive visualization - Inverse Kinematics