2015issue C076
Construct if-then rules, then backtest and optimize
A constructed trading procedure is offered as a way to separate decisions that feel logical from decisions that are actually emotional. Construction needs relevant data, if-then rules, a backtest, and optimization in one workflow, not an entry idea alone.
- Construction is more than writing an entry idea. It requires relevant data, a backtest, and optimization before the procedure is treated as complete.
- A simple system idea can stay simple if the needed data is assembled first and then turned into logical if-then statements.
- After the coded rules run, construction continues by checking whether results look realistic and by reducing data redundancies and anomalies.
- Completing that path can take a period measured in months and is framed as a move from emotion-driven choices toward rule-driven ones.
Construction is more than an entry idea
A constructed trading procedure is offered as a way to separate decisions that feel logical from decisions that are actually emotional.
Construction is described as requiring both backtesting and optimization, not only writing an entry idea. Relevant data is treated as a required construction input alongside any standard for acceptable results.
Assemble relevant data, then write if-then rules
A system idea may stay simple if it is turned into logical if-then statements after the needed data is assembled. Relevant data means market inputs chosen so rules can be tested without obvious redundancy or anomaly distortion.
Those conditional statements are the checklist process: the pre-trade if-then sequence that decides whether to enter, exit, or stand aside. Coding those conditional statements is framed as a solvable construction step once the if-then logic exists.
Backtest and optimize until the rules are one process
The result is a mechanical trading system: a coded set of entry, exit, and abstention rules run as one testable procedure. A backtest, in this usage, is running the finished rule set on historical inputs to inspect whether the whole procedure behaves as intended.
After the program runs, construction continues by checking whether results are realistic and by reducing data redundancies and anomalies. System optimization is the post-test adjustment of rule inputs and data handling until the procedure stays realistic and logically consistent.
The procedure is adjusted until the rules make logical sense as one process rather than a collection of hopeful tweaks.
The path takes time because the aim is rule-driven choice
Completing that construction path can take a period measured in months and is framed as moving from emotion-driven choices toward rule-driven ones.
All readings on this track · 23 readings
- 1984Evaluating mechanical systems beyond net profit
- 1987Mechanical systems need more than pretty charts
- 1987Evaluating silver moving averages and RSI by scoring rule
- 1988Simple systems over optimized complexity
- 1988Cycle rule inputs until the parameter search stops
- 1990Split-sample tests for stochastic parameter grids
- 1993Four-subsystem trading system construction
- 1993Randomized price paths for stock system parameters
- 1994Mechanical timing with out-of-sample and filter checks
- 1995Evaluating asymmetric percent-reversal trading rules
- 1996Evaluating a daily volume-strength and new-high new-low timing procedure
- 1997Rule-based intraday system design with genetic search
- 1997Evolving three-rule systems with genetic templates
- 1997Audit the holdout and the exposure before the fitted entries
- 2001Inner weights are part of the candlestick signal
- 2003Mechanical short-term rules for news-sensitive rallies
- 2004Band construction as a testable trading procedure
- 2006Layered day-session automation from brackets to rules
- 2006Why mechanical rules must be retuned per security
- 2006A linear-regression next-bar forecast needs a searchable cutoff
- 2015Construct if-then rules, then backtest and optimize
- 2015Mechanical system design as a critique of discretion
- 2025Joint channel design with a trend filter and stop-loss orders