Countable decision trees for entry and abstention

A branching map with one conclusion per path

A decision tree starts at one observation node and applies a pair of if-then tests at each step, sending the case down one branch until the path ends in a conclusion. Each completed path is a self-contained logic statement that joins ordered conditions to a single terminal conclusion.

The construction answers the case from a knowledge base already stored as data statements and if-then rules, rather than by running a mathematical algorithm at decision time.

Interview cutoffs or enumerate frequency paths

The pre-trade checklist is one ordered procedure that turns rule inputs, market state, and execution constraints into a buy, sell, or stand-aside action. One construction sequence has a knowledge engineer interview a practitioner for the first market variable, the cutoff applied to it, and each later variable until every branch ends in a decision to trade or to stand aside. The knowledge engineer writes that stated sequence of cutoffs into an explicit program.

A frequency-based construction discretizes interest-rate, unemployment, dollar, and market-direction states, then estimates the historical share of down, sideways, and up outcomes for each full combination. Each full combination is a frequency path. With three three-state inputs and three direction outcomes, the enumeration yields 81 distinct logic paths.

A sample-size gate before a path is a rule

After path frequencies are tabulated, the builder still sets a minimum instance count for admitting a path as a rule and may apply a statistical significance test to that choice. That minimum instance count is the sample-size gate.

Once encoded, each logic path always terminates at the same conclusion, so the tree does not invent relationships that were never written into the procedure.

When the encoded rules stay largely static

The design is presented as most suitable when the trading procedure is explicit and the rules are expected to stay largely static after construction.