Library / First Principles Framework (FPF) - Core Conceptual Specification
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A.1.RI:1 - Problem frame

Use this pattern when the next calculation or action depends on whether observations concern the same continuing object, and the available identification does not yet settle that question. A moving object appears again after an observation gap. Two tracks compete for one detection. A process number appears in reports made before and after a restart.

The subject practice supplies what counts as continuation of that object: permitted motion, a process lifetime, a material continuity rule or another applicable criterion. The Method constructs and compares the connections that the observations and those rules allow.

First useful move. Name the object whose continuation matters and the use that depends on it. Then examine one available observation for a feature that distinguishes continuation from a live competing account. For a process run, a changed start time can settle a question that an unchanged process number leaves open.

The result is an identification or exclusion supported by the available premises, or the remaining alternatives relevant to the next use. It can be conditional on a stated motion or observation account. An adequate existing identification can be used directly.

This Method assumes that the object-continuation criterion and the relevant subject rules can be recovered. Constructing a new criterion, motion theory, sensor model or tracking algorithm is further work when one of those contributions is missing. A question about an aggregate quantity may be answerable without deciding which observation belongs to which object.