A new arXiv preprint tackles the problem of trajectory extrapolation, where the goal is to predict the continuation of a path from only a partial observation. The authors note that this task is fundamentally underdetermined: many continuations are possible from the same partial trajectory.
The paper proposes a method called target-constrained pooling (TCP). The key idea is that other, already completed trajectories that are related to the target can supply useful information about how the unresolved portion might continue. The abstract introduces TCP as a way to separate something, but the available text ends mid-sentence, so the exact separation mechanism is not described in the source.
Because only the abstract was available, the article cannot detail the method's implementation or results. The contribution, as stated, is the conceptual framing: using related completed trajectories to constrain an otherwise underdetermined extrapolation problem.