Table 5. Interpretive scope of spatial and spatiotemporal indicator categories. |
| Local indicators |
Main indicators |
Primary
descriptive use |
Interpretive
boundary |
| Individual
actions and local spatial indicators |
Shot location,
spatial field-goal efficiency, shooter-to-basket distance, shot distance,
nearest- defender distance, and shot angle. |
Describe
the immediate spatial conditions of a shot, including its location, the
shooter’s distance to the basket, and the space available at the
moment of shooting. |
These indicators
describe the immediate shot condition, but not the full possession process
that produced it. Stronger tactical interpretation requires information
on the preceding pass, dribble, screen, or defensive rotation. |
| Interactional
indicators |
Dyadic
relative phase, attacker-defender interpersonal distance, passer-receiver
relations, secondary-assist indicators, and space-creation dynamics concatenations. |
Describe
player-player relations, including coordination, interpersonal spacing,
passing links, and offensive action sequences within possessions. |
These indicators
show how players were related in space and time, but they cannot determine
on their own whether the relation reflected planned execution, defensive
breakdown, or late-possession adaptation. |
| Collective
indicators |
Team spatial
center, stretch index, court-area occupation ratio, team area, team width,
team length, centroid movement, spatial phase clusters, and transition probabilities. |
Describe
team shape, spacing, expansion, contraction, court occupation, and transitions
between recurring spatial configurations. |
These indicators
characterize collective structure, but their tactical meaning depends on
possession phase, ball location, opponent organization, and sequence outcome. |
| Defensive-
impact indicators |
Defensive
shot frequency effect, defensive shot efficiency effect, nearest-defender
distance, defender- related shot angle, contest-related shot-trajectory
factors, and trajectory-based defensive impact. |
Describe
how defender location, proximity, and contest conditions are associated
with shot selection, shot success, and shot trajectory. |
These indicators
can inform defensive evaluation, but individual defensive impact should
be interpreted with caution because assignments, help defense, switching,
and team coverage shape the observed effect. |
| Model-derived
indicators and complexity measures |
Expected
possession value, offensive network transition parameters, density-functional
player-density fields and interaction parameters, player gravity, and intrinsic
dimension. |
Estimate
possession value, player-lineup interactions, spatial influence, player
gravity, and movement complexity from high- dimensional tracking data. |
These indicators
provide model-based summaries rather than direct tactical labels. Their
interpretation depends on model inputs, state definitions, segmentation
rules, and validation evidence. |
|
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