标题： 日本职业B联盟关键时刻趋势与表现可视化 显示英文标题

标题： Trends and Performance Visualization of Clutch Time in Japan's Professional B.League

摘要： 反映日本篮球竞争力的近期提升以及在国际赛事中的关键结果，关键时刻的表现变得越来越重要。 我们使用2023-24赛季的逐球记录和数据统计来研究日本B联赛的关键时刻表现。 将关键时刻定义为最后五分钟内分差在五分以内的时段，我们比较了关键时刻和非关键时刻的效率和投篮选择。 我们重点关注按空间类别划分的有效投篮命中率（eFG%），包括禁区、中距离和三分球，并研究了联盟层面和球队层面的趋势。 我们进一步通过在筛选后的数据统计特征上进行K均值聚类，分析关键时刻的球员类型。 结果显示，在压力下，禁区触球和干净的三分机会仍然相对高效，而中距离表现则更加依赖于具体情况。 冠军赛的防守和侦察更为严密，使得许多球队的三分命中率有所下降。 我们的研究结果突显了战术灵活性的必要性，需要在高效的投篮选择与应对防守压力的适应性对策之间取得平衡。 我们讨论了末节战术安排、空间布局和阵容选择的战略意义，并概述了研究的局限性和未来方向。 显示英文摘要

摘要： Reflecting the recent rise in Japanese basketball's competitiveness and pivotal outcomes in international tournaments, clutch-time performance has become increasingly critical. We examine clutch-time performance in Japan's B.League using play-by-play and box-score data from the 2023-24 season. Defining clutch time as the final five minutes with a score margin within five points, we compare efficiency and shot selection between clutch and non-clutch windows. We focus on effective field-goal percentage (eFG%) by spatial category, including In the Paint, Mid-Range, and 3-Point, and investigate league-wide and team-level trends. We further profile player archetypes in clutch minutes via K-means clustering on filtered box-score features. Results show that paint touches and clean three-point looks remain comparatively efficient under pressure, whereas mid-range outcomes are more context-dependent. Championship games exhibit tighter defense and scouting, moderating three-point accuracy for many teams. Our findings highlight the need for tactical flexibility, balancing efficient shot selection with adaptive counters to defensive pressure. We discuss strategic implications for late-game play-calling, spacing, and lineup choices, and outline limitations and future directions.