Olympic Coaching Effect Analysis with Decay Model

You Liu's research on figshare presents a methodological framework for evaluating the dynamic impact of great coaches on Olympic performance. The study introduces a Change-Point Driven Difference-in-Differences with Decay Model, analyzing effect half-lives, such as 20 years for systematic coaching and 5.3 years for technology-driven intervention. It includes a prediction for the Brazilian swimming team's medal breakthrough at the 2028 Los Angeles Olympics.

Use Cases

• Apply the Change-Point Driven Difference-in-Differences with Decay Model to quantify the net effect of coach turnover events in sports performance data.
• Use the improved CUSUM algorithm with a dual test mechanism to detect and filter performance abrupt points from pseudo-signals like host effects.
• Analyze the sustainability difference of coaching effects by applying the half-life model to empirical results like the 20-year and 5.3-year half-lives.
• Extend the methodology for dynamic causal inference in policy evaluation and organizational management beyond Olympic strategy.

Strengths

• Methodology validated with empirical results, including specific half-life calculations (e.g., 20 years for systematic coaching).
• Includes a concrete prediction for the 2028 Olympics: Brazilian swimming team achieving 0 to 5 medals (95% CI: 4.7–6.3).
• Published under a permissive CC BY 4.0 license, facilitating reuse and adaptation.

Limitations

• The dataset is a 7.2 KB ZIP file, indicating it contains supplementary materials or code, not a primary performance dataset.
• No raw Olympic performance data, columns, or sample data are provided, limiting direct analytical application.
• The research is a methodological study; users must source their own performance data to apply the proposed models.

Provenance

Source

figshare, authored by You Liu.

Collection Method

Research proposing a novel statistical model (Change-Point Driven Difference-in-Differences with Decay Model) for causal inference.

Time Range

Analysis references future prediction for the 2028 Los Angeles Olympics.

Freshness

Last updated March 13, 2026.

Geography

Includes case studies on Chinese diving and Japanese judo, with a prediction for the Brazilian swimming team.