Guides
Actuarial premium rate/Divergence
This translation is for convenience only; the Traditional Chinese version prevails.
Actuarial premium rate/Divergence
What is the difference signal?
Actuarial premium rate is a research metric used by PitchCopilot to describe the gap between model distribution and market-implied pricing. Divergence is a more general name, which refers to the probability or goal range of a certain direction that the model believes has an explainable distance from the external consensus. It does not simply "disagree with the market", but requires that differences be supported by data, counterpoint, rhythm and historical calibration.
In quantitative sports research, the differences themselves are not surprising. What really matters is whether the differences are stable, can be explained, pass human review, and leave reasonable performance in /performance over the long term. Without these conditions, Divergence is just noise. Readers can first use /guides/market-implied-pricing to understand the benchmark, and then come back to this article.
How to form actuarial premium rate
PitchCopilot will first establish the data distribution of the game, including the team's offensive quality, defensive pressure, home and away differences, schedule density, injuries and recent status. The model is then compared with market-implied pricing, data premium baseline and high/low zone pricing. If the model gives a higher or lower relative probability in a certain direction, an actuarial premium rate will be formed.
But the platform will not just look at the size of the gap. If the gap comes from data gaps, such as lineup information that has not yet been confirmed, manual review may lower the tone or move it to an observation item. If the gap comes from known weaknesses in the model, such as insufficient samples in a certain league, adjustments will be made before release. This is the importance of manual review and release: it makes research conclusions not just algorithmic output, but readable, traceable, and accountable editorial content.
Misunderstandings that readers should avoid
The first misreading is to think of Divergence as a guarantee. Any model can be wrong, especially when it comes to red cards, early injuries, extreme weather, or changes in rotation information. The second misunderstanding is to only pursue the largest gap. The largest gaps may represent opportunities, but they may also represent incomplete data or model bias. The third misunderstanding is to ignore the settlement definition; if the hit is not clearly defined beforehand, any statement afterwards will be unreliable.
So three things to ask when reading Divergence: Divergence relative to which benchmark? What is the reason for the data? Is long-term performance supported? These three questions also appear in the reading flow of /guides/reading-performance-dashboard and /guides/settlement-hit-definitions.
Relationship to virtual point research
When the actuarial premium rate is sufficiently clear, the model may convert it into a core or secondary allocation. Virtual point research allows different events to be standardized and compared: the same Divergence, with different confidence, volatility and data completeness, and different configuration weights. This avoids reporting using only adjectives to describe strengths and weaknesses, and allows consistent rules to express relative importance.
Divergence is a great narrative entry point for creators, but citations should retain limitations such as sample windows, versions, human review dates, and public performance links. See /guides/creators-citation-guide for citation formats.
What kind of differences are worth publishing?
PitchCopilot will divide Divergence into three categories: releasable, required to be retained, and not adopted. Publishable differences often have clear data justification, such as models capturing changes in matchup style, schedule pressure, or offensive quality that are not yet fully reflected in market-implied pricing. The differences that need to be retained may have a sense of direction, but are affected by lineup news, insufficient samples, or league fluctuations. As for unexplained differences, even if the values seem large, they should not be put into the core narrative.
Manual review will ask several questions: Can the difference be explained clearly in natural language? Are there corresponding settlement rules? If it misses, can the cause be determined afterwards? Does it conflict with past calibration results? These questions take Divergence from eye-popping numbers to verifiable research.
Readers can check themselves in the same way. When you see an actuarial premium rate, don’t rush to make it a priority, but first ask whether it is consistent with the model version, public performance and event context. Reports that proactively disclose limitations are often more credible because good research is not afraid to admit uncertainty.
Additional reading reminder
Another practical reminder is to note the difference in orientation and size. The model may agree with the direction of the external consensus, but not the strength, or it may be in the opposite direction, but the gap is small. Only when the magnitude of the difference, the rationale for the data, and the calibration record are all established, is it worthy of being included in the main narrative.
FAQ
Is the bigger the Divergence, the more worthy of attention?
uncertain. The gap needs to be supported by data justification and calibration records, otherwise it may just be noise.
Do actuarial premium rates change daily?
It will change with data updates, pricing changes and manual review time, so the report will retain the time of publication.
Where can I see the long-term effects?
See /performance in conjunction with /guides/brier-calibration to understand calibration metrics.
This translation is for convenience only; the Traditional Chinese version prevails.