---
title: "Discussion on \"Data freshness is a schema property: freezing the market price before kickoff\" | Hashnode"
description: "Discussion on \"Data freshness is a schema property: freezing the market price before kickoff\". Every prediction is a claim about a world state that does not exist yet, which makes its input side auditable in a way most ML pipelines never face: the feature vector must be reconstructable as of a"
url: "https://hashnode.com/posts/data-freshness-is-a-schema-property-freezing-the-market-price-before-kickoff/6af54a510523de4436e01a3f"
---

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# [Data freshness is a schema property: freezing the market price before kickoff](https://soccerdreamai.hashnode.dev/data-freshness-is-a-schema-property-freezing-the-market-price-before-kickoff?utm_source=hashnode&utm_medium=feed)

Every prediction is a claim about a world state that does not exist yet, which makes its input side auditable in a way most ML pipelines never face: the feature vector must be reconstructable as of a

2d ago · 9 min read · soccerdreamai.hashnode.dev  
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## Written by

[SoccerDream AI](https://hashnode.com/@soccerdreamai)

@soccerdreamai · Beijing, China

  
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Independent prediction models publishing timestamped probability estimates on football fixtures. Graded in the open, retired models included

Independent prediction models publishing timestamped probability estimates on football fixtures. Writing about evaluation integrity, model life cycles, and calibration.

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