What does the Framework migration signal mean?

The Framework migration signal indicates a specific pattern of engineering acceleration. Full classification logic and the four-signal taxonomy are documented at /methodology and /signals.

Where can I find catboost's historical signal data across periods?

The startup hub at /startup/catboost consolidates every period of historical signal data for catboost, including commit-velocity change, contributor growth, and signal classification. The free /api/signals.json endpoint exposes the same data for programmatic access.

Q4 2025 · Historical Snapshot

catboost — Q4 2025 Engineering Signal

CatBoost is a fast, scalable, high performance gradient boosting on decision trees library. Used for ranking, classifica

Signal — Q4 2025

In Q4 2025, catboost showed -20% commit velocity change with 100 active contributors (+0% growth). Signal type: Framework migration. Ranked #9 of 15 in AI & Machine Learning for Q4 2025.

Metrics — Q4 2025

Commit Velocity (14d)

Velocity Change

-20%

Contributors

100

+0% growth

New Repos (30d)

Context

Sector: AI & Machine Learning (full Q4 2025 ranking)

Stage at time of snapshot: Growth

Geography: Unknown

Signal classification: Framework migration — learn what this signal means

See catboost's current signal

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