LatestDataset Quality
What actually makes training data usable
Volume is the easiest property to measure and the least predictive of whether a dataset improves a model. Here is what tends to matter instead.
3 min read
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Insights
Thinking about AI data.
What we have learned about specification, annotation and quality — written for the people who have to make these decisions.
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8 articles
Data Annotation
Annotation guidelines are the real deliverable
Two annotators disagreeing about the same example is not a training problem. It is a definitions problem, and it is far cheaper to solve before collection than after.
3 min read
Multimodal AI
Why first-person video is a different kind of input
Egocentric footage preserves attention, approach and sequence — spatial context that third-person capture quietly discards.
3 min read
Computer Vision
Occlusion is where video datasets quietly break
Most annotator disagreement in video happens when an object is partly hidden. Deciding that once, in writing, is what keeps a track coherent.
3 min read
Speech AI
Transcription conventions decide your model's ceiling
How you write numbers, hesitation and overlap is not a detail. It is a decision the entire corpus inherits, and changing it later means starting again.
3 min read
NLP
When annotators disagree, look at the schema first
Persistent disagreement on the same kind of example is almost never carelessness. It is a label set that cannot be applied consistently.
2 min read
Generative AI
Synthetic data is a complement, not a replacement
Generated data is genuinely useful for coverage and for privacy-constrained domains. It is not a substitute for the real-world anchor.
2 min read
AI Data
How to scope a first dataset
The most common mistake is committing to volume before the specification has been tested. A small end-to-end pass costs less and tells you more.
3 min read
Dataset Quality
Inter-annotator agreement, and what it actually tells you
A single agreement score is a weak summary of a rich signal. What matters is where the disagreement sits and whether it is structured.
3 min read
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