The AI Field Guide / Z

Letter Z

2 terms, explained without the techno-murk.

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Zero data retention

Everyday

A policy or service setting intended to prevent submitted data and outputs from being stored after processing.

It is like using a shredder immediately after a document has served its purpose. The exact promise varies by provider: temporary processing, security logs, legal requirements or connected tools may be treated differently, so the contract and technical details matter more than the label alone.

For example

A company selects a zero-retention AI service before processing confidential customer notes.

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Zero-shot

Deeper

Doing a task without being shown a worked example of that exact task in the prompt.

A broadly trained model may apply general patterns to a new request immediately. Zero-shot does not mean the model had no training; it means no task-specific example was supplied at that moment.

For example

You ask a model to label reviews as positive or negative without first giving sample labelled reviews.

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