Vocabulary

Understand the term. Connect the concept.

A practical dictionary of 512 AI, machine learning, mathematics, and programming terms from HerbDev’s AI Vocabulary app. Start with a definition, explore an example, then follow the concepts behind it.

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Q-Function

Reinforcement Learning · Level 3 of 5

Q-Function

An estimate of expected return for taking an action in a state and then following a policy.

It distinguishes the value of different immediate choices.

Example

A game agent scores moving left versus moving right.

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Audio transcript

Q-Function. An estimate of expected return for taking an action in a state and then following a policy. It distinguishes the value of different immediate choices. For example: A game agent scores moving left versus moving right.

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This helps you separate what an agent observes, chooses, and optimizes.

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