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Understanding AI Agents
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An agent n...
An agent needs to recall a document it summarised three weeks ago — far beyond its context window. Which memory type is most appropriate?
External long-term memory, such as a vector database or file store that the agent can query with a search tool
In-context (short-term) memory by appending the document to the current prompt
The model's parametric (training) memory, since fine-tuning makes the model remember past sessions
Episodic memory stored in the agent's hidden states between sessions
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