# `Mnemosyne.ValueFunction.Default`
[🔗](https://github.com/edlontech/mnemosyne/blob/main/lib/mnemosyne/value_function/default.ex#L1)

Default value function combining relevance with recency,
frequency, and reward signals from node metadata.

Score formula: `relevance * recency_factor * frequency_factor * reward_factor`

The `node` parameter is part of the `ValueFunction` behaviour contract,
enabling custom implementations to score based on node type or content.
This default implementation scores purely from metadata signals.

When metadata is nil, returns raw relevance for backward compatibility.

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*Consult [api-reference.md](api-reference.md) for complete listing*