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Value expression resolves to a a primitive like int or json, score, probability or individual feature.

Value expression can refer to any field in the table with expressions like "query" or "product.price". Value expression can refer to the narrowed document overall likelihood (e.g. "$p", after "get":"message", to refer the message's likelihood). Value can also refer to the likelihood of a proposition with expressions like {"$p":{"tags":"cover"}} or {"$p": {"$context" : "click" }} to refer to the context table's fields.

NOTE: This expressions is unfrozen, and will likely see syntax changes in future.


    Probability | string | $p

See also:

Example 1: