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Represents one rule's contribution to a fraud score, built via its Builder. The value is how strongly the rule fired, from 0 (did not fire) to 1 (fired as hard as it can), and the weight is how many points of risk a full firing is worth; keeping the two apart is what lets an account retune a rule's importance without touching its logic. A signal can also be marked failed, meaning the rule threw or could not run: a failed signal contributes nothing and is reported separately, because a broken rule must never be able to block a transaction by itself, and must never be silently indistinguishable from a rule that ran and found nothing.
Properties
| Property | Returns | Description |
|---|---|---|
| evidence | String | A short human-readable reason this rule fired, for the reviewer looking at the event later. |
| failed | boolean | Whether the rule could not run. |
| failureMessage | String | Why the rule could not run. |
| ruleName | String | The name of the rule that produced this signal. |
| value | double | How strongly the rule fired. |
| weight | double | How many points of risk a full firing of this rule is worth. |
Methods
getRuleName()
Returns: String
The name of the rule that produced this signal.
getValue()
Returns: double
How strongly the rule fired.
getWeight()
Returns: double
How many points of risk a full firing of this rule is worth.
getEvidence()
Returns: String
A short human-readable reason this rule fired, for the reviewer looking at the event later.
isFailed()
Returns: boolean
Whether the rule could not run.
getFailureMessage()
Returns: String
Why the rule could not run.
calcPoints()
Returns: double
Calculates the points this signal contributes to the overall score, as value multiplied by weight.
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