ML behavioural scoring model¶


ID	`MOD-017`
System	SD03
Repo	`bank-aml`
Build status	Deployed
Deployed	Yes
Last commit	`e16822cd5e8a9beb30a47b1e7eb148e911340f39`

Snowflake Cortex model scores each customer's transaction against their own historical baseline and peer cohort. Anomalies generate risk score delta; high deltas queued for analyst review.

Module dependencies¶

Depends on¶

Module	Title	Required?	Contract	Reason
MOD-042	CDC pipeline — Neon logical replication to S3 Iceberg	Required	—	Snowflake Cortex model is trained and scored on transaction history delivered via the CDC pipeline.
MOD-039	Customer risk score model	Optional	—	Customer risk score provides a baseline signal that improves the behavioural model's anomaly detection.
MOD-104	AWS shared infrastructure bootstrap	Required	—	AWS shared infrastructure provisioned by MOD-104 (EventBridge buses, S3, KMS, Kinesis, Cognito) is required before this module can be deployed.
MOD-103	Neon database platform bootstrap	Required	—	Neon database and schema provisioned by MOD-103 must exist before this module can read or write Postgres.
MOD-102	Snowflake account configuration & governance	Required	—	Snowflake account locator, database names (BANK_{ENV}AML, BANK_RISK), warehouse names, and roles required for Dynamic Table creation and Cortex inference are provisioned by MOD-102 and read from SSM.

Required by¶

Module	Title	As	Contract
MOD-018	Alert case management system	Optional enhancement	—

Policies satisfied¶

Policy	Title	Mode	How
AML-005	Transaction Monitoring Policy	`AUTO`	Behavioural anomalies detected without requiring a specific rule — model adapts to new patterns
DT-005	Model Risk Management Policy	`LOG`	Model version controlled, validated, and logged — champion/challenger governance applied
AML-001	AML/CFT Programme Policy	`LOG`	ML model forms part of documented AML programme — supervisors can inspect model and outputs

Capabilities satisfied¶

(No capabilities mapped)

Part of SD03 — AML Transaction Monitoring Platform Compiled 2026-05-22 from source/entities/modules/MOD-017.yaml