Test a rater

Install Relativities and download the synthetic examples before running this page. This page tests the dwelling fire rater from Write your first rater. rslc check establishes properties of the implemented calculations and input constraints. Generated requests exercise those declared rules. Independently calculated cases test whether selected premiums agree with the intended rating algorithm.

Test	Shows
Rate generated requests	each request that passes the rules gets a premium
Rate generated bad requests	each broken rule gets its refusal
Match filed rating examples	the premiums equal the filing’s worked examples

Rate generated requests

Generate requests that pass every rule, and save them as JSON lines:

rslc inputs sample rater.rsl --n 5 --representation rate --json-lines samples.jsonl

Rate each one. The sample download includes the bundle and the file in relativities-examples/rsl/dwelling-fire:

import json

import rslc

rater = rslc.PreparedRater("relativities-examples/rsl/dwelling-fire")
with open("relativities-examples/rsl/dwelling-fire/samples.jsonl") as rows:
    for row in rows:
        payload = json.loads(row)["input"]
        result = json.loads(rater.rate(json.dumps(payload)))
        print(result["ok"], result.get("outputs", {}).get("Policy", {}).get("premium"))
# True 3793
# True 575
# True 3418
# True 7010
# True 7278

Each request gets a premium. The generator picks values at the edges and the middle of each range, such as the lowest and highest Coverage A.

Rate generated bad requests

Add --invalid. Each row breaks one rule and records the refusal it expects:

rslc inputs sample rater.rsl --n 4 --representation rate --invalid --json-lines invalid.jsonl

with open("relativities-examples/rsl/dwelling-fire/invalid.jsonl") as rows:
    for row in rows:
        row = json.loads(row)
        result = json.loads(rater.rate(json.dumps(row["input"])))
        codes = [v["code"] for v in result["refusal"]["violations"]]
        print(row["generation"]["mutation"], result["refusal"]["error"], codes)
# [email protected] InvalidInputs ['INPUT-TYPE']
# [email protected] BusinessRejection ['TOO-MANY-ITEMS']
# [email protected] InvalidInputs ['INPUT-TYPE']
# [email protected] BusinessRejection ['TOO-MANY-ITEMS']

mutation names the change: a missing dwelling, then too many items. The generator breaks list lengths, repeated keys, missing records and choices between record kinds. Write your own cases for number ranges and for rules that read several inputs.

Match the filed rating examples

A filing often prints worked examples. Rate each one and compare the premium exactly. These expected values come from the invented manual in the tutorial; replace them with independently established expectations for your filing:

cases = [
    ({"dwelling": {"coverage_a": 250000, "protection_class": 5}, "items": [{"value": 1200}, {"value": 800}]}, 1028),
    ({"dwelling": {"coverage_a": 250000, "protection_class": 5}}, 998),
]
for policy, expected in cases:
    result = json.loads(rater.rate(json.dumps({"Policy": policy})))
    assert result["outputs"]["Policy"]["premium"] == expected, result

Add one case at each band edge, such as protection classes 3 and 4.
Add one refusal case for each rule with a code, and compare the code.
To compare a value inside the calculation, rate with detailed=True.

Reconcile real quotes only after establishing their rating inputs, effective date, coverage scope, fees, and carrier-specific assignments. Record unexplained differences and any components outside the implemented scope. Validate a program covers the full comparison workflow.

Use the rslc commands covers each rslc inputs option.
Refusals lists the codes a refusal carries.

Get started

Comparative pricing

Prepare and validate

Concepts

Rater development

Python reference

Data reference

Rate generated requests

Rate generated bad requests

Match the filed rating examples

​Rate generated requests

​Rate generated bad requests

​Match the filed rating examples

​Related

Rate generated requests

Rate generated bad requests

Match the filed rating examples

Related