Applies the standard affine propagation of uncertainty
Applies the standard affine propagation of uncertainty: the mean goes through the transform and offset, the covariance through the transform on both sides, and the independent noise covariance is added. This is the prediction step of a Kalman filter and the workhorse of any linear error budget.
Answeringour last check, 2026-10-24
1 of 1checks answered this week
891 msmedian answer time
$0.0015listed price per call
$0.0015price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://stat.halowerk.com/v1/oss-openblas-linear-covariance-pushforward
| Category | Everything else |
|---|---|
| Provider host | stat.halowerk.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-24 | valid payment request | 402 | $0.0015 | 891 ms |
Example input (from the provider)
{
"body": {
"covariance": [
[
4,
1
],
[
1,
9
]
],
"mean": [
1,
2
],
"noise_covariance": [
[
1,
0
],
[
0,
4
]
],
"offset": [
1,
0
],
"transform": [
[
1,
2
],
[
-1,
0
]
]
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"covariance": {
"items": {
"items": {
"maximum": 1000000,
"minimum": -1000000,
"type": "number"
},
"maxItems": 128,
"minItems": 1,
"type": "array"
},
"maxItems": 128,
"minItems": 1,
"type": "array"
},
"mean": {
"items": {
"maximum": 1000000,
"minimum": -1000000,
"type": "number"
},
"maxItems": 128,
"minItems": 1,
"type": "array"
},
"noise_covariance": {
"items": {
"items": {
"maximum": 1000000,
"minimum": -1000000,
"type": "number"
},
"maxItems": 128,
"minItems": 1,
"type": "array"
},
"maxItems": 128,
"minItems": 1,
"type": "array"
},
"offset": {
"items": {
"maximum": 1000000,
"minimum": -1000000,
"type": "number"
},
"maxItems": 128,
"minItems": 1,
"type": "array"
},
"transform": {
"items": {
"items": {
"maximum": 1000000,
"minimum": -1000000,
"type": "number"
},
"maxItems": 128,
"minItems": 1,
"type": "array"
},
"maxItems": 128,
"minItems": 1,
"type": "array"
}
},
"required": [
"mean",
"covariance",
"transform",
"offset",
"noise_covariance"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}