Solves a bounded dense multi-output least-squares problem and returns the minimu
Solves a bounded dense multi-output least-squares problem and returns the minimum-norm solution together with the diagnostics that say whether it can be trusted: numerical rank, the full singular value spectrum, the rank threshold actually applied, the residual, and the effective condition number. A rank-deficient system still gets an answer here, but it gets one that announces its own deficiency instead of a plausible vector with no warning attached.
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-dense-minimum-norm-solve
| 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 | $0.002 | 894 ms |
Example input (from the provider)
{
"body": {
"a": [
[
1,
0
],
[
1,
1
],
[
1,
2
]
],
"b": [
[
1
],
[
2
],
[
2
]
],
"error_covariance": null,
"rcond": 1e-12
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"a": {
"items": {
"items": {
"maximum": 1000000,
"minimum": -1000000,
"type": "number"
},
"maxItems": 128,
"minItems": 1,
"type": "array"
},
"maxItems": 128,
"minItems": 1,
"type": "array"
},
"b": {
"items": {
"items": {
"maximum": 1000000,
"minimum": -1000000,
"type": "number"
},
"maxItems": 32,
"minItems": 1,
"type": "array"
},
"maxItems": 128,
"minItems": 1,
"type": "array"
},
"error_covariance": {
"anyOf": [
{
"type": "null"
},
{
"items": {
"items": {
"maximum": 1000000,
"minimum": -1000000,
"type": "number"
},
"maxItems": 128,
"minItems": 1,
"type": "array"
},
"maxItems": 128,
"minItems": 1,
"type": "array"
}
]
},
"rcond": {
"maximum": 0.01,
"minimum": 1e-12,
"type": "number"
}
},
"required": [
"a",
"b",
"error_covariance",
"rcond"
],
"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"
}