# jaccardSimilarity

**Kind:** Function

**Source:** [`atloria-monorepo/packages/doc-automation/src/v2/stages/stage-11-verification/grounding-checker.ts`](https://github.com/sherkety/atloria/blob/main/atloria-monorepo/packages/doc-automation/src/v2/stages/stage-11-verification/grounding-checker.ts#L110)

Calculate Jaccard similarity between two strings.
Splits both strings into word sets (lowercase) and returns |intersection| / |union|.

## Signature

```ts
function jaccardSimilarity(a: string, b: string): number
```

## Parameters

| Name | Type |
|---|---|
| `a` | `string` |
| `b` | `string` |

**Returns:** `number`