# Slot: vectorized 


_Opt in to the vectorized matmul fast path for a source-only coupling — one whose pre_expression depends only on source states (e.g. the angle-addition decomposition [sin(theta_j), cos(theta_j)]). The W-reduction then becomes a single ``pre @ weights`` matmul instead of materialising the dense per-edge tensor. ONLY valid for INSTANTANEOUS coupling on a SYMMETRIC connectome (W == Wᵀ): the matmul contracts W while the per-edge path contracts Wᵀ, so the two agree only when W is symmetric. Default false keeps the always-correct per-edge reduction (and delays are inherently per-edge, so this flag is ignored when delayed=true)._



<div data-search-exclude markdown="1">



URI: [tvbo:slot/vectorized](https://w3id.org/tvbo/slot/vectorized)
<!-- no inheritance hierarchy -->





## Applicable Classes

| Name | Description | Modifies Slot |
| --- | --- | --- |
| [Coupling](../classes/Coupling.qmd) |  |  no  |






## Properties

### Type and Range

| Property | Value |
| --- | --- |
| Range | [xsd:boolean](http://www.w3.org/2001/XMLSchema#boolean) |
| Domain Of | [Coupling](../classes/Coupling.qmd) |

### Cardinality and Requirements

| Property | Value |
| --- | --- |
### Slot Characteristics

| Property | Value |
| --- | --- |
| If Absent | `False` |
| Owner | [Coupling](../classes/Coupling.qmd) |












## Identifier and Mapping Information





### Schema Source


* from schema: https://w3id.org/tvbo




## Mappings

| Mapping Type | Mapped Value |
| ---  | ---  |
| self | tvbo:vectorized |
| native | tvbo:vectorized |




## LinkML Source

<details>
```yaml
name: vectorized
description: 'Opt in to the vectorized matmul fast path for a source-only coupling
  — one whose pre_expression depends only on source states (e.g. the angle-addition
  decomposition [sin(theta_j), cos(theta_j)]). The W-reduction then becomes a single
  ``pre @ weights`` matmul instead of materialising the dense per-edge tensor. ONLY
  valid for INSTANTANEOUS coupling on a SYMMETRIC connectome (W == Wᵀ): the matmul
  contracts W while the per-edge path contracts Wᵀ, so the two agree only when W is
  symmetric. Default false keeps the always-correct per-edge reduction (and delays
  are inherently per-edge, so this flag is ignored when delayed=true).'
from_schema: https://w3id.org/tvbo
rank: 1000
ifabsent: 'False'
owner: Coupling
domain_of:
- Coupling
range: boolean

```
</details></div>