> ## Documentation Index
> Fetch the complete documentation index at: https://docs.activeviam.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Inter-Bucket correlations

Maps Bucket x Bucket to $\gamma_{bc}^{(sector)}$ correlation.

The file **CSR\_Sec\_CTP\_Bucket\_Correlations\*.csv** is loaded into the
**CSRBucketCorrelations** store.

| Data Model Field                                                                                                                                                                                                                                                                                                          | File Column | Datastore Column | Notes         |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------- | ---------------- | ------------- |
| Bucket $b$                                                                                                                                                                                                                                                                                                                | Bucket X    | Bucket X         | 1-16          |
| Bucket $c$                                                                                                                                                                                                                                                                                                                | Bucket Y    | Bucket Y         | 1-16          |
| $\gamma_{bc}^{(sector)}$ in [\[MAR21.57\]](https://www.bis.org/basel_framework/chapter/MAR/21.htm?inforce=20230101\&published=20200327#paragraph_MAR_21_20230101_21_57) (via [\[MAR21.61\]](https://www.bis.org/basel_framework/chapter/MAR/21.htm?inforce=20230101\&published=20200327#paragraph_MAR_21_20230101_21_61)) | Correlation | Correlation      |               |
| Risk Class                                                                                                                                                                                                                                                                                                                |             | RiskClass        | “CSR Sec CTP” |