| Variable | Definition |
|---|---|
| a | Action |
| αj | Dirichlet prior for particular value on particular stimulus dimension |
| α0 | Dirichlet prior for a particular stimulus dimension |
| c | Coupling probability |
| Cij | Number of times value j has been observed on dimension i in a particular cluster |
| G | Expected gain in utility |
| F | Features (or “Dimensions”) |
| j | Feature value |
| O | Indices of observed (i.e., previously sampled) dimensions |
| k | Cluster number |
| ℒ | Sampling cost associated with particular dimensions |
| nk | Number of items assigned to cluster k |
| i | Index of dimension considered for sampling |
| U | Utility |
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