Hi @jikeyu,
At inference time, both the SWIFT transaction dataset (rows belonging to the test set) and the bank account dataset will be available in a similar way as training time. More details on this will be forthcoming in “What to Expect in Phase 2” documentation that we will publish in the next few weeks.
For the scope of sensitive data in this challenge, please consider SWIFT’s transaction data table as belonging to SWIFT and sensitive, and the bank data table as belonging to the respective bank partition and sensitive. The situation in real life may be more complex, but this is simplified for the challenge.