# Aggregate Integers

### Description
Group on the first column and aggregate the values of the second column of a `[OBJ,INTEGER]` input.

### Input
- `SOURCE [OBJ,INTEGER]`: a 2-column input with an object-integer pair.

### Output
- `RESULT [OBJ,INTEGER]`: unique objects from the first column, and aggregates values from the second column

### Parameters
- `Value aggregation`: the type of aggregation to apply to the values in the same group

Output scores can be [aggregated](docs://score_aggregation) and/or [normalised](docs://score_normalisation).