Aggregation helpers for multiple predictions or raw values.
majority/2 is the common helper for self-consistency style workflows: run a
program several times, then keep the most common answer. Pass field: :answer
when aggregating %Imp.Prediction{} values by a named output field. Without
a field, maps and structs are still safe to compare because the default
normalizer falls back to inspect/1 for values that do not implement
String.Chars.
Ties keep the first value from the winning normalized group.
Example
iex> predictions = [
...> Imp.Prediction.new(answer: "Paris"),
...> Imp.Prediction.new(answer: "paris"),
...> Imp.Prediction.new(answer: "Lyon")
...> ]
iex> Imp.Predict.Aggregation.majority(predictions, field: :answer)
"Paris"Summary
Functions
Normalizes values for majority grouping.
Returns the most common value after normalization.
Functions
Normalizes values for majority grouping.
Strings, atoms, numbers, and other String.Chars values use to_string/1.
Maps and structs fall back to inspect/1, avoiding crashes when callers
aggregate full prediction values.
Returns the most common value after normalization.
Options:
:fieldextracts a field from predictions or maps before voting.:normalizesupplies a custom one-argument grouping function.