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Change the count type from int32 to float32 to avoid overflows. #364

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Change the count type from int32 to float32 to avoid overflows. #364

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7 changes: 4 additions & 3 deletions clu/metrics.py
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Original file line number Diff line number Diff line change
Expand Up @@ -784,20 +784,21 @@ class Average(Metric):

@classmethod
def empty(cls) -> Average:
return cls(total=jnp.array(0, jnp.float32), count=jnp.array(0, jnp.int32))
return cls(total=jnp.array(0, jnp.float32), count=jnp.array(0, jnp.float32))

@classmethod
def from_model_output(
cls, values: jnp.ndarray, mask: jnp.ndarray | None = None, **_
) -> Average:
values, mask = _broadcast_masks(values, mask)
return cls(
total=jnp.where(mask, values, jnp.zeros_like(values)).sum(),
total=jnp.where(mask, values, jnp.zeros_like(values)).sum().astype(
jnp.float32),
count=jnp.where(
mask,
jnp.ones_like(values, dtype=jnp.int32),
jnp.zeros_like(values, dtype=jnp.int32),
).sum(),
).sum().astype(jnp.float32),
)

def merge(self, other: Average) -> Average:
Expand Down