diff options
| -rw-r--r-- | src/embedders/vecmetric.rs | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/embedders/vecmetric.rs b/src/embedders/vecmetric.rs index 474a6d0..0c63911 100644 --- a/src/embedders/vecmetric.rs +++ b/src/embedders/vecmetric.rs @@ -18,8 +18,16 @@ impl VecMetric for ManhattenDistance {} #[rustfmt::skip] impl From<Vec<f32>> for ManhattenDistance { fn from(value: Vec<f32>) -> Self { Self(value) } } impl MetricElem for CosineSimilarity { - fn dist(&self, _other: &Self) -> f64 { - todo!() + fn dist(&self, other: &Self) -> f64 { + let x = self + .0 + .iter() + .zip(other.0.iter()) + .map(|(a, b)| *a * *b) + .sum::<f32>(); + let mag_a = self.0.iter().map(|x| x.powi(2)).sum::<f32>(); + let mag_b = other.0.iter().map(|x| x.powi(2)).sum::<f32>(); + (x / (mag_a * mag_b).sqrt()) as f64 } } impl MetricElem for EuclidianDistance { |