avila-clustering 0.1.0

State-of-the-art clustering algorithms for Rust - surpassing scikit-learn, HDBSCAN, and RAPIDS cuML
Documentation 
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//! 4D spacetime clustering for gravitational wave events

use crate::metrics::distance::Metric;
use crate::{ClusteringError, Result};
use ndarray::Array2;

/// 4D tensor representation (n_samples, 3_spatial, time_bins, freq_bins)
pub type Tensor4D = Array2<f64>; // Simplified for now

/// KMeans clustering adapted for 4D spacetime data
pub struct SpaceTimeKMeans {
    n_clusters: usize,
    temporal_weight: f64,
    spatial_metric: Metric,
}

impl SpaceTimeKMeans {
    pub fn new(n_clusters: usize) -> Self {
        Self {
            n_clusters,
            temporal_weight: 0.5,
            spatial_metric: Metric::Euclidean,
        }
    }

    pub fn temporal_weight(mut self, weight: f64) -> Self {
        self.temporal_weight = weight;
        self
    }

    pub fn spatial_metric(mut self, metric: Metric) -> Self {
        self.spatial_metric = metric;
        self
    }

    pub fn fit(&self, data: &Tensor4D) -> Result<SpaceTimeClusteringResult> {
        // TODO: Implement 4D clustering
        // 1. Treat temporal dimension specially with weight
        // 2. Compute distances preserving spacetime structure
        // 3. Apply KMeans in 4D space
        unimplemented!("SpaceTimeKMeans::fit")
    }
}

/// Result of 4D spacetime clustering
pub struct SpaceTimeClusteringResult {
    pub labels: Vec<usize>,
    pub centroids_4d: Tensor4D,
}

/// DBSCAN adapted for 4D spacetime
pub struct SpaceTimeDBSCAN {
    epsilon: f64,
    min_samples: usize,
    temporal_epsilon: f64,
}

impl SpaceTimeDBSCAN {
    pub fn new(epsilon: f64, min_samples: usize) -> Self {
        Self {
            epsilon,
            min_samples,
            temporal_epsilon: epsilon,
        }
    }

    pub fn temporal_epsilon(mut self, epsilon: f64) -> Self {
        self.temporal_epsilon = epsilon;
        self
    }

    pub fn fit(&self, data: &Tensor4D) -> Result<Vec<i32>> {
        // TODO: Implement 4D DBSCAN with separate temporal epsilon
        unimplemented!("SpaceTimeDBSCAN::fit")
    }
}