heatdist
Implementation of diffusion-based distances in torch.
from torchheat.heat_kernel import HeatKernelGaussian, HeatKernelKNN
import torch
data = torch.randn(100, 5)
# Heat kernel for a gaussian affinity matrix
heat_op = HeatKernelGaussian(sigma=1.0, t=1.0)
dist = heat_op.fit(data, dist_type="var") # ["var", "phate", "diff"]
# Heat kernel for a k-nearest neighbor affinity matrix
heat_op = HeatKernelKNN(k=5, t=1.0)
dist = heat_op.fit(data, dist_type="var") # ["var", "phate", "diff"]
Below is an example of distance matrices from a line embedded in two dimensions. The Euclidean distance between the two sets of points highlighted in green does not reflect the true distances on the one dimensional line.
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Release files for torchheat 0.2.0
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