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https://github.com/gerdm/pknn.jl
Probabilistic k-nearest neighbours
https://github.com/gerdm/pknn.jl
Last synced: 10 days ago
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Probabilistic k-nearest neighbours
- Host: GitHub
- URL: https://github.com/gerdm/pknn.jl
- Owner: gerdm
- Created: 2020-12-30T18:14:06.000Z (almost 4 years ago)
- Default Branch: master
- Last Pushed: 2021-08-01T20:59:26.000Z (over 3 years ago)
- Last Synced: 2024-10-14T13:02:58.695Z (25 days ago)
- Language: Julia
- Size: 30.3 KB
- Stars: 2
- Watchers: 3
- Forks: 2
- Open Issues: 1
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Metadata Files:
- Readme: README.md
Awesome Lists containing this project
- awesome-sciml - gerdm/pknn.jl: Probabilistic k-nearest neighbours
README
# Probabilistic k-nearest nerighbours
Let %20\vert%20y_n%20\in%20\{c_q\}_{q=1}^Q,%20{\bf%20x}_n\in\mathbb{R}^M\big\})
be a dataset.
A pknn model attempts to find the posterior distribution of neighbours )
given the likelihood function
%20=%20\frac{\exp\left(\frac{\beta}{k}\sum_{n\vert%20{\bf%20x}_n%20\in%20\mathcal{N}({\bf%20x}_i)}\mathbb{1}(y_n%20=%20y_i)\right)}{\sum_{q=1}^Q\exp\left(\frac{\beta}{k}\sum_{n\vert%20{\bf%20x}_n%20\in%20\mathcal{N}({\bf%20x}_i)}\mathbb{1}(y_n%20=%20q)\right)})