uwot - The Uniform Manifold Approximation and Projection (UMAP) Method for Dimensionality Reduction
An implementation of the Uniform Manifold Approximation and Projection dimensionality reduction by McInnes et al. (2018) <doi:10.48550/arXiv.1802.03426>. It also provides means to transform new data and to carry out supervised dimensionality reduction. An implementation of the related LargeVis method of Tang et al. (2016) <doi:10.48550/arXiv.1602.00370> is also provided. This is a complete re-implementation in R (and C++, via the 'Rcpp' package): no Python installation is required. See the uwot website (<https://github.com/jlmelville/uwot>) for more documentation and examples.
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dimensionality-reductionumapcpp
16.14 score 362 stars 194 dependents 3.0k scripts 78k downloadsRcppHNSW - 'Rcpp' Bindings for 'hnswlib', a Library for Approximate Nearest Neighbors
'Hnswlib' is a C++ library for Approximate Nearest Neighbors. This package provides a minimal R interface by relying on the 'Rcpp' package. See <https://github.com/nmslib/hnswlib> for more on 'hnswlib'. 'hnswlib' is released under Version 2.0 of the Apache License.
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approximate-nearest-neighbor-searchhnswk-nearest-neighborsknnnearest-neighbor-searchnmslibrcppcpp
10.09 score 41 stars 113 dependents 94 scripts 38k downloadsrnndescent - Nearest Neighbor Descent Method for Approximate Nearest Neighbors
The Nearest Neighbor Descent method for finding approximate nearest neighbors by Dong and co-workers (2010) <doi:10.1145/1963405.1963487>. Based on the 'Python' package 'PyNNDescent' <https://github.com/lmcinnes/pynndescent>.
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approximate-nearest-neighbor-searchcpp
9.22 score 17 stars 3 dependents 101 scripts 4.4k downloadsmize - Unconstrained Numerical Optimization Algorithms
Optimization algorithms implemented in R, including conjugate gradient (CG), Broyden-Fletcher-Goldfarb-Shanno (BFGS) and the limited memory BFGS (L-BFGS) methods. Most internal parameters can be set through the call interface. The solvers hold up quite well for higher-dimensional problems.
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conjugate-gradientl-bfgsnumerical-optimization
7.82 score 11 stars 6 dependents 28 scripts 607 downloads