Implementing Truncated Matrix Decompositions for Core.Matrix
Eigendecompositions and Singular Value Decompositions appear in a variety of settings in machine learning and data mining. The eigendecomposition looks like so: $$ \mathbf{A}=\mathbf{Q}\mathbf{\Lambda}\mathbf{Q}^{-1} $$ $ \mathbf{Q} $ contains the eigen...
Implementing Truncated Matrix Decompositions for Core.Matrix launched on November 28, 2014 with 12 votes and more than 75% of that year's launches. The site was still online in September 2026, 11 years on.
In plain words
This project implements truncated matrix decomposition algorithms for Core.Matrix, a Clojure linear algebra library. It provides efficient eigendecomposition and singular value decomposition capabilities for machine learning and data mining applications. The truncated variants allow users to compute only a subset of eigenvalues, eigenvectors, singular values, and singular vectors rather than complete decompositions, making computations faster and more memory-efficient for large matrices.
written from the facts on this page · September 2026
From the sources
Eigendecompositions and Singular Value Decompositions appear in a variety of settings in machine learning and data mining. The eigendecomposition looks like so: $ \mathbf{Q} $ contains the eigenvectors of $ \mathbf{A} $ and $ \mathbf{\Lambda} $ is a diagonal matrix containing the eigenvalues. $ \mathbf{U} $ contains the eigenvectors of the covariance matrix $ \mathbf{A}\mathbf{A^T} $. $ \mathbf{V} $ contains the eigenvectors of the gram matrix $ \mathbf{A^T}\mathbf{A} $. The truncated variants of these decompositions allow us to compute only a few eigenvalues(vectors) or singular values (vectors). This is important since (i) a lot of times, the smaller eigenvalues are discarded, and (ii)…from blog.shriphani.com
Does a similar job
all alternatives →
Wave function collapse algorithm2016 · github.com · ▲1,226Bitmap & tilemap generation from a single example with the help of ideas from quantum mechanics - mxgmn/WaveFunctionCollapse
Matrix Multiplication with Half the Multiplications2024 · github.com · ▲310Algebraic enhancements for GEMM & AI accelerators. Contribute to trevorpogue/algebraic-nnhw development by creating an account on GitHub.
Boldly go where Gradient Descent has never gone before with DiscoGrad2024 · github.com · ▲232Trying to do gradient descent using automatic differentiation over branchy programs? Or to combine them with neural networks for end-to-end training? Then this might be interesting to you. We develped DiscoGrad, a tool for automatic differentiation through C++ programs involving input-dependent control flow (e.g., "if (f(x) < c) { ... }", differentiating wrt. x) and randomness. Our initial motivation was to enable the use of gradient descent with simulations, which often rely heavily on such discrete branching. The latter makes plain autodiff mostly useless, since it can only account for the…
Matrixprofile-ts – A Python library for timeseries motifs and discords2019 · github.com · ▲95A Python library for detecting patterns and anomalies in massive datasets using the Matrix Profile - target/matrixprofile-ts
A hash array-mapped trie implementation in C2023 · github.com · ▲171Long-simmering side project that is finally ready to see the light. HAMTs are a cool persistent data structure and implementing one has been a lot of fun. Beyond the code, there is likely some value in the extensive and largely complete implementation docs; basic benchmarks are linked in the README, too. Kind of aiming to be "the libavl for HAMTs". That is obviously a high and aspirational bar but a distinct possibility if it stirs up a little interest and/or contribution. Anyways, it's time for this to go out, collect feedback and maybe even some use outside of toy projects. Let me…
More ai this month
the category →
Paintings by AI models: programs run through a simulation of oil paint.
AI · 20d ago · stillwet.art
PixVerse R2▲381A real-time world model you can explore and change
AI · 29d ago · world.pixverse.video
Source: Show HN post ↗
Launched alongside, November 2014
the whole month →
Startup Threads▲519Ship custom shirts to fans & leads without holding inventory
Life & fun · 2014 · game-corner.actionflash.com
- MM
Life & fun · 2014 · letstalkover.coffee