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A locally-built, LLM-digested index of recent arXiv papers in quant finance, geometry/topology, and statistical ML — keyword search served straight from SQLite on this machine.

168,742 papers · 148 categories

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0111 · Oct 201319922001200920172026
9 results for Walsh-Hadamard

Paper proposes Walsh-Hadamard Variational Inference for efficient approximate inference in large models.

problem Over-regularization in variational inference for large models.
method Walsh-Hadamard factorization strategies to reduce parameterization, accelerate computations, and increase posterior expressiveness.
result Efficient approximate inference achieved in over-parameterized models.

Over-parameterized models, such as DeepNets and ConvNets, form a class of models that are routinely adopted in a wide variety of applications, and for which Bayesian inference is desirable but extremely challenging. Variational inference offers the tools to tackle this challenge in a scalable way and with some degree o…

2019-05-27abs ↗pdf ↗

The Weyl transform is introduced as a rich framework for data representation. Transform coefficients are connected to the Walsh-Hadamard transform of multiscale autocorrelations, and different forms of dyadic periodicity in a signal are shown to appear as different features in its Weyl coefficients. The Weyl transform …

2014-12-18abs ↗pdf ↗

New algorithms learn sparse set functions in non-orthogonal Fourier bases.

problem Learning sparse set functions in non-orthogonal Fourier bases.
method Novel algorithms using non-orthogonal Fourier transforms.
result At most nkklog2k+knk - k \log_2 k + k queries for kk non-zero Fourier coefficients.

Improved SRHT for linear SVM classification with higher accuracy.

problem Inefficient random projection methods for high-dimensional data.
method Importance sampling and deterministic top-rr sampling for effective low-dimensional embedding.
result Higher classification accuracy on real-life datasets.

Paper addresses privacy and communication in distributed learning, achieving optimal performance.

problem Balancing privacy, communication, and accuracy in distributed learning and estimation.
method Developed novel encoding and decoding mechanisms for mean and frequency estimation under local differential privacy and communication constraints.
result Achieved optimal privacy and communication efficiency in mean and frequency estimation.