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arXiv research

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.

169,051 papers · 148 categories

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48 results for SGD-based algorithms

Cluster-GCN efficiently trains deep GCNs on large graphs without memory or computational constraints.

problem Training large-scale GCNs is computationally and memory-intensive.
method Cluster-GCN exploits graph clustering to restrict neighborhood search to dense subgraphs, reducing memory and computational requirements.
result Cluster-GCN achieves comparable test accuracy to previous algorithms while being faster and using less memory.

OptEx accelerates first-order optimization with parallelized iterations.

problem Inefficiencies in first-order optimization algorithms for complex tasks.
method Approximately parallelized iterations using kernelized gradient estimation.
result OptEx achieves substantial efficiency improvements with an effective acceleration rate of Ω(N)Ω(\sqrt{N}).

We present a dual subspace ascent algorithm for support vector machine training that respects a budget constraint limiting the number of support vectors. Budget methods are effective for reducing the training time of kernel SVM while retaining high accuracy. To date, budget training is available only for primal (SGD-ba…

2018-06-26abs ↗pdf ↗

New algorithms reduce bilevel optimization complexity to ε^(-1.5).

problem Efficiently solving bilevel optimization problems in machine learning.
method Proposed two new algorithms: one using momentum-based recursive iterations, the other using recursive gradient estimations.
result Achieved computational complexity of ε^(-1.5), significantly faster than previous methods.

This paper explores the limits of deep learning in poly-time.

problem Characterizing function distributions that deep learning can or cannot learn efficiently.
method Analysis of SGD and GD-based deep learning approaches, proving universality and non-universality results.
result SGD-based deep learning is efficiently universal, while GD-based is not, especially with large batches.

ESGD optimizes deep neural networks using evolutionary and stochastic gradient descent methods.

problem Optimizing deep neural networks efficiently and effectively.
method Combines SGD and evolutionary algorithms, alternating between steps to improve population fitness.
result Guarantees that the best fitness in the population never degrades and optimizes across various deep architectures.

New analysis shows D-SGD can generalize well regardless of graph connectivity.

problem Improving generalization of D-SGD in decentralized settings.
method Algorithmic stability analysis and optimization-dependent generalization bounds.
result D-SGD can achieve generalization bounds similar to classical SGD, independent of graph connectivity.

Efficient algorithms improve learning of large-margin halfspaces.

problem Learning large-margin halfspaces efficiently and reproducibly.
method Design of efficient, dimension-independent, polynomial-time algorithms; SGD-based approach; DP-to-Replicability reduction.
result Improved sample complexity compared to previous algorithms, with optimal sample complexity for one algorithm.

An ADRC-incorporated SGD algorithm improves latent factor analysis speed and accuracy.

problem Slow convergence in standard SGD for HDI matrix analysis.
method Incorporates ADRC principles to refine historical and future learning error states.
result Empirically outperforms state-of-the-art LFA models in HDI matrix prediction.

Paper proposes an online estimator for covariance matrix of SGD iterates.

problem Quantifying variability and randomness of SGD-based estimates in online learning.
method Proposes a fully online estimator for covariance matrix of ASGD using SGD iterates.
result Establishes consistency of the online estimator and shows comparable convergence rate to offline methods.

ROOT-SGD solves convex optimization problems with optimal nonasymptotic and near-optimal asymptotic performance.

problem Solving strongly convex and smooth unconstrained optimization problems using stochastic first-order algorithms.
method ROOT-SGD: Recursive One-Over-T SGD, averaging past stochastic gradients.
result Achieves state-of-the-art performance in both nonasymptotic and asymptotic senses.

AdamNX improves Adam's stability by adjusting its learning rate.

problem Adam's tendency to converge to non-flat minima in large-scale models.
method Proposes a novel exponential decay mechanism for Adam's second-order moment estimate.
result AdamNX outperforms Adam and its variants in stability and performance.

The training phases of Deep neural network~(DNN) consumes enormous processing time and energy. Compression techniques utilizing the sparsity of DNNs can effectively accelerate the inference phase of DNNs. However, it can be hardly used in the training phase because the training phase involves dense matrix-multiplicatio…

2018-05-23abs ↗pdf ↗

We present a novel method for frequentist statistical inference in MM-estimation problems, based on stochastic gradient descent (SGD) with a fixed step size: we demonstrate that the average of such SGD sequences can be used for statistical inference, after proper scaling. An intuitive analysis using the Ornstein-Uhlen…

2017-05-21abs ↗pdf ↗

SGD with machine learning noise converges to global minimum exponentially fast.

problem Optimizing machine learning models with stochastic gradient descent.
method Analysis of SGD with machine learning noise, focusing on energy landscapes and gradient noise.
result SGD converges to the global minimum exponentially fast under certain conditions.

Stochastic optimization improves semi-discrete OT map estimation with a minimax rate.

problem Empirical success of SGD in semi-discrete OT, but lack of theoretical guarantees.
method Averaged projected SGD with a minimax convergence rate of O(1/√n).
result SGD methods can estimate the OT map with a minimax convergence rate of O(1/√n).

A new method for statistical inference using SGD under φφ-mixing data.

problem Valid statistical inference for time series data with general correlation.
method Proposes a mini-batch SGD estimator and associated mini-batch bootstrap procedure for φφ-mixing data.
result The proposed method constructs valid confidence intervals for φφ-mixing data.

Improved time complexity for parallel stochastic optimization in heterogeneous systems.

problem Time complexity in parallel stochastic optimization for large-scale machine learning models.
method Proposes Rennala MVR, a variance-reduced extension of Rennala SGD based on momentum-based variance reduction.
result Variance reduction improves time complexity in relevant parameter regimes for parallel stochastic optimization in heterogeneous systems.

We develop algorithms to learn non-linear dynamical systems without mixing assumptions.

problem Learning non-linear dynamical systems from dependent data.
method We introduce an offline algorithm and a one-pass streaming method with SGD-RER.
result Our methods achieve optimal or near-optimal performance for learning non-linear systems.

DRO-REBEL improves LLM alignment by robustly updating models online.

problem Overfitting and drifting of LLMs during RLHF.
method DRO-REBEL uses type-pp Wasserstein, KL, and χ2χ^2 ambiguity sets for robust online updates.
result DRO-REBEL achieves faster convergence and better performance than prior methods.

SONAR improves outlier detection for streaming data with strong theoretical guarantees.

problem Outlier detection for non-stationary streaming data with high Type I/II errors.
method SONAR is an efficient SGD-based OCSVM solver with strong convex regularization and lifelong learning guarantees.
result SONAR outperforms traditional OCSVM in Type I/II error rates under non-stationary data.

A new federated learning method reduces communication costs and improves adaptivity.

problem Large communication overhead and lack of adaptivity in federated learning.
method FedCAMS: A novel communication-efficient adaptive federated learning method with theoretical guarantees.
result FedCAMS achieves the same convergence rate as non-compressed federated learning methods.

In many applications involving large dataset or online updating, stochastic gradient descent (SGD) provides a scalable way to compute parameter estimates and has gained increasing popularity due to its numerical convenience and memory efficiency. While the asymptotic properties of SGD-based estimators have been establi…

2017-07-01abs ↗pdf ↗

Optimal learning rate schedules for SGD in changing data distributions.

problem Minimizing regret in online learning with changing data distributions.
method Characterized optimal schedules for linear regression, proposed schedules for general convex and non-convex losses, and defined a notion of regret for non-convex losses.
result Upper and lower bounds for regret with constants for convex losses, and an upper bound on total expected regret for non-convex losses.

Paper improves stability analysis of SGD for various loss functions and data distributions.

problem Improving stability analysis of SGD for non-convex loss functions and data distributions.
method Analyzes stability of SGD for convex and non-convex loss functions, and improves data-dependent bounds.
result Improved stability bounds for non-convex loss functions and convex regularized loss functions.

Neural network learns low-dimensional polynomials with SGD near information-theoretic limit.

problem Learning a single-index target function with gradient descent.
method Two-layer neural network optimized by SGD on squared loss.
result Sample and runtime complexity of nT=Θ(d ⁣ ⁣polylogd)n \simeq T = Θ(d\!\cdot\! \mathrm{polylog} d) for polynomial single-index models, matching information theoretic limit up to polylogarithmic factors.

Study uses SGD to find near-optimal execution cost policies in dynamic markets.

problem Finding optimal execution cost policies in complex markets.
method Stochastic Gradient Descent (SGD) approach to derive near-optimal policies.
result SGD-based policies offer valuable insights and are implementable in volatile markets.

Hybrid QC system for Bengali questions using smart data balancing.

problem Classifying factoid questions in Bengali.
method Two-stage approach with 1D CNN for coarse classification and SGD for fine classification.
result Effectiveness of smart data balancing technique in improving classification accuracy.

AngularGrad optimizes CNNs by considering gradient direction, improving convergence.

problem Dying gradient problem and inefficiency in exploiting gradient curvature.
method AngularGrad considers gradient direction/angle, generating a score for step size control.
result AngularGrad outperforms state-of-the-art optimizers in benchmark tests.

Paper introduces elastic consistency for distributed SGD, enabling convergence analysis.

problem Training large-scale machine learning models in distributed environments.
method Introduces elastic consistency as a general consistency model for distributed SGD.
result Derives convergence bounds for various distributed SGD methods.

This paper studies communication efficiency in federated learning by optimizing the sum-rate-distortion function for indirect multiterminal source coding.

problem Indirect multiterminal source coding in federated learning where edge devices send noisy gradients to the server.
method Analyzes the rate region for the quadratic vector Gaussian CEO problem under unbiased estimator and derives an explicit formula for the sum-rate-distortion function.
result Derives an explicit formula for the sum-rate-distortion function in the special case of identical gradients over edge devices.

Develops anytime-valid stopping rules for SGD based on observed trajectory.

problem Stopping stochastic gradient descent (SGD) based on observed trajectory.
method Develops anytime-valid confidence sequences for stochastic gradient methods.
result Statistically valid, time-uniform stopping rules for SGD across convex and nonconvex settings.

New bounds for SGD in high dimensions improve inference efficiency.

problem Quantifying uncertainty in high-dimensional SGD.
method Established non-asymptotic Berry--Esseen bounds for online least-squares SGD.
result Gaussian Central Limit Theorem holds for td1+δt \gtrsim d^{1+δ}, extending dimensional scaling.