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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.

169,291 papers · 148 categories

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48 results for stochastic subset selection

Improves performance in various machine learning tasks by reparameterizing subset sampling.

problem Stochastic optimization involving subset sampling is not reparameterizable.
method Continuous relaxation of subset sampling to provide reparameterization gradients.
result Improves performance in instance-wise feature selection, deep stochastic k-nearest neighbors, and parametric t-SNE.

A learner selects subsets of choices for a user who then picks from them, aiming to minimize regret.

problem Optimizing subset selection for user choices in a stochastic setting.
method Introduces a new problem and defines regret, then proposes algorithms with matching upper and lower bounds.
result Upper and lower bounds on expected regret match up to a logarithmic term, demonstrating algorithm efficiency.

A dynamic keyword selection model for topic modeling of tweets.

problem Adjusting keywords dynamically to mimic past topics with novelty.
method Generative process selects keywords and documents, trained with variational lower bound and stochastic gradient optimization.
result Keyword-based topic model outperforms a sophisticated baseline model by 67%.

BSF algorithm reduces neural network size and selects features efficiently.

problem Neural network size and feature selection optimization.
method Binary Stochastic Filtering (BSF) layer that penalizes information, stochastically passes or drops features.
result Multifold decrease in neural network size and optimal feature selection.

A new method for feature selection in high-dimensional data reduces search cost while maintaining performance.

problem Feature selection in very-high-dimensional datasets is computationally expensive and challenging.
method Stochastic Sequential Search (SSS) using temperature-controlled softmax sampling and dependency-aware statistics.
result The method significantly reduces search cost while maintaining or improving performance.

A new method for sparse linear bandits reduces exploration-exploitation tradeoff.

problem Sparse linear bandits in high-dimensional settings with finite actions.
method Best subset selection for parameter estimation and doubly growing epochs for regret minimization.
result Achieves nearly dimension-independent regret of ildeO(sT) ilde{\mathcal{O}}(s\sqrt{T}) with high probability.

Bayesian method improves adaptive testing item selection, ensuring full item exposure.

problem Adaptive testing selects items to estimate ability, but must also ensure diverse item exposure.
method Formulated as Bayesian model averaging, deriving optimal item sampling probabilities.
result Stochastic method achieves full item bank exposure without sacrificing accuracy.

Improved Bayesian neural network inference by selectively removing redundant modes.

problem Redundant modes in Bayesian neural network posteriors complicate approximate inference.
method Structured partial stochasticity and deterministic subset selection of weights.
result Improved performance of approximate inference schemes with simplified posterior distribution.

This paper improves volatility forecasting using dynamic subset selection in genetic programming.

problem Improving accuracy of implied volatility forecasting.
method Dynamic training-subset selection methods applied to genetic programming.
result Dynamic subset selection improves predictive accuracy of genetic programming models.

A new algorithm THV-UCB reduces regret in multi-objective bandit problems.

problem Maintaining a small set of actions that jointly approximate the Pareto frontier in multi-objective slate selection.
method THV-UCB, an optimistic algorithm that selects arms based on optimistic estimates of their marginal hypervolume contributions.
result The algorithm achieves a gap-free regret bound of ildeO(dnkT) ilde{O}(d\sqrt{nkT}) and a gap-dependent bound of ildeO(nk2.5/Δmin) ilde{O}(nk^{2.5}/Δ_{\min}).

In many classification problems unlabelled data is abundant and a subset can be chosen for labelling. This defines the context of active learning (AL), where methods systematically select that subset, to improve a classifier by retraining. Given a classification problem, and a classifier trained on a small number of la…

2014-07-30abs ↗pdf ↗

One-pass algorithm finds small subset for p\ell_p subspace approximation with additive error.

problem Finding a small subset of data points for p\ell_p subspace approximation.
method One-pass subset selection with additive approximation guarantee for p[1,)p \in [1, \infty).
result First one-pass algorithm with additive error for p\ell_p subspace approximation.

Bayesian approach selects subsets of variables for interpretable prediction and identifies key factors in educational outcomes.

problem Challenges in subset selection for stability, regularization, and inference.
method Bayesian perspective on subset selection, deriving optimal subsets and variable importance metrics.
result Better prediction, interval estimation, and variable selection compared to competing methods.

New algorithm for combinatorial bandit problems reduces regret.

problem Optimal selection of sets of arms in bandit problems.
method SGB algorithm with optimized exploration of unselected arms.
result Achieves (11/e)(1-1/e)-regret bound of O(n13k23T23log(T)23)\mathcal{O}(n^{\frac{1}{3}} k^{\frac{2}{3}} T^{\frac{2}{3}} \log(T)^{\frac{2}{3}}).

BWS selects best window subsets for efficient data pruning.

problem Challenges in selecting subsets of large datasets for neural network training.
method Best Window Selection (BWS) by choosing optimal window intervals from ordered sample scores.
result BWS outperforms other methods across various selection ratios and datasets.

New MCMC algorithm reduces subset selection passes to 2 for optimal kk-dimensional subspace approximation.

problem Subset selection for kk-dimensional subspace approximation with εε-approximation.
method MCMC sampling algorithm reducing passes to 2 for p=2p=2 case, poly(k/ε) size subset.
result Subset selection of nearly optimal size in 2 passes, (1+ε)(1+ε) approximation.

Two diversity models improve subset selection for image classification tasks.

problem Data scarcity and high costs in human labeling for supervised learning.
method Facility-Location and Disparity-Min models for training data subset selection and active learning.
result Subset selection improves accuracy by 2-3% with less training data.

New algorithm finds best subset in high-dimensional data models.

problem Finding the best subset of predictors in high-dimensional data models.
method Proposes a scalable algorithm using a generalized information criterion.
result Directly proves consistency and oracle property for the best-subset selection.

Efficiently selects predictors in sparse regression without approximations.

problem High computational cost in subset selection for sparse regression.
method Conditional uncorrelation formula and efficient non-approximate method.
result Significant reduction in computational complexity for subset selection.

A new algorithm selects web links to maximize revenue while ensuring user attractiveness.

problem Selecting web links to maximize revenue from multi-level feedbacks.
method Constrained Upper Confidence Bound (Con-UCB) algorithm for stochastic multi-armed bandit.
result Proves O(TlnT)O(\sqrt{T\ln T}) bounds on regret and attractiveness constraint violation.

New suboptimal algorithm for best subset selection in high-dimensional data.

problem Nonconvex and computationally challenging best subset selection in linear regression.
method Introducing a new suboptimal algorithm and comparing it with other popular methods.
result The new procedure is a competitive suboptimal algorithm for high-dimensional data.

OLPA optimizes online user-centric selection with probing, achieving near-optimal regret bounds.

problem Sequential decision-making with unknown resources and rewards.
method Probing-augmented user-centric selection (PUCS) framework, greedy probing algorithm, OLPA algorithm.
result OLPA achieves a near-optimal regret bound of O(T+ln2T)\mathcal{O}(\sqrt{T} + \ln^{2} T) for online settings.

A fast algorithm selects best subsets in high-dimensional models.

problem Identifying sparse models in high-dimensional generalized linear models.
method Splicing technique for fast and consistent best subset selection.
result Our algorithm achieves high certainty in selecting best subsets with polynomial computational complexity.

Proposes a neural framework to select subsets efficiently across different models.

problem Lack of generalizability in subset selection methods for unseen architectures.
method Introduces a trainable subset selection framework, SubSelNet, that uses attention-based neural gadgets and subset samplers.
result SubSelNet generalizes across architectures and outperforms existing methods.

The paper develops an algorithm to select a subset of training data for efficient regression models.

problem Designing an efficient algorithm for selecting a subset of training data to train regression models quickly without sacrificing accuracy.
method The paper tackles this problem by formulating it as a minimization of training loss with respect to both trainable parameters and subset of training data, subject to error bounds on the validation set. They use a novel problem formulation and represent it with simplified constraints using the dual of the original training problem. They then develop SELCON, an efficient majorization-minimization algorithm for data subset selection, which admits an approximation guarantee.
result The experiments show that SELCON trades off accuracy and efficiency more effectively than the current state-of-the-art.

We propose and analyze a new parallel coordinate descent method---`NSync---in which at each iteration a random subset of coordinates is updated, in parallel, allowing for the subsets to be chosen non-uniformly. We derive convergence rates under a strong convexity assumption, and comment on how to assign probabilities t…

2013-10-13abs ↗pdf ↗

Selective forgetting method cleans deep network weights of forgotten data.

problem Selective forgetting of specific data subsets in deep neural networks.
method A method to scrub weights clean of forgotten data without retraining.
result The method ensures indistinguishability of probing functions from a non-forgotten network.

Algorithm selects variables and bandwidths for geographically weighted regression.

problem Estimating variable subsets and bandwidths for geographically weighted regression.
method Mathematical programming-based approach integrating variable selection and bandwidth estimation.
result Proposed algorithm provides stable spatially varying patterns with competitive explanatory power.

For massive data sets, efficient computation commonly relies on distributed algorithms that store and process subsets of the data on different machines, minimizing communication costs. Our focus is on regression and classification problems involving many features. A variety of distributed algorithms have been proposed …

2014-10-24abs ↗pdf ↗

Automated model selects best subset of variables for regression.

problem Finding a subset of variables that minimizes errors and meets regression assumptions.
method Integrates model building and validation using mathematical programming.
result Proposes a model that minimizes mean squared errors while satisfying most regression assumptions.

Optimizes subset selection in multiple linear regression models.

problem Choosing a subset of variables for regression models to balance fit and complexity.
method Developed mathematical programming models and algorithms for subset selection, tested with branch-and-bound and iterative heuristic approaches.
result Proposed models and algorithms efficiently find optimal or near-optimal solutions.