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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.

169,341 papers · 148 categories

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134268401535 · Jun 202019922001200920182026
48 results for influential samples

Develops a framework to test excessive influence of small data subsets.

problem Identifying when small data subsets significantly impact model conclusions.
method Formalizes the concept of most influential sets, deriving influence formulas and extreme value distributions.
result Allows rigorous hypothesis testing for excessive influence, resolving contested findings.

Proposes second-order influence functions for identifying influential groups in test-time predictions.

problem Identifying influential groups in test-time predictions for black-box models.
method Second-order approximations of the effect of removing a group of training samples on model predictions.
result Improves the correlation between computed influence values and ground truth values for linear models.

For any matrix A in R^(m x n) of rank ρ, we present a probability distribution over the entries of A (the element-wise leverage scores of equation (2)) that reveals the most influential entries in the matrix. From a theoretical perspective, we prove that sampling at most s = O ((m + n) ρ^2 ln (m + n)) entries of the ma…

2013-10-14abs ↗pdf ↗

Improved real-time visualizations of conversation turns using dynamic attention weights.

problem Uniform attention weights in sequential analysis tasks prevent meaningful visualization.
method Developed a method to track changes in turn importance over time.
result More informative real-time visuals confirmed by human reviewers.

Algorithm detects influential observations in high-dimensional data.

problem Challenges in identifying influential observations in high-dimensional datasets.
method Three-step algorithm based on expectiles and asymmetric correlations.
result Higher detection power than competing methods.

Identifies influential users in collaborative filtering systems.

problem Impact of influential users on collaborative filtering systems.
method Formalized influence, identified influential users, analyzed impact across domains.
result Identified and characterized influential users and analyzed their impact.

A model predicts influential nodes in complex networks by considering indirect interactions.

problem Identifying influential nodes in complex networks using indirect interactions.
method Proposes MOGen, a multi-order generative model that considers all indirect influences up to a maximum distance.
result MOGen consistently outperforms network models and path-based approaches in predicting influential nodes.

The study identifies influential factors in VAE representations.

problem Identifying and supervising influential factors in VAE representations without manual intervention.
method Mutual information as a necessary indicator to discover influential factors; design an algorithm for calculating mutual information.
result Mutual information influences the lower bound of VAE's reconstruction error and downstream classification task.

This study uses complex networks to analyze influential spreaders and their effects on different market sectors.

problem Existing methods failed to distinguish between positive and negative influences of market sectors.
method LIEST (Local Influential Effects for Specific Target) method using complex network analysis.
result LIEST effectively distinguishes positive and negative influences of market sectors during different periods.

P&C combines multiple perturbed graphs to improve influential spreader detection.

problem Ineffective algorithms are unstable to small network perturbations.
method Creates multiple perturbed graphs, applies scoring function to each, and combines results.
result P&C significantly improves influential spreader detection without extra cost.

A method for finding most influential sets reduces a complex problem to a sequence of simpler top-kk problems.

problem Identifying most influential subsets in complex models.
method Reduces the problem to a sequence of top-kk problems using Dinkelbach's method.
result The method returns a globally optimal set for the univariate ratio objective, including partial linear models.

Paper develops a method to highlight influential transitions for off-policy evaluation.

problem Validating off-policy evaluation in high-stakes settings.
method Highlight influential transitions, develop influence functions for Q-evaluation.
result Method can identify limitations and make evaluation more robust.

Establishes statistical and computational bounds for influence diagnostics.

problem Identifying influential datapoints or subsets in machine learning models.
method Finite-sample statistical bounds and computational complexity for influence functions and approximate maximum influence perturbations.
result Established statistical and computational guarantees for influence diagnostics.

Study shows influence functions are poor for neural networks but useful for identifying influential examples.

problem Influence functions misalign with leave-one-out retraining in neural networks.
method Decomposed the discrepancy into five terms and studied their contributions across different architectures and datasets.
result Influence functions are a good approximation to the proximal Bregman response function (PBRF), useful for identifying influential examples.

Study examines influence diagnostics in high-dimensional M-estimation.

problem Understanding influence diagnostics in high-dimensional settings.
method Characterized the distribution of leave-one-out influences in high-dimensional Gaussian M-estimation.
result The distribution of influences converges to a limiting measure in high-dimensional settings.

The study identifies influential bioinformatics algorithms for scalable computing.

problem Data deluge in bioinformatics and need for scalable computing solutions.
method Identifying and analyzing influential data mining and machine learning algorithms.
result Guiding scalable computing experts to focus on specific bioinformatics algorithms.

Methodology calculates car insurance premiums for partial damage losses.

problem Estimating premiums for partial damage losses in automobile insurance.
method Used generalized linear models to analyze claim frequency and severity.
result Identified key variables influencing claim frequency and severity.

Identifies influential neurons in deep networks for better explanations.

problem Explaining complex behaviors of deep neural networks.
method Identifies neurons with high influence using an influence measure and provides interpretations.
result Identifies influential concepts that generalize across instances and isolates individual features used by the network.

A game-theoretic framework identifies influential hyperparameters for neural networks.

problem Understanding which hyperparameters are most important for neural network performance.
method Employing Shapley Effects for global sensitivity analysis and Pareto front sets for identifying effective configurations.
result Reveals which hyperparameters are most influential for different objectives in neural networks.

This work simplifies Bayesian inference for neural networks by identifying influential parameter directions.

problem High computational complexity in Bayesian inference for neural networks due to high-dimensional parameter space.
method Constructing an active subspace of influential parameter directions to reduce dimensionality.
result Effective and scalable Bayesian inference achieved via reduced active subspace.

Proposes a new sensitivity measure for optimization problems.

problem Optimization of high-dimensional functions with expensive computer codes.
method Introduces a new influence measure based on the Hilbert-Schmidt Independence Criterion.
result The new measure significantly reduces the number of function evaluations.

Study uses VC correlation to uncover directional financial relationships.

problem Understanding causal relationships between financial variables.
method Volatility constrained correlation (VC correlation) method.
result Operating income is most influential, while market capitalization and revenue are most susceptible.

New method reveals how training data influence diffusion model outputs.

problem Difficulty in assessing training data impact on diffusion model outputs.
method Use of ensembles trained on carefully engineered splits of training data to identify influential training examples.
result Demonstrated the viability of ensembles as generative models and validity of assessing influence.

Bayesian approach scores influential training examples for model predictions.

problem Enhance interpretability and safety of machine learning models.
method Formulate TDA as a Bayesian information-theoretic problem, scoring subsets by information loss.
result Method aligns with classical influence scores while promoting diversity for subsets.

Improved VAE model enhances uncertainty estimation for out-of-distribution samples.

problem VAEs assign higher likelihood to out-of-distribution inputs.
method INCPVAE integrates noise contrastive prior into VAEs for reliable uncertainty estimation.
result INCPVAE outperforms standard VAEs in uncertainty estimation for OOD inputs.

A new method improves robustness and efficiency of Bayesian LOO-CV.

problem Computational expense and unreliability of classical LOO-CV in high-dimensional Bayesian models.
method Proposes a mixture estimator to compute Bayesian LOO-CV criteria with finite asymptotic variance.
result Improved robustness and efficiency in high-dimensional problems.