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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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3.9%7.8%11.6%15.5% · Mar 202019922001200920182026
48 results for adversary strategy

Paper defends iris recognition from adversarial examples using wavelet decomposition.

problem Adversarial examples threaten deep neural networks in biometric applications.
method Wavelet domain denoising of input examples to detect and mitigate adversarial attacks.
result Proposed defense strategies improve recognition accuracy against adversarial attacks.

New strategy uses interpretability to improve adversarial learning.

problem Improving adversarial learning speed and effectiveness.
method Spatially constrained one-pixel adversarial perturbations guided by gradient-based interpretability.
result Spatially constrained one-pixel adversarial perturbations noticeably improve convergence and attack success.

Neural networks are known to be vulnerable to adversarial examples. Carefully chosen perturbations to real images, while imperceptible to humans, induce misclassification and threaten the reliability of deep learning systems in the wild. To guard against adversarial examples, we take inspiration from game theory and ca…

2018-03-05abs ↗pdf ↗

Study on learning strategies in adaptive Markov games with policy regret as metric.

problem Learning in dynamic Markov games with adaptive opponents is challenging.
method Introduced policy regret as a new learning metric and developed algorithms for consistent adaptive adversaries.
result Achieved T\sqrt{T} policy regret against certain adaptive adversaries.

New approach optimizes policies in adversarial MDPs using adversarial learning.

problem Optimizing policies in adversarial Markov decision processes.
method Adversarial learning on advantage functions, extending previous reductions.
result Stronger regret criteria and performance guarantees for policy optimization.

No universal trading strategy exists due to mathematical impossibilities.

problem The impossibility of universally winning trading strategies in competitive markets.
method Three mathematical paradigms: measure-theoretic, No-Free-Lunch theorem, and adversarial Cantor diagonalization.
result No-arbitrage and free-lunch principles are mathematically precluded in competitive markets.

The paper introduces a method to make neural networks more robust to adversarial attacks.

problem Vulnerability of deep neural networks to small, adversarially designed perturbations.
method A bottom-up strategy using a nonlinear front end that polarizes and quantizes data.
result The approach can completely eliminate adversarial perturbations on MNIST and Fashion MNIST datasets.

Generative Adversarial Networks create realistic financial correlation matrices.

problem Creating realistic financial correlation matrices for practical applications.
method Generative Adversarial Networks (GANs) to model correlation matrices.
result GANs can recover known stylized facts about empirical correlation matrices.

Proposes a defense method against multiple adversarial video types.

problem Lack of multi-perturbation robustness in existing defense approaches.
method Adversarial training with multiple independent BN layers and a BN selection module.
result Demonstrates stronger multi-perturbation robustness against different adversarial video types.

New findings suggest both robust and accurate models are possible.

problem Clarifying the relationship between adversarial robustness and generalization.
method Assumed a low-dimensional data manifold and analyzed adversarial examples.
result On-manifold adversarial examples are generalization errors, and on-manifold adversarial training boosts generalization.

Generative Adversarial Networks simulate realistic market interactions.

problem Lack of agent-level historical data limits market simulation realism.
method Conditional Generative Adversarial Networks (CGANs) trained on real data.
result CGAN-based synthetic market generator outperforms previous methods in market responsiveness and realism.

Develops a strategy to minimize loss in both stochastic and adversarial environments for linear contextual bandits.

problem Linear contextual bandits with adversarial corruption.
method Proposes a novel strategy called Best-of-Both-Worlds (BoBW) RealFTRL, extending RealLinExp3 and FTRL.
result Regret upper bound of $O\left(\min\left\{\frac{(\log(T))^3}{Δ_{*}} + \sqrt{\frac{C(\log(T))^3}{Δ_{*}}},\ \ \sqrt{T}(\log(T))^2 ight\} ight)$, showing effectiveness in both stochastic and adversarial environments.

A new method for estimating adversarial strategies in nonlinear systems.

problem Inferring an intelligent adversarial agent's strategy in highly nonlinear systems.
method Formulated inverse cognition as a nonlinear Gaussian state-space model and developed an inverse UKF (IUKF) system.
result The estimation error of IUKF converges and closely follows the recursive Cramér-Rao lower bound.

OpenAlpha validates decentralized capital strategies using game theory and market aggregation.

problem Decentralized capital management's lack of trust-minimised, adaptive deployment.
method Game-theoretic validation, adversarial auditing, market-based belief aggregation.
result Confidence scores from validation phases inform capital allocation rules.

New algorithm optimally identifies best arm in both stochastic and adversarial settings.

problem Best arm identification in stochastic and adversarial reward scenarios.
method Parameter-free algorithm designed to be robust to adversarial rewards and optimal in stochastic problems.
result Algorithm's error rate matches optimal bounds in stochastic problems and is robust to adversarial rewards.

Optimal adversarial noise algorithms for multiple classifiers using game theory.

problem Designing robust attacks against multiple classifiers.
method Formulating the problem as a two-player, zero-sum game and using Multiplicative Weights Update framework with best response oracles.
result Demonstrated the effectiveness of randomization in adversarial attacks and optimal mixed strategies.

This work proposes a robust ensemble method for decision trees that resists adversarial attacks.

problem Adversarial attacks on machine learning models, especially decision trees.
method Feature partitioning to train robust ensembles and approximate certification methods.
result The proposed ensemble method can resist evasion attacks by a majority of its models.

Surveying strategies for making machine learning models robust against adversarial attacks.

problem Ensuring machine learning models are robust and reliable in real-world applications.
method Taxonomy of adversarial attacks and defenses, Robust Optimization problem formulation, and survey of methods.
result Surveyed recent results in adversarial example generation, defense mechanisms, and formal robustness certificates.

Enhances neural networks' robustness against adversarial samples without sacrificing clean sample generalization.

problem Limited generalization and time complexity of adversarial training.
method Feature Pyramid Decoder (FPD) framework that integrates denoising and image restoration modules into CNNs and constrains the Lipschitz constant.
result FPD-enhanced CNNs achieve sufficient robustness against general adversarial samples on various datasets.

SEAL improves AL on attributed graphs by combining deep learning and adversarial strategies.

problem Efficient AL on attributed graphs with label sparsity issues.
method SEAL framework using adversarial components for graph embedding and semi-supervised discriminator.
result Superior performance improvements over state-of-the-art baselines.

This paper optimizes attacks on stochastic bandits and proposes defenses against them.

problem Optimizing adversarial attacks on stochastic bandit algorithms.
method Designs optimal attack strategies and proposes defense algorithms.
result Optimal attack strategies and defense algorithms achieve near perfect performance.

A new method aggregates generative classifiers to resist adversarial attacks.

problem Adversarial attacks on deep neural networks.
method Rank-aggregating ensemble of generative classifiers trained on intermediate layer responses.
result The ensemble of generative classifiers shows robustness to adversarial attacks.

Paper defends machine learning models from adversarial attacks using GLRT.

problem Adversarial attacks on machine learning models leading to misclassification.
method Generalized likelihood ratio test (GLRT) for robust classification.
result GLRT yields performance competitive with minimax approach under worst-case attacks, and better trade-off under weaker attacks.

Defense strategy improves controller robustness against adversarial attacks.

problem Adversarial attacks on learning-enabled controllers in CPS.
method Two-stage defense strategy treating controller and environment as black-boxes with unknown dynamics.
result Defense strategy effectively improves controller robustness in realistic control domains.

Empirical study on adversarial robustness in transfer learning from CIFAR 100 to CIFAR 10.

problem Evaluating adversarial robustness in transfer learning from CIFAR 100 to CIFAR 10.
method Study of adversarial robustness under transfer learning from a source trained on CIFAR 100 to a target network trained on CIFAR 10, using robust optimisation.
result Using PGD examples during training on the source task leads to more general robust features that are easier to transfer and achieve 5.2% more accuracy against white-box PGD attacks.

This paper introduces defensive dropout to protect deep neural networks from adversarial attacks.

problem Vulnerability of deep neural networks to adversarial attacks.
method Proposes using dropout at test time to enhance robustness, modeling the problem as a game between attacker and defender.
result Defensive dropout reduces adversarial attack success rate significantly, from 100% to 13.89% on MNIST.

Federated learning is vulnerable to model poisoning attacks by a single malicious agent.

problem Vulnerability of federated learning to model poisoning attacks by a single non-colluding agent.
method Exploration of model poisoning attacks, including boosting, alternating minimization, and parameter estimation.
result Even a constrained adversary can successfully carry out model poisoning attacks while maintaining stealth.

The paper examines how to protect LASSO-based feature selection from adversarial attacks.

problem Adversarial attacks on LASSO-based feature selection.
method Formulated as a bi-level optimization problem, reformulated LASSO with linear inequality constraints, solved using interior-point method, and modified using projected gradient descent.
result Demonstrated the effectiveness of the proposed method in protecting LASSO-based feature selection from adversarial attacks.

We study the regret of optimal strategies for online convex optimization games. Using von Neumann's minimax theorem, we show that the optimal regret in this adversarial setting is closely related to the behavior of the empirical minimization algorithm in a stochastic process setting: it is equal to the maximum, over jo…

2009-03-30abs ↗pdf ↗

New betting strategy reduces regret to ln(ln n) with protection against adversarial data.

problem Tackles the problem of minimizing regret in betting against adversarial and stochastic data.
method Combines insights from Robbins and Cover, using a mixture strategy.
result Exhibits a regret of O(ln(ln n)) on almost all paths, with O(log n) regret on the complement.