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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.

169,181 papers · 148 categories

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48 results for input diversity

Pantypes improve prototypical models by capturing diverse input distributions.

problem Prototypical models lack sufficient data representation in low density regions.
method Introducing pantypes, a sparse set of diverse objects to represent the full diversity of input distribution.
result Pantypes empower prototypical models to foster high diversity, interpretability, and fairness.

This work generates diverse adversarial attacks for different domains using latent variable perturbation.

problem Adversarial attacks on deep neural networks are limited to a single perturbation.
method Frame adversarial attacks as learning a distribution of perturbations, enabling generation of diverse attacks.
result Framework generates competitive or superior adversarial attacks across diverse domains (images, text, graphs).

MOD improves ensemble-based uncertainty estimates by encouraging larger diversity.

problem Improving model uncertainty estimates for inputs not seen during training.
method Maximize Overall Diversity (MOD) approach to encourage larger diversity in ensemble predictions.
result Significantly improves predictive performance for out-of-distribution test examples.

New methods improve uncertainty explanations for models.

problem Improving interpretation of uncertainty estimates from probabilistic models.
method Developed new methods to generate diverse and global explanations for uncertain model predictions.
result Generated diverse and global explanations for uncertain model predictions, addressing previous limitations.

FoRDE uses input gradients to improve neural network ensembles.

problem Improving neural network ensembles for robustness and accuracy.
method Proposes FoRDE, an ensemble learning method based on ParVI, which repels function space by input gradients.
result FoRDE significantly outperforms DEs and other ensemble methods in accuracy and calibration.

Graph Metanetworks process diverse neural architectures efficiently.

problem Processing diverse neural architectures efficiently.
method Builds metanetworks using graph neural networks to process graphs representing input neural networks.
result Proves GMNs are expressive and equivariant to parameter permutation symmetries.

MODEF combines denoising and verification to defend against adversarial attacks.

problem Vulnerability of deep neural networks to adversarial inputs.
method Cross-layer model diversity ensemble combining unsupervised denoising and supervised verification.
result MODEF achieves remarkable defense success rates against black-box attacks.

Improved RL for grasping in cluttered scenes using state representation learning.

problem Poor performance of RL methods in grasping diverse objects from raw images.
method Employed state representation learning (SRL) with disentanglement of raw input images.
result Deep RL can learn grasping skills from varied visual inputs.

DEN learns diverse tasks to generalize to unseen tasks.

problem Generalization from a diverse set of classification tasks with limited data.
method Three-block architecture: covariate transformation, distribution embedding, and classification.
result DEN outperforms existing methods in various synthetic and real tasks.

DiwE uses regional distribution changes to create diverse ensemble classifiers for concept drift.

problem Handling concept drift in evolving data streams.
method DiwE measures diversity based on regional distribution disagreement and uses it to weight instances and select classifiers.
result DiwE outperforms other algorithms on various synthetic and real-world data stream benchmarks.

The paper tackles fair and diverse data summarization using DPPs.

problem Tackles bias in data summarization methods.
method Uses determinantal measures of diversity and corresponding distributions (DPPs) to incorporate fairness constraints.
result Developed a fast sampler for constrained determinantal distributions that is provably good under certain conditions.

Proposes a method to generate diverse translations by conditioning on target domain.

problem NMT models lack diversity in translations, even with search algorithms.
method Condition the decoder on a latent variable representing target domain, generated by a target encoder.
result Generated diverse translations without affecting performance or training time.

The paper clusters hypergraphs to find diverse and experienced groups based on past experiences.

problem Finding diverse and experienced groups with respect to past experiences.
method Regularized edge-based hypergraph clustering objective with a 2-approximation algorithm.
result Demonstrates an efficient 2-approximation algorithm for clustering hypergraphs.

The paper tackles ambiguous image-to-image translation by modeling a distribution of possible outputs.

problem Ambiguity in image-to-image translation where a single input can have multiple possible outputs.
method The approach involves a conditional generative model that learns to map input images to a latent vector, which is then used to generate diverse outputs.
result The method produces more diverse and realistic outputs compared to other variants.

The paper teaches a reinforcement learning agent to generate diverse programs based on symbolic instructions.

problem Learning to generate diverse programs for diverse scenes given a symbolic instruction.
method Instruction-conditioned reinforced adversarial learning.
result The agent's stochastic policy more accurately captures the diversity in the goal distribution.

The paper analyzes how guidance affects diffusion models using Gaussian mixture models.

problem Understanding how guidance influences diffusion models in specific contexts.
method Theoretical study using Gaussian mixture models and comparison inequalities for differential equations.
result Guidance boosts classification confidence but reduces distribution diversity, leading to lower differential entropy.

A new method optimises problems with both continuous and categorical inputs.

problem Optimising black-box problems with mixed continuous and categorical inputs.
method Continuous and Categorical Bayesian Optimisation (CoCaBO) combining multi-armed bandits and Bayesian optimisation.
result CoCaBO outperforms existing methods on synthetic and real-world tasks.

ODS improves adversarial attacks by maximizing output diversity.

problem Efficiency and effectiveness of adversarial attacks, especially black-box attacks.
method Output Diversified Sampling (ODS) that maximizes diversity in model outputs.
result ODS reduces the number of queries needed for black-box attacks on ImageNet by a factor of two.

Deep learning models converge to Gaussian dynamics with mixed structured inputs.

problem Understanding neural network dynamics with complex input distributions.
method Extended hidden manifold model to Gaussian mixtures, analyzed via SGD.
result Learning dynamics with mixed inputs converge to Gaussian behavior.

Unified framework for portfolio optimization using multiple hypotheses.

problem Risk diversification in portfolio allocation.
method Structured ensemble learning approach with diversity control.
result Structured ensembles link predictor diversity to risk diversification.

Proposes training neural networks to predict uncertainty for out-of-distribution inputs.

problem Poor uncertainty predictions for out-of-distribution inputs limit model robustness.
method Generates pseudo-inputs in low-density regions and trains a Bayesian framework.
result Yields robust and interpretable uncertainty predictions.

Proposes DC3-GAN for diverse unsupervised conditional generation.

problem Low diversity in unsupervised conditional generation.
method Integrates encoder-generator pair with generator-encoder pair to enhance diversity.
result Improves clustering performance and disentanglement of latent variables.

Study forecasts monthly electricity demand using pattern similarity-based methods.

problem Forecasting monthly electricity demand accurately.
method Pattern similarity-based forecasting methods (PSFMs) including k-NN, fuzzy, kernel regression, and GRNN.
result Ensemble models outperform individual PSFMs in forecasting accuracy.

Paper introduces a new model to handle multi-task learning across different input domains.

problem Learning correlated tasks across varying input domains.
method Develops a novel heterogeneous stochastic variational linear model of coregionalization (HSVLMC) for multi-task learning.
result The proposed model outperforms existing models in diverse multi-task scenarios.

The study provides precise asymptotic theory for in-context learning by Transformers.

problem Understanding the sample complexity, pretraining task diversity, and context length for successful in-context learning.
method An exactly solvable model of linear regression task by linear attention, deriving sharp asymptotics.
result Double-descent learning curve with increasing pretraining examples, phase transition between low and high task diversity regimes.

Despite recent advances, large scale visual artifacts are still a common occurrence in images generated by GANs. Previous work has focused on improving the generator's capability to accurately imitate the data distribution pdatap_{data}. In this paper, we instead explore methods that enable GANs to actively avoid errors b…

2017-07-03abs ↗pdf ↗

Proposes MOC method for better counterfactual explanations in ML models.

problem Difficulties in balancing multiple objectives for counterfactual explanations.
method Translates counterfactual search into a multi-objective optimization problem.
result Returns diverse counterfactuals with different trade-offs and maintains feature diversity.

Two new ALR approaches based on GS reduce labeled samples needed for regression.

problem Need substantial labeled samples for regression models, but unlabeled samples are easy to collect.
method Proposes two new ALR approaches based on greedy sampling (GS) to select beneficial unlabeled samples.
result Extensive experiments on various datasets verified the effectiveness and robustness of the approaches.

New method designs joint initial noises for diffusion models to improve diversity and alignment.

problem Independent initial noises limit diversity in generated images.
method Coupling of initial noises, maintaining Gaussian distribution while allowing dependence.
result Repulsive Gaussian coupling improves diversity without increasing sampling cost.