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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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118236354472 · Jun 202019922001200920182026
48 results for complex hypotheses

Boosting combines weak hypotheses to create accurate predictions under bounded VC dimension.

problem How to combine weak hypotheses to achieve accurate predictions efficiently.
method Designing a novel boosting algorithm with complex aggregation rules for bounded VC dimension classes.
result The new boosting algorithm requires fewer weak hypotheses than classical lower bounds, provided they belong to a bounded VC class.

Machine Learning benefits from prior information and computational power for better performance and understanding.

problem Improper use of Machine Learning methods leads to lack of understanding and performance issues.
method Employing prior information and computational power to solve learning problems, emphasizing interpretability and performance.
result Combining prior information and computational power can lead to better understanding and performance in Machine Learning.

Paper develops a consistent model selection framework for learning Hypotheses Space from data.

problem Avoiding overfitting in complex spaces with limited data.
method Develops a model selection framework based on Learning Spaces, selecting a Hypotheses Space from data.
result The method converges with probability one to a target Hypotheses Space, providing a consistent framework for model selection.

Proposes PHD to measure domain discrepancy for complex models.

problem Insufficient domain discrepancy measures for complex models.
method Introduces PHD, a novel discrepancy measure for complex models.
result PHD is computationally efficient and applicable to multi-class classification.

Optimal private tests for simple hypotheses are characterized.

problem Private testing of simple hypotheses under differential privacy constraints.
method Characterization of sample complexity and optimal tests using log-likelihood ratio tests.
result Optimal sample complexity achieved by a specific randomized and clamped variant of the log-likelihood ratio test.

The paper analyzes adversarial robustness for linear models and neural networks using Rademacher complexity.

problem Understanding adversarial robustness of linear models and neural networks.
method The paper uses Rademacher complexity to provide upper and lower bounds for adversarial robustness of linear hypotheses and neural networks.
result The paper provides bounds on adversarial Rademacher complexity for linear hypotheses and neural networks, offering a finer analysis of input dimensionality.

Optimal observation selection for complex hidden hypotheses.

problem Diagnosis of complex hidden hypotheses using limited observations.
method Active diagnosis through selection of most informative observations based on past results.
result An implication model that predicts future outcomes based on past observations, selecting the most informative next observation.

The paper introduces a data-adaptive method for high-dimensional hypothesis testing.

problem Simultaneous testing of thousands of null hypotheses in high-dimensional settings.
method Data mining techniques to screen covariates, create average ranks, and reduce the set of hypotheses.
result Valid statistical inference achieved without specifying which hypotheses will be tested.

Unified method for MMD variance estimation improves accuracy and computational efficiency.

problem Variance estimation for MMD in nonparametric testing.
method Unified finite-sample characterization of MMD variance through U-statistic and Hoeffding decomposition; exact acceleration method for univariate case.
result Unified estimators improve accuracy and computational efficiency for MMD variance.

We information-theoretically reformulate two measures of capacity from statistical learning theory: empirical VC-entropy and empirical Rademacher complexity. We show these capacity measures count the number of hypotheses about a dataset that a learning algorithm falsifies when it finds the classifier in its repertoire …

2011-11-23abs ↗pdf ↗

We consider the fundamental question of learnability of a hypotheses class in the supervised learning setting and in the general learning setting introduced by Vladimir Vapnik. We survey classic results characterizing learnability in term of suitable notions of complexity, as well as more recent results that establish …

2013-03-24abs ↗pdf ↗

This paper investigates the problem of determining a binary-valued function through a sequence of strategically selected queries. The focus is an algorithm called Generalized Binary Search (GBS). GBS is a well-known greedy algorithm for determining a binary-valued function through a sequence of strategically selected q…

2009-10-22abs ↗pdf ↗

We show that a homotopy equivalence between manifolds induces a correspondence between their spin^c-structures, even in the presence of 2-torsion. This is proved by generalizing spin^c-structures to Poincare complexes. A procedure is given for explicitly computing the correspondence under reasonable hypotheses.

1997-05-09abs ↗pdf ↗

The paper introduces stability of learning algorithms and bounds their generalization error.

problem Understanding and bounding the generalization error of learning algorithms.
method Introduces argument stability and uses martingale inequalities in Banach spaces.
result Bounds the generalization error of learning algorithms in terms of their argument stability.

Paper tackles efficient learning of non-convex hypotheses in metric spaces.

problem Efficiently find consistent hypotheses for non-convex hypotheses composed of possibly several disconnected regions.
method Proposes a general domain-independent algorithm for finding consistent weakly convex hypotheses and proves sufficient conditions for its efficiency.
result Shows that consistent hypothesis finding problem can be solved in polynomial time for a broad class of weakly convex hypotheses over metric spaces.

We prove an exponential estimate for the asymptotics of Bergman kernels of a positive line bundle under hypotheses of bounded geometry. We give further Bergman kernel proofs of complex geometry results, such as separation of points, existence of local coordinates and holomorphic convexity by sections of positive line b…

2013-10-14abs ↗pdf ↗

The article introduces gamma-Psi-dimensions for margin multi-category classifiers.

problem Margin multi-category classifiers' generalization performance under minimal learnability hypotheses.
method Derives gamma-Psi-dimensions, handles capacity measures, and establishes upper bounds on metric entropies and Rademacher complexity.
result Gamma-Psi-dimensions improve over fat-shattering dimension and offer a promising alternative for multi-class to binary transitions.

Stable planes are locally isomorphic to classical projective planes.

problem Characterizing stable planes that are locally isomorphic to classical projective planes.
method Analyzing properties of stable planes and comparing them to classical projective planes over specific fields.
result Simply connected stable planes with connected lines are isomorphic to open subplanes of classical projective planes.

DivDis learns diverse hypotheses from underspecified data to improve robustness.

problem Learning from underspecified datasets leads to multiple equally viable solutions, causing out-of-distribution issues.
method DivDis framework: 1) learns diverse hypotheses using unlabeled test data, 2) selects one hypothesis with minimal additional supervision.
result DivDis finds robust features in image and natural language processing problems.

New method uses LLMs to generate detailed scientific hypotheses.

problem Generating detailed, actionable scientific hypotheses from coarse initial directions.
method Hierarchical search method that incrementally adds details to hypotheses.
result Hierarchical search method consistently outperforms strong baselines on expert-annotated hypotheses.

In many practical applications of multiple hypothesis testing using the False Discovery Rate (FDR), the given hypotheses can be naturally partitioned into groups, and one may not only want to control the number of false discoveries (wrongly rejected null hypotheses), but also the number of falsely discovered groups of …

2015-12-10abs ↗pdf ↗

Sequential tests for nonparametric hypotheses using supermartingales.

problem Designing valid sequential tests for nonparametric null hypotheses.
method Using elicitable and identifiable functionals, nonnegative supermartingales, and Online Convex Optimization.
result Rigorous guarantees on asymptotic power for a wide range of alternative hypotheses.

Study examines how network architecture handles increasing data complexity.

problem Understanding how network architecture affects performance with complex data.
method Empirical study comparing various network architectures on an image classification task with increasing class numbers.
result Modern architectures show better generalization performance with increasing data complexity.

Hypothesis testing in singular models is fundamentally about identifiable vs. non-identifiable parameters.

problem Testing in singular models is inherently problematic due to non-identifiability and degeneracy of Fisher information.
method Formalized the overlap obstruction and showed that hypotheses over non-identifiable parameters are untestable, while those over identifiable parameters reduce to classical testing.
result Hypotheses over non-identifiable parameters are untestable, while those over identifiable parameters reduce to classical testing.

Analyzes the complexity of linear hypothesis sets using Rademacher complexity.

problem Understanding the complexity of linear hypothesis sets for various norms.
method Tight analysis of empirical Rademacher complexity for linear hypothesis classes with bounded weights.
result Improved bounds on Rademacher complexity for linear hypothesis sets, matching or improving existing results.

Method generates multiple 3D poses from 2D joint detections, addressing ambiguity and uncertainty.

problem Ambiguity and uncertainty in 3D human pose estimation from 2D joint detections.
method Generative model, compositional, anatomical constraints, removing model bias.
result Generates multiple valid 3D poses consistent with 2D joint detections.

The paper analyzes different neural network architectures for 3D point cloud processing.

problem Understanding the effects of specific intermediate-layer network architectures on 3D point cloud processing.
method Designing five metrics to diagnose various types of DNNs and conducting comparative studies.
result The hypotheses on the effects of specific intermediate-layer network architectures on the representation capacity of DNNs are verified.

The paper proves vanishing theorems for complex line bundles using a new adiabatic limit approach.

problem Vanishing theorems for complex line bundles under specific conditions.
method Generalizes adiabatic limit construction to connections on complex line bundles, proving vanishing theorems.
result Proves vanishing theorems for DD''-cohomology groups under certain conditions.

s-RBFN integrates multiple hypotheses for efficient and diverse prediction.

problem Integrating multiple hypotheses into learning models for regression.
method Structured Radial Basis Function Network (s-RBFN) using Voronoi tessellations and least-squares training.
result s-RBFN achieves superior generalization and efficiency compared to other models.

DP-SPRT improves privacy in sequential tests with near-optimal error rates.

problem Privacy constraints in sequential probability ratio tests.
method A wrapper for SPRT that uses a private mechanism to determine when to stop based on predefined intervals.
result DP-SPRT achieves near-optimal error rates and privacy guarantees.

Near-optimal private tests for simple and MLR hypotheses developed under Gaussian differential privacy.

problem Developing private tests for simple and MLR hypotheses under Gaussian differential privacy.
method A private mean estimator with data-driven clamping bounds, constructing private test statistics.
result Private tests achieve the same asymptotic relative efficiency as non-private most powerful tests.

Crowdsourcing generated useful hypotheses for predicting residential energy usage.

problem Predicting residential electric energy usage using crowdsourced data.
method Crowdsourced questions and answers were used to build a predictive model of monthly electric energy consumption.
result The crowd can generate useful hypotheses for predicting energy usage, even with sparse data.

Unified algorithm for incorporating various prior knowledge in multiple testing.

problem Improving power and precision in multiple testing procedures with prior knowledge.
method p-filter algorithm that incorporates four types of prior knowledge: null hypotheses, penalties, groups, and independence.
result Unified framework allows for recovery of various known algorithms.

Confirmation bias leads to biased estimates in noisy data analysis.

problem Confirmation bias affects scientific conclusions in noisy data environments.
method Investigation of confirmation bias in Gaussian mixture models using K-means and EM algorithms.
result Estimates from algorithms are biased and resemble initial hypotheses, not the noise.

Study finds solutions for complex problems on non-compact manifolds.

problem Solving fully nonlinear Yamabe-type problems on non-compact manifolds.
method Existence results for a class of problems, considering both positive and negative cases.
result Explicit examples of manifolds satisfying the hypotheses of the theorems.