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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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171342512683 · Jun 202019922001200920182026
48 results for Probably Approximately Correct (PAC) clusterability

Paper analyzes conditions for clustering BMMs with unknown clusters.

problem Clustering Bernoulli Mixture Models (BMMs) with unknown number of clusters.
method Theoretical analysis of sample complexity and dimensionality for PAC-clusterability.
result First non-asymptotic bounds on sample complexity for learning or clustering BMMs.

New algorithm FLUTE achieves uniform-PAC convergence in RL with linear approx.

problem RL with linear function approximation lacks uniform-PAC guarantees.
method FLUTE algorithm with minimax value function estimator and multi-level partition scheme.
result Uniform-PAC convergence to optimal policy with high probability.

Large language models can't efficiently reason conditionally in a distribution-free setting.

problem Impossibility of conditional PAC-efficient reasoning in large language models.
method Proof of impossibility in a distribution-free setting for non-atomic input spaces.
result Any algorithm achieving conditional PAC efficiency must defer to the expert model with high probability.

Develops a theory to make learning solutions fair and safe.

problem Ensuring learning solutions are unbiased and safe in critical applications.
method Generates a generalization theory based on PAC learning framework, introduces constrained learning algorithm.
result Proves that constrained learning is as learnable as unconstrained learning, provides practical algorithm.

Paper tackles one-bit compressed sensing using PAC learning theory.

problem One-bit compressed sensing problem.
method Formulated as PAC learning problem, uses VC-dimension and PAC learning theory.
result Consistent algorithm can recover kk-sparse vectors with O(klg(n/k))O(k \lg (n/k)) measurements.

Meta-learning bounds derived using PAC-Bayes theory for improved generalization.

problem Uncertainty in generalization performance for meta-learning with new tasks.
method PAC-Bayes relative entropy bounds and empirical risk minimization (ERM) method.
result Competitive generalization performance and rapid convergence with data-dependent prior.

The study analyzes group testing algorithms for identifying defective items with high confidence.

problem Identifying defective items from a population using group testing with high confidence.
method Formulated as a function learning problem using the PAC framework, analyzed three algorithms: column matching, combinatorial basis pursuit, and definite defectives.
result Derived bounds on the number of tests needed for approximate set identification, comparing with existing bounds and simulating performance.

Paper bounds PAC RL sample complexity in deterministic MDPs.

problem Identify ε-optimal policy with high probability.
method Proposes nearly matching upper and lower bounds on sample complexity, introduces deterministic return gap, uses graph-theoretical concepts and maximum-coverage exploration.
result First nearly matching upper and lower bounds on sample complexity for PAC RL in deterministic MDPs.

A new model clusters multi-faceted data with uncertainty quantification.

problem Uncertainty in multi-view clustering of high-dimensional data.
method Approximate Bayes approach, treating similarity matrices as rough estimates, refining with low-rank matrix.
result Each simplex coordinate encodes cluster assignment uncertainty.

Data-dependent PAC-Bayes priors via differential privacy improve generalization bounds.

problem Creating valid generalization bounds for unknown data distributions.
method Using ε-differential privacy to construct data-dependent priors, leading to valid PAC-Bayes bounds.
result Data-dependent priors via differential privacy yield nonvacuous generalization bounds.

New algorithms achieve uniform-PAC guarantees for RL with bounded eluder dimension.

problem Achieving strong performance guarantees in reinforcement learning.
method Proposes algorithms for nonlinear bandits and model-based episodic RL with a bounded eluder dimension.
result Achieves uniform-PAC sample complexity that matches state-of-the-art regret bounds or sample complexity guarantees.

Bayesian priors offer a compact yet general means of incorporating domain knowledge into many learning tasks. The correctness of the Bayesian analysis and inference, however, largely depends on accuracy and correctness of these priors. PAC-Bayesian methods overcome this problem by providing bounds that hold regardless …

2012-02-14abs ↗pdf ↗

The paper improves off-policy evaluation in contextual bandits using conformal prediction.

problem Quantifying the performance of a target policy using data from a different behavior policy.
method Proposes a novel algorithm based on a PAC-valid conformal prediction framework to construct probably approximately correct prediction intervals.
result Establishes PAC-type bounds on coverage, improving theoretical guarantees.

We introduce a technique to compute probably approximately correct (PAC) bounds on precision and recall for matching algorithms. The bounds require some verified matches, but those matches may be used to develop the algorithms. The bounds can be applied to network reconciliation or entity resolution algorithms, which i…

2014-10-31abs ↗pdf ↗

The paper improves confidence ellipsoids for ridge regression with PAC bounds.

problem Uncertainty quantification in ridge regression for insufficiently exciting inputs.
method Extension of SPS EOA algorithm to ridge regression with PAC bounds.
result Explicitly shows how regularization parameter affects region sizes and provides tighter bounds.

New bounds using samplewise evaluated CMI for deep neural networks.

problem Improving generalization bounds for deep neural networks.
method Introduced a new family of information-theoretic generalization bounds using samplewise evaluated conditional mutual information (CMI).
result The new bounds can be tighter than previous ones for deep neural networks.

Efficient algorithms learn non-binary concepts from random counter-examples.

problem Learning non-binary concepts from random counter-examples efficiently.
method Two simple LRC algorithms: deterministic and randomized.
result Both algorithms achieve optimal average learning time of O(log|H|).

A new framework for robustness analysis of deep neural networks using PAC-model learning.

problem Analyzing local robustness of deep neural networks.
method Black-box model learning with scenario optimisation to abstract DNN behaviour via an affine model with PAC guarantee.
result DeepPAC outperforms state-of-the-art statistical methods in practical robustness analysis.

The paper optimizes identifying top kk arms from a fraction of ρρ arms in stochastic bandits.

problem Identifying kk distinct arms among the top ρρ fraction of arms in stochastic bandits with a PAC tolerance.
method The paper considers two cases: known and unknown threshold of top arms' expected rewards. It proves lower bounds and proposes algorithms for each case, showing sample complexity optimality for two algorithms.
result Two algorithms are sample complexity optimal (up to constant factors) and the other two are optimal up to a log factor.

Proposes a new approach to regression learning that addresses overfitting and underfitting.

problem Regression learning issues, including overfitting and underfitting.
method Introduces epsilon-Confidence Approximately Correct (epsilon CoAC) framework using Kullback Leibler divergence.
result Demonstrates improved learnability and accuracy compared to cross-validation.

The paper explores how machine learning models can be learnable despite label shifts.

problem Learnability of binary classification models in the presence of label shifts.
method Developed a performative empirical risk function that is an unbiased estimate of the true risk on the shifted distribution.
result PAC-learnable hypothesis spaces remain PAC-learnable for performative scenarios.

Theorem ensures superior learning outcomes for authorized learners with quantum label encoding.

problem Ensuring data security for authorized learners in machine learning.
method Quantum label encoding and PAC learning framework.
result Authorized learners achieve superior learning outcomes while eavesdroppers do not.

The paper studies ranking algorithms from pairwise and listwise comparisons, deriving lower bounds and optimal algorithms.

problem Designing efficient ranking algorithms from pairwise and listwise comparisons.
method Deriving lower bounds and proposing optimal algorithms for top-k and total ranking problems.
result The proposed algorithms match the derived lower bounds and are optimal up to a logarithmic factor.

The paper bridges theory and practice in query-driven selectivity learning.

problem Insufficient theoretical understanding of query-driven selectivity learning.
method Demonstrates learnability of selectivity predictors and establishes favorable OOD generalization error bounds.
result Theoretical advances improve OOD generalization of query-driven selectivity models.

Study shows transductive learning is equivalent to PAC learning for most natural loss functions.

problem Understanding the relationship between transductive and PAC learning models.
method Extending existing results and developing new techniques to analyze the equivalence of the two models.
result Transductive learning is essentially equivalent to PAC learning for realizable learning with most natural loss functions.