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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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138276414552 · Jun 202019922001200920172026
48 results for Collaborative Sampling

PCL tackles collaborative learning for diverse agents, reducing sample complexity.

problem Balancing collaborative speedup with personalization for heterogeneous agents.
method AffPCL, with bias and importance correction mechanisms.
result AffPCL reduces sample complexity by a factor of max{n1,δ}\max\{n^{-1}, δ\}, where nn is the number of agents and δ[0,1]δ\in[0,1] measures heterogeneity.

We study a recent model of collaborative PAC learning where kk players with kk different tasks collaborate to learn a single classifier that works for all tasks. Previous work showed that when there is a classifier that has very small error on all tasks, there is a collaborative algorithm that finds a single classifi…

2018-05-22abs ↗pdf ↗

Optimizes resource allocation for distributed parameter estimation in sensor networks.

problem Maximizing accuracy in parameter estimation with limited resources.
method Formulates a data collection and collaboration policy design problem as a Fisher information maximization problem. Proposes multi-armed bandit algorithms for learning the optimal policy.
result Identifies optimal data collection and collaboration policies that balance resource use and estimation accuracy.

New method for collaborative learning with multiple distributions, minimizing sample size.

problem Learning accurate classifiers for multiple data distributions without a single universal classifier.
method Empirical Risk Minimization (ERM) on a modified hypothesis class, with computational hardness results.
result Sample-efficient learning is possible under a weaker realizability assumption.

Study on collaboration vs. independent data collection in sensor networks.

problem Impact of sensor correlation on data collection strategies.
method Analysis of Fisher information and Cramer-Rao bound.
result Optimal strategy involves transferring non-immediate information for improved estimation.

Experiment shows cognitive biases impact human-AI collaboration, highlighting the need for diverse evaluator samples.

problem Cognitive biases affect human-AI collaboration, leading to suboptimal outcomes.
method Randomized experiment with 2,784 participants, manipulating AI suggestion quality, task burden, and financial incentives.
result Individual attitudes toward AI are the strongest predictor of performance, influencing accuracy and overcorrection.

Optimal algorithm found for collaborative learning in bandits with optimal regret bounds.

problem Minimizing regret in collaborative multi-agent bandit problems.
method Proposed an algorithm with optimal regret bounds for collaborative multi-agent multi-armed bandit model.
result First algorithm with order optimal regret bounds for collaborative bandit model.

The data torrent unleashed by current and upcoming astronomical surveys demands scalable analysis methods. Many machine learning approaches scale well, but separating the instrument measurement from the physical effects of interest, dealing with variable errors, and deriving parameter uncertainties is often an after-th…

2017-07-14abs ↗pdf ↗

We study the collaborative PAC learning problem recently proposed in Blum et al.~\cite{BHPQ17}, in which we have kk players and they want to learn a target function collaboratively, such that the learned function approximates the target function well on all players' distributions simultaneously. The quality of the col…

2018-05-23abs ↗pdf ↗

Method transfers knowledge between partially labeled domains to classify all samples.

problem Weakly supervised open-set domain adaptation between partially labeled domains.
method Collaborative Distribution Alignment (CDA) method for bilaterally knowledge transfer and outlier identification.
result Achieves state-of-the-art performance on Office benchmark and person reidentification.

A framework for collaborative learning reduces communication rounds.

problem Collaborative learning with distributed features and privacy concerns.
method Federated Stochastic Block Coordinate Descent (FedBCD) algorithm.
result The algorithm achieves O(T)O(\sqrt{T}) communication rounds and O(1/T)O(1/\sqrt{T}) accuracy.

This work advances collaborative decision making by combining human and AI strengths in uncertainty quantification.

problem Current AI lacks robust decision-making capabilities under uncertainty, especially in high-stakes contexts.
method Introduces Human AI Collaborative Uncertainty Quantification (HACUQ) framework, formalizing AI-human collaboration and developing calibration algorithms.
result Optimal collaborative prediction sets follow a two-threshold structure, and online adaptation algorithms can adapt to evolving human behavior.

Backdoor attacks are possible in feature-partitioned collaborative learning, even without labels.

problem Backdoor attacks in feature-partitioned collaborative learning.
method Demonstrated the feasibility of backdoor attacks and introduced defense techniques.
result Backdoor attacks can be blocked without significantly affecting main task accuracy.

A federated learning framework improves RUL prognosis for aircraft engines without sharing data.

problem Limited run-to-failure data samples for accurate RUL prognosis.
method Federated learning framework, decentralized validation, and robust aggregation methods.
result The federated learning framework leads to more accurate RUL prognosis for five out of six airlines.

FedLCB-Q learns optimal policies from federated offline data with linear speedup.

problem Learning optimal policies from offline data with federated learning.
method Federated offline RL algorithm tailored for Q-learning, using local Q-function updates and central aggregation.
result Achieves linear speedup in sample complexity with collaboration among agents.

The bane of one-class collaborative filtering is interpreting and modelling the latent signal from the missing class. In this paper we present a novel Bayesian generative model for implicit collaborative filtering. It forms a core component of the Xbox Live architecture, and unlike previous approaches, delineates the o…

2013-09-26abs ↗pdf ↗

This paper improves collaborative filtering by integrating user and item embeddings with attention.

problem Sparse ratings and limited robustness of Bayesian methods in collaborative filtering.
method Proposes a VAE-based Bayesian MF framework that leverages both data and embedding information.
result The proposed method enhances robustness and accuracy of collaborative filtering models.

ARCO-BO optimizes multi-agent design under heterogeneity, improving efficiency and performance.

problem Heterogeneous multi-agent optimization challenges in resource use and information sharing.
method ARCO-BO integrates a consensus mechanism, budget-aware sampling, and partial input sharing for heterogeneous design spaces.
result ARCO-BO outperforms independent and collaborative BO methods in complex multi-agent settings.

Proposes TFCL to mitigate negative transfer in MTL by collaborating across features and tasks.

problem Negative transfer in Multi-Task Learning (MTL) due to dissimilar tasks.
method Task-Feature Collaborative Learning (TFCL) with heterogeneous block-diagonal structure regularizer and optimization method.
result Global convergence and block-diagonal structure recovery guarantees.

Split learning improves deep learning in healthcare by sharing data.

problem Data scarcity in healthcare limits deep learning applications.
method Distributed learning approach for collaborative training of deep neural networks.
result Split learning outperformed non-collaborative methods in both binary and multi-label classification tasks.

New collaborative algorithm improves personalized mean estimation in online settings.

problem Online estimation of means from multiple, possibly overlapping distributions.
method Novel collaborative strategy for active querying and mean estimation.
result Algorithm improves mean estimates through communication among agents.

A new KD model for collaborative filtering improves top-N recommendation performance.

problem Challenges in applying KD to recommender models due to feedback sparsity and ambiguity.
method Proposes a new KD model (CD) for collaborative filtering, reformulating a loss function, using probabilistic rank-aware sampling, and developing training strategies.
result Outperforms state-of-the-art methods by 2.7-33.2% in hit rate (HR) and 2.7-29.1% in NDCG.

Rating prediction is an important application, and a popular research topic in collaborative filtering. However, both the validity of learning algorithms, and the validity of standard testing procedures rest on the assumption that missing ratings are missing at random (MAR). In this paper we present the results of a us…

2012-06-20abs ↗pdf ↗

Algorithm estimates tensors from sparse observations with robust error bounds.

problem Estimating tensors from sparse noisy observations.
method Similarity-based collaborative filtering algorithm for tensor estimation.
result Achieves sample complexity nearly matching conjectured lower bound.

Supply Chain Management often requires independent organizations to work together to achieve shared objectives. This collaboration is necessary when coordinated actions benefit the group more than the uncoordinated efforts of individual firms. Despite the commonly reported benefits that can be gained in close relations…

2016-10-10abs ↗pdf ↗

Study addresses covariate mismatch in federated learning, improving model accuracy.

problem Learning from clients with different feature sets in federated learning.
method Developed two approaches for linear prediction under covariate mismatch: plug-in estimator and impute-then-regress strategy.
result Proposed methods provide asymptotic and finite-sample learning rates, improving model accuracy.

New algorithm reduces multi-agent bandit regret by sharing data.

problem Designing efficient collaboration between multi-agent linear bandits.
method Bandit Adaptive Sample Sharing (BASS) algorithm, without assumptions on bandit parameters structure.
result Validated through theoretical analysis and empirical evaluations, BASS outperforms current state-of-the-art.

Drone optimizes collaborative learning for neural networks.

problem Training a shared neural network with heterogeneous data from multiple devices.
method Drone collects and aggregates model parameters from devices, optimizing trajectory for best accuracy.
result Significant improvement in final accuracy and speedup in training time.

A model for collaborative learning with principal-agent interaction.

problem Optimizing parameter estimates in a collaborative learning setting.
method Decision-theoretic model with aggregation coefficients and Langevin dynamics.
result Advantages in stability and generalization due to cooperative behavior.

Study collaborative learning among multi-agents in multi-armed bandits.

problem Minimizing group cumulative regret in a heterogeneous multi-agent setting.
method Developed decentralized algorithms for collaboration between NN agents learning MM stochastic multi-armed bandits.
result Proved near-optimal behavior of proposed algorithms for group regret.