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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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Introduces info intervention to handle causal questions and check counterfactual variables.

problem Controversial interpretation of causal questions for non-manipulable variables and lack of power to check counterfactual variables.
method Intervenes input/output information of causal mechanisms, providing causal diagrams for communication and theoretical focus.
result Causal diagrams based on info intervention provide a new perspective on information transfer as causality.

We present an information-theoretic framework for sequential adaptive compressed sensing, Info-Greedy Sensing, where measurements are chosen to maximize the extracted information conditioned on the previous measurements. We show that the widely used bisection approach is Info-Greedy for a family of kk-sparse signals b…

2014-07-02abs ↗pdf ↗

Deep RL model learns 2.5D fighting games with height ambiguity.

problem Ambiguity in character height/depth and sequential action orders in 2.5D fighting games.
method Modified A3C network with Recurrent Info network for combo skill observation.
result Successfully learned and played Little Fighter 2 (LF2) 2.5D fighting game.

New matrix reveals cluster info in sparse directed graphs.

problem Analyzing cluster information in directed graphs.
method Proposed complex non-backtracking matrix integrating Hermitian adjacency matrix and non-backtracking matrix properties.
result The complex non-backtracking matrix holds cluster information, especially for sparse directed graphs.

We characterize the performance of sequential information guided sensing, Info-Greedy Sensing, when there is a mismatch between the true signal model and the assumed model, which may be a sample estimate. In particular, we consider a setup where the signal is low-rank Gaussian and the measurements are taken in the dire…

2015-01-26abs ↗pdf ↗

HybridSVD combines user and item info for efficient, flexible recommendations.

problem Lack of effective methods for incorporating both user and item side information in collaborative filtering.
method Hybrid algorithm using PureSVD with generalized singular value decomposition and cold start solution.
result Superior performance compared to similar hybrid models on various datasets.

Rating Prediction is a basic problem in Recommender System, and one of the most widely used method is Factorization Machines(FM). However, traditional matrix factorization methods fail to utilize the benefit of implicit feedback, which has been proved to be important in Rating Prediction problem. In this work, we consi…

2014-10-29abs ↗pdf ↗

Bayesian truth discovery uses social network info to improve reliability estimates.

problem Truth discovery from unreliable or biased agents with correlated biases in the same community.
method Laplace variational inference and stochastic variational inference for large networks.
result Our methods outperform other inference methods in sparse observation scenarios.

Estimates non-parametric logistic model using case-control data and external summary info.

problem Imbalanced binary data in case-control studies.
method Two-step estimation procedure with deep neural network for functional approximation.
result Proposed estimator achieves optimal convergence rate in non-parametric regression.

VTrackIt creates a synthetic dataset with infrastructure and vehicle info for AVs.

problem Lack of infrastructure and pooled vehicle info in existing AV datasets.
method Developed VTrackIt, a synthetic dataset with intelligent infrastructure and pooled vehicle info, and introduced InfraGAN for trajectory predictions.
result VTrackIt reduces high-risk edge cases in AV trajectory predictions.

Enhances network embedding with auxiliary info using matrix factorization.

problem Lack of flexible incorporation of auxiliary info (content and labels) in network embedding.
method Explicit matrix factorization incorporating structure, content, and label info.
result Unified framework for learning network embedding with structure, content, and label info.

MFAI uses gradient boosted trees to leverage auxiliary info for scalable Bayesian matrix factorization.

problem Matrix factorization struggles with poor data quality, especially high sparsity and low SNR.
method Integrates gradient boosted trees into probabilistic matrix factorization framework.
result MFAI effectively leverages auxiliary information, improving model performance.

Improved semantic segmentation accuracy by addressing class imbalance.

problem Class imbalance in training data leads to misclassification of rare classes.
method Localized weighting of posterior class probabilities with pixel-wise priors.
result Significant improvement in recall and reduction of non-detection rate for rare classes.

Bayesian optimization with binary auxiliary info for faster target function optimization.

problem Optimizing target functions with expensive binary auxiliary information.
method Mixed-type Gaussian process (MOGP) and information-based acquisition functions (MT-ES, MT-PES).
result Efficient approximation of mixed-type predictive ES via random features.

New method controls linear systems with partial info and disturbances.

problem Controlling linear dynamical systems under partial observation and adversarial disturbances.
method Double Spectral Control (DSC) using two-level spectral approximation strategy.
result Matches best known regret guarantees with exponential runtime improvement.

MLM models match or exceed RN in generating wind power time series without location info.

problem Generating accurate long-term wind power time series without location information.
method Applied neural networks to MERRA2 wind speed data with and without location info.
result MLM models produce time series of equal or better quality than RN.

New method uses mutual info and network science to explain deep learning models.

problem Interpreting deep neural networks for understanding their decision-making process.
method Coupling mutual information with network science to quantify information flow in deep learning models.
result Proposed NIF technique for codifying information flow in deep learning models.

MO-GP models fill gaps in biophysical data with across-domain info transfer.

problem Gap filling of biophysical parameters LAI and fAPAR over rice areas.
method Multi-output Gaussian Processes (MO-GP) based on Linear Model of Coregionalization (LMC).
result MO-GP models successfully predict biophysical variables even in high missing data regimes.

System separates sounds from mixtures without ground truth info.

problem Sound separation from multi-channel mixtures without labeled data.
method Deep clustering on multi-channel mixtures, projecting bins to spatially correlated clusters.
result Performance matches ground truth separation using only multi-channel mixtures.

PLUS pre-trains protein sequences with structural info, improving performance.

problem Lack of labeled protein sequences for training models.
method PLUS combines masked language modeling with same-family prediction for pre-training.
result PLUS-RNN outperforms other models in protein biology tasks.

Improved GANs model geological facies with diversity and unbiased distribution.

problem Generating unbiased and representative geological models from training images.
method Info-WGAN combining InfoGAN, Wasserstein distance, and Gradient Penalty.
result Generated samples have equal probability distribution as training data.

Nucleosome positioning is an important process required for proper genome packing and its accessibility to execute the genetic program in a cell-specific, timely manner. In the recent years hundreds of papers have been devoted to the bioinformatics, physics and biology of nucleosome positioning. The purpose of this rev…

2015-08-27abs ↗pdf ↗

Paper proposes method to recover quantized data with missing info.

problem Recovering quantized data with missing information.
method Regularized convex cost function with Bi-factorization and Augmented Lagrangian Method.
result The method finds global minimizer of the cost function.

Inequalities linking entropy, Fisher info, Stein discrepancy, and Wasserstein distance on Riemannian manifolds.

problem Linking entropy, Fisher info, Stein discrepancy, and Wasserstein distance on Riemannian manifolds.
method Deriving inequalities linking these measures on Riemannian manifolds.
result Strengthening and extending existing inequalities to Riemannian manifolds.

Optimistic algorithms and Thompson sampling use info-theory for better reinforcement learning.

problem Designing algorithms that balance exploration and exploitation in reinforcement learning.
method Integrating information-theoretic concepts into optimistic algorithms and Thompson sampling.
result Cumulative regret bound depends on uncertainty and quantifies prior information value.

Proposes a robust VIB approach using soft labels and mutual info estimation.

problem Improving robustness of VIB to adversarial perturbations.
method Refines categorical class information with soft labels from a reference network, relaxes Gaussian posterior assumption.
result Significantly outperforms benchmarked models on MNIST and CIFAR-10.