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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.

169,341 papers · 148 categories

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146292437583 · Jun 202019922001200920182026
48 results for rank effect

The paper tackles fair ranking in ranked data by addressing causal discrimination.

problem Fairness in predictive models for ranked data.
method Mapping rank positions to continuous scores, building causal graphs, and using path-specific effects.
result Effective algorithms for discovering and removing discrimination from ranked datasets.

We find a rank effect in commodity prices that yields higher returns.

problem Understanding the pricing dynamics of commodities over time.
method Nonparametric econometric methods to demonstrate the rank effect as a consequence of stationary relative asset price distribution.
result A portfolio of lower-ranked, lower-priced commodities yields 23% higher annual returns than a portfolio of higher-ranked, higher-priced commodities.

Heteroskedasticity biases uplift model rankings, leading to inefficient treatment allocation.

problem Bias in uplift model rankings due to heteroskedasticity.
method Theoretical analysis and simulation on real-world data.
result Heteroskedasticity can cause individuals with high treatment effects to be ranked at the bottom, leading to inefficient treatment allocation.

This work examines how low-rank weights improve adversarial robustness in neural networks.

problem Improving adversarial robustness in neural networks.
method The study investigates the impact of low-rank structure on adversarial robustness through compression measures.
result Promoting low-rank structure in weight matrices enhances adversarial robustness in neural networks.

LORIS model estimates main and interaction effects in large data frames.

problem Handling large data frames with missing values and explicit modeling of main effects.
method Low-rank interaction and sparse additive effects (LORIS) model with mixed coordinate gradient descent (MCGD).
result LORIS method provides statistical guarantees and converges efficiently for large data sets.

Two-stage risk control for ranked retrieval systems.

problem Assessing prediction uncertainty and risk control in sequential machine learning systems.
method Developed two-stage risk control methods based on LTT and CRC frameworks, leveraging sequential nature of retrieval and ranking phases.
result The proposed methods provide theoretical guarantees and reduce computational burden compared to prior work.

Deep networks learn clean structure before memorizing corrupted labels, leaving a spectral signature in gradient centered scatter.

problem Deep networks' transition from learning clean structure to memorizing corrupted labels under label noise.
method Analysis of the centered scatter of per-example last-layer gradients to identify Fisher Rank Inflation.
result Fisher Rank Inflation is a spectral signature of memorization under label noise, with effective rank expanding during memorization.

The paper extends a proposal for effective twisted superpotentials to higher rank.

problem Describing effective twisted superpotentials from class S theories geometrically.
method Introducing higher rank analogues of spectral networks and spectral coordinates, and finding generating functions.
result The generating functions of the effective twisted superpotentials agree with known results.

Matrix rank minimization problem is in general NP-hard. The nuclear norm is used to substitute the rank function in many recent studies. Nevertheless, the nuclear norm approximation adds all singular values together and the approximation error may depend heavily on the magnitudes of singular values. This might restrict…

2015-10-30abs ↗pdf ↗

Proposes a method to identify subgroup structure and estimate covariate effects for multivariate response data.

problem Identifying subgroup structure and estimating covariate effects in multivariate response data.
method Joint heterogeneity and reduced-rank learning framework using rank-constrained pairwise fusion penalization.
result Established the asymptotic properties of the estimators and proposed a predictive information criterion for rank selection.

A new method trains compact ranking models for recommender systems.

problem Training efficient ranking models for recommender systems.
method Ranking Distillation (RD) technique to train a smaller model with similar performance to a larger teacher model.
result The student model achieves a similar ranking performance to the teacher model with significantly less model size.

Symmetry rank bound for manifolds with positive intermediate Ricci curvature.

problem Bounding the symmetry rank of manifolds with positive intermediate Ricci curvature.
method Local argument and effective isometric action on manifolds.
result Symmetry rank bound rn+k2floorr \leq \lfloor \frac{n+k}{2} floor for positive intermediate Ricci curvature.

Research reveals deep networks often learn low-rank structures, leading to more efficient training and fine-tuning.

problem Efficient training and deployment of large-scale deep learning models.
method Complementary theoretical perspectives on low-rank structures during training and convergence, and practical applications of LoRA and masked training.
result Understanding and exploiting low-rank structures can improve efficiency and effectiveness of training and fine-tuning.

Recovery of low-rank matrices has recently seen significant activity in many areas of science and engineering, motivated by recent theoretical results for exact reconstruction guarantees and interesting practical applications. A number of methods have been developed for this recovery problem. However, a principled meth…

2011-02-25abs ↗pdf ↗

EENMF improves e-commerce sponsored search efficiency and effectiveness.

problem Improving efficiency and effectiveness of e-commerce sponsored search.
method End-to-end neural matching framework (EENMF) for vector-based ad retrieval and neural pre-ranking.
result Significantly outperforms baseline in real e-commerce traffic.

Boosting framework improves Factorization Machines for recommendation systems.

problem Finding informative interactions between features in recommendation systems.
method Adaptive Boosting framework of Factorization Machines (AdaFM) that adaptively searches for proper ranks.
result AdaFM outperforms state-of-the-art Factorization Machines on real-world datasets.

New method estimates heterogeneous treatment effects with improved guarantees.

problem Estimating treatment effects in panel data with heterogeneous assignments.
method Matrix completion approach with row-wise error analysis.
result Achieves a row-wise O~(1n+nm2)\tilde{O}(\sqrt{\frac{1}{n} + \frac{n}{m^2}}) error bound.

Paper proposes unbiased learning for recommendation causal effects.

problem Estimating the causal effect of recommendation when the ground truth is unobservable.
method Inverse propensity scoring technique to construct unbiased estimators, followed by empirical risk minimization with propensity capping.
result The proposed method outperforms other biased learning methods in various settings.

Paper tackles real-world e-commerce search efficiency and user experience.

problem Efficiently rank large-scale e-commerce search results with multiple factors.
method Design and deploy a novel Cascade ranking model in a large-scale operational e-commerce search application.
result Demonstrates the advantage of the proposed model in addressing multiple factors of effectiveness, efficiency, and user experience.

The paper sorts big data by revealed preferences, improving consumer and policy decisions.

problem Sorting diverse consumer preferences for big data objects like colleges.
method Endogenous weighting of revealed preferences, considering spillover effects.
result Consistent steady-state solution to counterbalance equilibrium.

Proposes a method for ranking items across multiple aspects based on user feedback.

problem No principled solution exists for generating multiple item rankings over different aspects.
method Developed a directional multi-aspect ranking criterion using probabilistic multivariate tensor factorization.
result Demonstrated effectiveness of the proposed method through comprehensive experiments on real datasets.

Extends expected value framework for cost-sensitive causal decision-making.

problem Optimizing operational decision-making with cost-sensitive causal classification.
method Introduces a cost-sensitive decision boundary based on estimated individual treatment effects, positive outcome probability, and cost parameters.
result Effective in maximizing expected causal profit, outperforming cost-insensitive ranking approach.

Sparse reduced-rank regression selects variables and ranks via manifold optimization.

problem Traditional rank selection fails when true rank is high.
method Sparse regularization and manifold optimization for rank and variable selection.
result Accurate estimation of coefficient parameter with high true rank.

Study robust recovery of low-rank matrices from corrupted measurements without rank prior.

problem Robust recovery of low-rank matrices from corrupted Gaussian measurements with unknown rank.
method Subgradient method with diminishing stepsizes for nonconvex nonsmooth problem.
result Subgradient method converges to exact low-rank solution at sublinear rate under RDPP condition.

Paper proposes a method for estimating complex low-rank matrices from phase-only measurements.

problem Estimating complex low-rank matrices from magnitude-only measurements.
method A hierarchical prior model with a Gaussian-Wishart distribution is used to promote low-rankness. A variational EM algorithm is developed to solve the problem.
result The proposed method is less sensitive to initialization and performs well with random initialization.

The aim of this paper is to give an upper bound for the dimension of a torus TT which acts on a GKM manifold MM effectively. In order to do that, we introduce a free abelian group of finite rank, denoted by A(Γ,α,)\mathcal{A}(Γ,α,\nabla), from an (abstract) (m,n)(m,n)-type GKM graph (Γ,α,)(Γ,α,\nabla). Here, an (m,n)(m,n)-type GKM …

2015-10-25abs ↗pdf ↗

New method corrects Laplace/BIC errors in singular models, revealing effective dimension.

problem Laplace/BIC errors in singular models due to incorrect effective dimension assumption.
method RLCT (real log canonical threshold) to correct effective dimension in linear models.
result Correct evidence slope and effective dimension estimation in linear settings.

An upper bound is obtained on the rank of a torus which can act smoothly and effectively on a smooth, closed, simply connected, rationally elliptic manifold. In the maximal-rank case, the manifolds admitting such actions are classified up to equivariant rational homotopy type.

2015-11-26abs ↗pdf ↗