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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.

168,695 papers · 148 categories

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84167251334 · Jun 202019922001200920172026
48 results for Dimension constraints

Additive Gaussian process framework handles monotonicity constraints in high dimensions.

problem Handling monotonicity constraints in high-dimensional data.
method Additive Gaussian process framework with MaxMod algorithm for dimension reduction.
result Framework enables to satisfy monotonicity constraints everywhere in the input space.

Sharp dimension constraints for positive intermediate curvature metrics are established.

problem Proving sharp dimension constraints for metrics with positive intermediate curvature.
method Constructing counterexamples and extending rigidity results.
result Sharp dimension constraints for positive intermediate curvature metrics are established.

Adapts Bartnik method to Hilbert manifold structure for vacuum constraint equations.

problem Vacuum constraint equations on compact manifolds of any dimension ≥ 3.
method Adapts Bartnik method to provide Hilbert manifold structure.
result Fibers of scalar curvature and constraint operator are Hilbert submanifolds.

The paper analyzes constrained optimal portfolios in high dimensions using novel statistical learning techniques.

problem Forming optimal portfolios with constraints in high-dimensional asset spaces.
method CROWN method integrating factor models with nodewise regression for estimation in large dimensions.
result Demonstrates estimation consistency and convergence rates for constrained portfolio weights, risk, and Sharpe Ratio.

Paper shows affine constraint is unnecessary for high-dimensional data.

problem The necessity of an affine constraint in affine subspace clustering.
method Theoretical and empirical analysis of conditions for correctness of affine subspace clustering methods.
result Affine constraint has negligible effect on clustering performance for high-dimensional data.

In this note we show that the Lagrangian Luttinger surgery preserves the symplectic Kodaira dimension. Some constraints on Lagrangian tori in symplectic four manifolds with non-positive Kodaira dimension are also derived.

2011-08-02abs ↗pdf ↗

For certain manifolds, nonnegative Ricci curvature limits dimension and forces almost abelian fundamental group.

problem Bounding the dimension of manifolds with nonnegative Ricci curvature and specific fundamental group properties.
method Dimensional estimates for RCD(0,N)\mathrm{RCD}(0,N) spaces with large Hausdorff dimension.
result If dimension is less than 12, the fundamental group is almost abelian.

In 5D, integrability is linked to curvature constraints of subconformal structures.

problem Dispersionless integrability in 5D partial differential equations.
method Relating integrability to curvature constraints of subconformal structures.
result In 5D, integrability is characterized by the vanishing of a certain curvature of the subconformal structure.

Study on harmonic maps from surfaces to homogeneous spaces, focusing on bubble formation and geometric constraints.

problem Understanding the behavior of harmonic maps from surfaces to homogeneous spaces, especially in the presence of bubbles.
method Refined asymptotic expansions and obstruction relations for sequences developing a single bubble, geometric constraints for weakly conformal maps.
result New geometric constraints on the tangent planes of the limit map and bubble, depending on the dimensionality.

The paper studies the properties of maps with free boundaries, focusing on the obstacle case.

problem Properties of the projected image and its regularity in maps with free boundaries.
method Dividing the map into distance and projected image parts; applying classical obstacle problem methods and proving higher regularity for the projected image.
result The projected image is at most of class C2,1C^{2,1} and globally of class W3,BMOW^{3,BMO}, locally of C2,1C^{2,1} around the regular part of the free boundary.

VFlow enhances generative flows by augmenting data dimensions for better expressiveness.

problem Tractable generative flows have limited expressiveness due to fixed intermediate dimensions.
method Augment data with extra dimensions and learn a generative flow for both original and augmented data using variational inference.
result VFlow achieves state-of-the-art performance on CIFAR-10 with improved compactness.

Study contextual bandits with stage-wise constraints, proving regret bounds and extending results.

problem Contextual bandits with stage-wise constraints in high probability and expectation settings.
method Upper-confidence bound algorithms for linear and non-linear reward/cost functions, extending to multiple constraints.
result Regret bounds for various settings, including non-linear reward/cost functions.

The paper explores curvature constraints on Kodaira dimension for specific almost Hermitian manifolds.

problem Investigating Riemannian curvature constraints on the Kodaira dimension of compact almost Hermitian manifolds.
method Analyzing compact almost Hermitian manifolds in the Gray-Hervella class and Hermitian manifolds with nonnegative scalar curvature.
result For compact almost Hermitian manifolds with nonnegative scalar curvature, the Kodaira dimension is either -∞ or 0, with specific conditions.

Study circle actions on manifolds with 3 fixed points, finding dimension constraints and unique structures.

problem Characterize circle actions on oriented manifolds with exactly 3 fixed points.
method Analyzes manifold dimensions, isotropy submanifolds, and uses quaternionic projective space as a reference.
result For a manifold with three fixed points, its dimension must be a multiple of 4, and specific weights are unique.

Bayesian optimization improves with transfer learning for aircraft design.

problem Cold start problem in Bayesian optimization for aircraft design.
method Ensemble of surrogate models using transfer learning in a constrained Bayesian optimization framework.
result Significant improvement in convergence and prediction accuracy.

Intersectional constraints improve selection outcomes by reducing inequality.

problem Persistent inequality and reduced utility in selection processes due to implicit bias.
method Introducing intersectional constraints to mitigate the adverse effects of implicit bias in selection processes.
result Intersectional constraints can recover almost all the utility achievable in the absence of implicit bias, offering a significant advantage over non-intersectional constraints.

We break dimension dependence in sparse distribution estimation with communication constraints.

problem Estimating sparse distributions with limited communication.
method Novel localization schemes and tree-based estimation.
result Achieve dimension-free convergence rate independent of dimension dd.

Unified physics-informed learning method improves generalization performance.

problem Lack of theoretical analysis for hybrid settings with incomplete physical constraints.
method Unified residual form unifying collocation and variational methods, establishing generalization performance governed by affine variety dimension.
result Generalization performance is determined by affine variety dimension, not just the number of parameters.

Estimation in generalized linear models (GLM) is complicated by the presence of constraints. One can handle constraints by maximizing a penalized log-likelihood. Penalties such as the lasso are effective in high dimensions, but often lead to unwanted shrinkage. This paper explores instead penalizing the squared distanc…

2017-11-03abs ↗pdf ↗

We consider the problem of noisy 1-bit matrix completion under an exact rank constraint on the true underlying matrix MM^*. Instead of observing a subset of the noisy continuous-valued entries of a matrix MM^*, we observe a subset of noisy 1-bit (or binary) measurements generated according to a probabilistic model. W…

2015-02-24abs ↗pdf ↗

Extends Dirac structures to infinite dimensions for mechanical systems.

problem Adapting finite-dimensional Dirac structures to infinite-dimensional settings.
method Introduces partial Dirac structures and applies variational techniques to constraint Lagrangians on subbundles and singular distributions.
result Characterizes normal geodesics for conical Finsler metrics on Banach manifolds.

Estimates box dimension of fractal interpolation surfaces using oscillation vectors.

problem Estimating the complexity of fractal interpolation surfaces.
method Defined vertical scaling matrices and used them to relate oscillation vectors of different levels.
result Obtained the box dimension of generalized affine fractal interpolation surfaces.

Two new methods solve large-scale stochastic convex problems with linear constraints.

problem Solving large-scale stochastic convex optimization problems with many linear constraints.
method Conditional gradient-based methods that process only a subset of constraints at each iteration.
result Rigorous convergence guarantees for the proposed methods.

Study shows dimension constraints for isometry groups in non-collapsed Riemannian manifolds.

problem Dimension constraints for isometry groups in non-collapsed Riemannian manifolds.
method Equivariant Gromov--Hausdorff convergence and lower Ricci curvature bounds.
result Dimension of isometry group is at least the limit superior of dimensions of subgroups.

Superconformal geometries discussed in various spacetime dimensions using local supertwistor bundles.

problem Discussing superconformal geometries in different spacetime dimensions.
method Using local supertwistor bundles over standard superspace, showing gauges where scale parts of the connection and curvature vanish, and imposing constraints to reduce field numbers.
result Reduced field numbers to those of minimal off-shell conformal supergravity multiplets by imposing constraints.

The paper extends localisation technique to multiple constraints in Euclidean spaces.

problem Proving log-concavity of conditional measures in decomposed convex sets.
method Defining partitions of maximal closed convex sets and proving log-concavity of conditional measures.
result Existence of a partition and log-concavity of conditional measures for almost every set of the partition.

Pluriclosed flow preserves Hermitian-symplectic structures and forms, with topological constraints.

problem Preserving Hermitian-symplectic structures under pluriclosed flow.
method Consideration of an extra evolution equation determined by the Bismut-Ricci form.
result Obtained topological obstruction to long-time existence in arbitrary dimensions.

LCBO tackles constrained optimization in high dimensions, offering a polynomial convergence rate.

problem Bayesian optimization for high-dimensional constrained problems.
method LCBO uses local descent and uncertainty-driven exploration, proving polynomial convergence rate.
result LCBO achieves a polynomial convergence rate for KKT residuals in high dimensions.

Proper regularization is critical for speeding up training, improving generalization performance, and learning compact models that are cost efficient. We propose and analyze regularized gradient descent algorithms for learning shallow neural networks. Our framework is general and covers weight-sharing (convolutional ne…

2018-02-05abs ↗pdf ↗

Bayesian network models with latent variables are widely used in statistics and machine learning. In this paper we provide a complete algebraic characterization of Bayesian network models with latent variables when the observed variables are discrete and no assumption is made about the state-space of the latent variabl…

2015-01-09abs ↗pdf ↗

This paper deals with the super-replication of non path-dependent European claims under additional convex constraints on the number of shares held in the portfolio. The corresponding super-replication price of a given claim has been widely studied in the literature and its terminal value, which dominates the claim of i…

2013-07-23abs ↗pdf ↗

Local Linear embedding (LLE) is a popular dimension reduction method. In this paper, we first show LLE with nonnegative constraint is equivalent to the widely used Laplacian embedding. We further propose to iterate the two steps in LLE repeatedly to improve the results. Thirdly, we relax the kNN constraint of LLE and p…

2012-06-27abs ↗pdf ↗