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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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48 results for natural relations

AI helps assess nature-related financial risks for financial institutions.

problem Challenges in evaluating nature-related risks due to large data volume and complexity.
method Uses AI to address data gaps, uncertainty, and complex systems.
result Potential AI solutions for two use cases: beef supply and water utility.

Proposes SVR-based image denoising using natural image relations.

problem Image denoising with arbitrary noise sources.
method Support Vector Regression (SVR) in wavelet domain, enforcing natural image relations.
result Outperforms conventional methods and is similar to state-of-the-art methods for Gaussian noise.

The Jacobi identity is the key relation in the definition of a Lie algebra. In the last decade, it also appeared at the heart of the theory of finite type invariants of knots, links and 3-manifolds (and is there called the IHX-relation). In addition, this relation was recently found to arise naturally in a theory of em…

2004-01-30abs ↗pdf ↗

Researchers solve word2vec's Corpus Replication Task to understand relational word similarities.

problem Understanding how word2vec captures relational similarities in word embeddings.
method Propose a Corpus Replication Task to generate input text for word2vec that outputs specific target relations.
result Demonstrates that word2vec can capture relational similarities in word embeddings.

Natural gradient simplification for deep learning networks.

problem Efficiency in training deep Bayesian networks.
method Analysis of two geometries of Fisher information matrix and development of a method to simplify natural gradient for the second geometry.
result A method to simplify natural gradient for deep networks using an auxiliary recognition model.

Phone sensors detect gait changes during drinking episodes.

problem Detecting gait changes in heavy drinkers during natural drinking occasions.
method Used phone sensors to collect gait data, computed features, and trained an artificial neural network model.
result Phone sensor features correlate highly with estimated blood alcohol concentration (eBAC).

ExpBERT uses natural language explanations to improve text interpretation.

problem Improving text interpretation for relation extraction tasks.
method Fine-tuning BERT on MultiNLI to interpret natural language explanations.
result ExpBERT matches a BERT baseline but requires less labeled data and improves performance.

Paper discusses natural quasiconvexity and its relation to decomposable sums in risk measures.

problem Understanding natural quasiconvexity and its implications in risk measures.
method Relates natural quasiconvexity to decomposable sums, proposes a general treatment of convexity index, and proves equivalence for certain spaces.
result Natural quasiconvexity and convexity are equivalent for conditional risk measures on LpL^p spaces under mild conditions.

Study examines cyber losses across sectors, finds high severity and frequency.

problem Understanding the nature of cyber losses and their variability across sectors.
method Analysis of a leading industry dataset of cyber events, focusing on frequency and severity.
result Cyber risks are heavy-tailed, with high probability of extreme losses.

We explore a Pluecker-type relation which occurs naturally in the study of maximally supersymmetric solutions of certain supergravity theories. This relation generalises at the same time the classical Pluecker relation and the Jacobi identity for a metric Lie algebra and coincides with the Jacobi identity of a metric n…

2002-11-11abs ↗pdf ↗

In this note we clarify the relation between extended world-sheet supersymmetry and generalized complex structure. The analysis is based on the phase space description of a wide class of sigma models. We point out the natural isomorphism between the group of orthogonal automorphisms of the Courant bracket and the group…

2005-02-15abs ↗pdf ↗

Study on curvature measures in non-Euclidean spaces linked to Euclidean geometry.

problem Investigating curvature measures in spherical, hyperbolic, and de Sitter spaces.
method Establishing a unifying framework for curvature measures in real-analytic spaces of constant curvature.
result Floating bodies and duality in non-Euclidean spaces are connected to curvature measures in Euclidean space.

The paper explores the pentagon relation and its algebraic forms.

problem Exploring the pentagon relation and its various forms.
method Starting with geometric form, then algebraic form as a family of equations, deriving equivalent forms using 6j-symbols, and extracting solutions from modular categories.
result Extracting a solution of the pentagon relation from any modular category.

Study on properties and transformations of Weingarten surfaces in 3D space.

problem Characterize Weingarten surfaces and their transformations.
method Analyzes Weingarten relations from three perspectives: umbilic points, SL2(R) transformations, and variational formulations.
result Established bounds on the slope of Weingarten relations at umbilic points and showed transitivity of the action on semi-quadratic Weingarten surfaces.

We develop the natural tractor calculi associated to conformal and CR structures as a fundamental tool for the study of Fefferman's construction of a canonical conformal class on the total space of a circle bundle over a non--degenerate CR manifold of hypersurface type. In particular we construct and treat the basic ob…

2006-11-30abs ↗pdf ↗

Study quantifies firm risks from nature decline, showing significant equity losses.

problem Estimating the financial impact of nature deterioration on companies.
method Developed metrics (Country Degradation Index, Nature Risk Score) and assessed five environmental hazards.
result Global equities lose 26.8% in a nature decline scenario, with worst firms losing 75%.

Framework uses proxy variables to detect causal relations between static entities.

problem Estimating cause-effect relations between static entities like art pieces and their copies.
method Introduces proxy variables to transform static entities into random variables, then applies observational causal discovery.
result Framework successfully detects 75% of causal relations in a human-elicited dataset of words.

ABCD system uses Gaussian Processes to describe time-series data.

problem Creating natural-language descriptions of time-series data using Gaussian Processes.
method Relational kernel learning methods for multiple time-series data sets.
result Relational kernel learning methods find more accurate models for regression problems.

We introduce and study the notion of a biholomorphic gerbe with connection. The biholomorphic gerbe provides a natural geometrical framework for generalized Kahler geometry in a manner analogous to the way a holomorphic line bundle is related to Kahler geometry. The relation between the gerbe and the generalized Kahler…

2008-11-21abs ↗pdf ↗

Griffiths extremal metrics solve complex Finsler equations and quantify Kähler geometry.

problem Interpolation of norms and complex Finsler geometry.
method Introduced Griffiths extremal Finsler metrics and solved their Dirichlet problem.
result Griffiths extremal Finsler metrics quantize solutions to a PDE in Kähler geometry.

The purpose of this paper is to describe certain natural 4-vector fields on quaternionic flag manifolds, which geometrically determine the Bruhat cell decomposition. This structure naturally descends from the symplectic group, where it is related to the dressing action given by the Iwasawa decomposition of the general …

2001-04-09abs ↗pdf ↗

These notes are the first chapter of a monograph, dedicated to a detailed proof of the equivariant index theorem for transversally elliptic operators. In this preliminary chapter, we prove a certain number of natural relations in equivariant cohomology. These relations include the Thom isomorphism in equivariant cohomo…

2007-11-25abs ↗pdf ↗

Study compares hypergraph and graph-level models for higher-order relational learning.

problem Evaluating effectiveness of hypergraph-level vs. graph-level models in relational learning.
method Systematic evaluation of various hypergraph and graph-level architectures.
result Graph-level models applied to hypergraph expansions outperform hypergraph-level models.

Natural analogs of Lie brackets on affine bundles are studied, based on natural examples from differential geometry and analytical mechanics. In particular, a close relation to Lie algebroids and, by a sort of duality, to affine analogs of Poisson structures is established as well as affine versions of the complete lif…

2002-03-12abs ↗pdf ↗

Study vector fields preserving Liouville form, classifying them and their bifurcations.

problem Classifying vector fields preserving Liouville form and understanding their bifurcations.
method Classification of univariate functions, local models, contact equivalence.
result Local models and bifurcations of vector fields preserved by Liouville form.

Paper proves naturally reductive property is inaudible for certain manifolds.

problem Proving naturally reductive property is inaudible for specific manifolds.
method Using a pair of non-compact 11-dimensional generalized Heisenberg groups, the paper proves the naturally reductive property is inaudible.
result The naturally reductive property is inaudible for certain manifolds.

Studying the M-branes leads us naturally to new structures that we call Membrane-, Membrane^c-, String^K(Z,3)- and Fivebrane^K(Z,4)-structures, which we show can also have twisted counterparts. We study some of their basic properties, highlight analogies with structures associated with lower levels of the Whitehead tow…

2010-08-10abs ↗pdf ↗