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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.

168,982 papers · 148 categories

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48 results for correspondence classifier

Proposes a self-supervised method for generating spatial audio from monaural audio and video.

problem Generating spatial audio from monaural audio and video recordings is challenging and expensive.
method Uses a self-supervised network with an auxiliary classifier to classify video channels and generate spatial audio.
result The proposed method effectively generates spatial audio from monaural audio and video.

We determine the extent to which the collection of ΓΓ-Euler-Satake characteristics classify closed 2-orbifolds. In particular, we show that the closed, connected, effective, orientable 2-orbifolds are classified by the collection of ΓΓ-Euler-Satake characteristics corresponding to free or free abelian ΓΓ and are not…

2009-02-12abs ↗pdf ↗

We show that, for generative classifiers, conditional independence corresponds to linear constraints for the induced discrimination functions. Discrimination functions of undirected Markov network classifiers can thus be characterized by sets of linear constraints. These constraints are represented by a second order fi…

2018-11-12abs ↗pdf ↗

We classify all of the 4-dimensional linear Poisson structures of which the corresponding Lie algebras can be considered as the extension by a derivation of 3-dimensional unimodular Lie algebras. The affine Poisson structures on R^3 are totally classified.

2007-07-19abs ↗pdf ↗

The study classifies constant mean curvature surfaces in curved spaces.

problem Classifying constant mean curvature surfaces in curved spaces.
method Analyzes constant mean curvature isometric immersions into S2imesR\mathbb{S}^2 imes \mathbb{R} and H2imesR\mathbb{H}^2 imes \mathbb{R}.
result Provides new classifications of constant mean curvature surfaces in various curved spaces.

J. Boyle classified 1-handles attached to surface-knots, that are closed and connected surfaces embedded in the Euclidean 4-space, in the case that the surfaces are oriented and 1-handles are orientable with respect to the orientations of the surfaces. In that case, the equivalence classes of 1-handles correspond to th…

2014-03-04abs ↗pdf ↗

The paper tackles binary classification with measure data using topological descriptors.

problem Binary classification with measure data.
method Develops classifiers for measure data using topological descriptors (persistence diagrams).
result Upper and lower bounds on the Rademacher complexity of classifiers on measures.

A new method combines simple binary classifiers to build complex multiclass classifiers, achieving performance limits in a Gaussian setting.

problem Building a sophisticated multiclass classifier from simple binary decisions.
method Combining O(logK)O(\log K) simple binary classifiers to form a KK-class classifier.
result Explicit performance bounds across various decoding and dimensional regimes for a stylized Gaussian setting.

Currently, engineers at substation service providers match customer data with the corresponding internally used signal names manually. This paper proposes a machine learning method to automate this process based on substation signal mapping data from a repository of executed projects. To this end, a bagged token classi…

2018-02-13abs ↗pdf ↗

This paper considers the problem of removing costly features from a Bayesian network classifier. We want the classifier to be robust to these changes, and maintain its classification behavior. To this end, we propose a closeness metric between Bayesian classifiers, called the expected classification agreement (ECA). Ou…

2018-05-29abs ↗pdf ↗

Classifies totally geodesic submanifolds and polar actions on Stiefel manifolds.

problem Classifying totally geodesic submanifolds and polar actions on Stiefel manifolds.
method Classification through polar actions and cohomogeneity-one actions.
result Classification of orbits of polar actions on Stiefel manifolds.

We explore the question of whether the representations learned by classifiers can be used to enhance the quality of generative models. Our conjecture is that labels correspond to characteristics of natural data which are most salient to humans: identity in faces, objects in images, and utterances in speech. We propose …

2016-02-09abs ↗pdf ↗

The Nearest subspace classifier (NSS) finds an estimation of the underlying subspace within each class and assigns data points to the class that corresponds to its nearest subspace. This paper mainly studies how well NSS can be generalized to new samples. It is proved that NSS is strongly consistent under certain assum…

2015-01-24abs ↗pdf ↗

A qualgebra GG is a set having two binary operations that satisfy compatibility conditions which are modeled upon a group under conjugation and multiplication. We develop a homology theory for qualgebras and describe a classifying space for it. This space is constructed from GG-colored prisms (products of simplices) …

2017-11-16abs ↗pdf ↗

The infinite matrix `Schwartz' group GG^{-\infty} is a classifying group for odd K-theory and carries Chern classes in each odd dimension, generating the cohomology. These classes are closely related to the Fredholm determinant on G.G^{-\infty}. We show that while the higher (even, Schwartz) loop groups of $G^{-\infty…

2006-06-16abs ↗pdf ↗

Adaptive classifier optimizes high-dimensional data with spiked covariance structure.

problem Classification of high-dimensional data with spiked covariance structure.
method Adaptive classifier that whitens data, screens features, and applies Fisher linear discriminant.
result The classifier is Bayes optimal under certain conditions and performs well on real and synthetic data.

The paper uses geometric methods to classify medical data histograms.

problem Classifying medical data histograms for disease diagnosis.
method Information geometry of beta distributions for comparing and classifying histograms.
result Geometric tools, particularly negatively curved Fisher information, enable unique mean calculation and K-means classification.

Generalizes classifying spaces for topological groups with torsion.

problem Classifying spaces for topological group actions with non-Hausdorff spaces.
method Generalizes Milnor's, Gelfand-Fuks', and Segal's theorems to non-Hausdorff spaces.
result Existence and uniqueness theorems for GG-spaces over metric spaces.

We classify the simple sheaves microsupported along the conormal bundle of a knot. We also establish a correspondence between simple sheaves up to local systems and augmentations, explaining the underlying reason why knot contact homology representations detect augmentations.

2018-05-02abs ↗pdf ↗

The aim of this paper is to classify compact, simply connected Kähler manifolds which admit J-invariant Killing tensor with two eigenvalues of multiplicity 2 and n-2 and with constant eigenvalue corresponding to 2-dimensional eigendistribution.

2017-12-16abs ↗pdf ↗

The paper classifies symmetric triads with multiplicities and their applications.

problem Classifying symmetric triads with multiplicities and their applications.
method Developed the theory of symmetric triads with multiplicities, classified abstract triads, and determined corresponding triads for commutative compact triads.
result Classified symmetric triads with multiplicities and their applications.

A method for learning discontinuous functions using clustering, classification, and regression.

problem Supervised learning with highly nonlinear and discontinuous outputs.
method Three stages: clustering, classification, and separate regression for each class.
result Combining clustering, classification, and regression provides a robust and powerful approach.

Paper presents a method to extract and interpret knowledge from a spiking neural classifier.

problem Extracting and interpreting knowledge from a spiking neural classifier with time-varying synaptic weights.
method The method involves encoding real-valued input data into spike patterns, training the classifier, and mapping the weighted postsynaptic potential to feature strength functions (FSFs).
result The FSFs represent the extracted knowledge from the classifier and can be used for classification and interpretation.

Randomised classifiers outperform deterministic ones in strategic classification.

problem Strategic modification of features by agents in classification tasks.
method Theoretical analysis of randomised classifiers in strategic classification.
result Randomised classifiers can achieve better accuracy than deterministic ones under certain conditions.

Sparse nearest-centroid classifiers detect relevant features for classification.

problem Classifying data with low computational cost and feature selection.
method Proposes 1\ell_1 and 2\ell_2 sparse variants of nearest-centroid classifiers.
result Training sparse classifiers can be done exactly and at quasi-linear cost.

The paper classifies orbits of semisimple elements in real semisimple Lie algebras.

problem Classifying orbits of semisimple elements in real semisimple Lie algebras.
method Case by case analysis of complex numbers and Galois cohomology for real numbers.
result Characterization of orbits with real representatives.

Classifies non-integrable distributions with simple infinite-dimensional Lie superalgebras of symmetries.

problem Classifying non-integrable distributions with specific Lie superalgebras.
method Classification based on locality assumptions and W-grading.
result 15 series and 7 exceptional Lie superalgebras identified over C\mathbb{C}, and analogs over K\mathbb{K} of characteristic p>0p>0.

Study classifies Einstein-Yang-Mills spaces in 4D symmetric spaces.

problem Classifying Lorentzian symmetric spaces with Einstein-Yang-Mills properties.
method Classification based on invariant metric connections and diagonal metrics.
result Four-dimensional symmetric spaces with nontrivial isotropy groups are classified.

New MC simulation methods use classifiers to estimate pdf ratios without explicit pdfs.

problem Estimating ratios of probability density functions (pdfs) without explicit pdfs.
method Proposes classifier-based pdf-free versions of MC simulation algorithms.
result Enables pdf-free simulation algorithms using surrogate functions computed by classifiers.

Study extended Bogomolny equations on curved space with special boundary conditions.

problem Classify solutions to extended Bogomolny equations with gauge group SU(2).
method Relate solutions to holomorphic data via Kobayashi-Hitchin correspondence.
result Completely classify solutions to the extended Bogomolny equations.

In this paper, we propose a novel dynamic ensemble selection framework using meta-learning. The framework is divided into three steps. In the first step, the pool of classifiers is generated from the training data. The second phase is responsible to extract the meta-features and train the meta-classifier. Five distinct…

2018-11-01abs ↗pdf ↗