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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.

169,051 papers · 148 categories

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255075100 · Jun 202019922001200920182026
48 results for binary composition

We study losses for binary classification and class probability estimation and extend the understanding of them from margin losses to general composite losses which are the composition of a proper loss with a link function. We characterise when margin losses can be proper composite losses, explicitly show how to determ…

2009-12-17abs ↗pdf ↗

We introduce the hierarchical compositional network (HCN), a directed generative model able to discover and disentangle, without supervision, the building blocks of a set of binary images. The building blocks are binary features defined hierarchically as a composition of some of the features in the layer immediately be…

2016-11-07abs ↗pdf ↗

Learning compact and interpretable representations is a very natural task, which has not been solved satisfactorily even for simple binary datasets. In this paper, we review various ways of composing experts for binary data and argue that competitive forms of interaction are best suited to learn low-dimensional represe…

2014-12-11abs ↗pdf ↗

In this paper, we propose a compositional nonparametric method in which a model is expressed as a labeled binary tree of 2k+12k+1 nodes, where each node is either a summation, a multiplication, or the application of one of the qq basis functions to one of the pp covariates. We show that in order to recover a labeled bi…

2017-04-06abs ↗pdf ↗

Paper proposes HTAF for stable training of binary neural networks.

problem Challenges in training binary neural networks with gradient-based optimization.
method HTAF is a smooth approximation to the Heaviside function that enables stable training.
result HTAF enables stable training of various binary neural networks with gradient-based optimization.

Paper improves gas species identification in complex mixtures using neural networks.

problem Identifying gas species in multi-gas mixtures with high accuracy.
method Multi-label neural networks with optimal thresholding for IR spectroscopy.
result Optimal thresholding improves classification performance over conventional methods.

Efficient binarized algorithm detects seizures from iEEG with one-shot learning.

problem Detecting seizures from iEEG data efficiently and accurately.
method Combines local binary patterns with hyperdimensional computing for end-to-end binary operations.
result Algorithm learns from one or two seizures and generalizes on 27 further seizures.

This work improves task specification learning from demonstrations using maximum causal entropy.

problem Lack of guarantees for safe task composition and historical dependencies in learning from demonstrations.
method Adapting maximum causal entropy inverse reinforcement learning to estimate task specifications using reduced ordered binary decision diagrams.
result Polynomial time algorithm for estimating task specifications from demonstrations.

New method for causal inference with complex treatment compositions.

problem Estimating causal effects with compositional treatments.
method Kernel-based covariate functional balancing approach.
result Achieves n\sqrt{n}-consistency without requiring consistent estimation of weights.

The paper constructs new algebraic structures from Lie algebras and ternary Nambu-Lie algebras, leading to Yang-Baxter operators.

problem Constructing new algebraic structures from Lie algebras and ternary Nambu-Lie algebras.
method Using compositions of binary Lie algebras, 3-Lie algebras, and ternary Nambu-Lie algebras, the paper constructs ternary self-distributive objects and Yang-Baxter operators.
result The constructed Yang-Baxter operators are not gauge equivalent to the transposition operator and can be deformed to new solutions.

PolyILR: A Tree-Structured Orthonormal Decomposition of Compositional Data

problem Representing compositional data with hierarchical structure
method PolyILR: A canonical orthonormal decomposition of the Aitchison tangent space aligned with any tree topology
result PolyILR yields stable, interpretable features and enables inference at multiscale tree resolution

Study develops efficient algorithm for probabilistic penetration response of composite plates.

problem Probabilistic modeling of discrete structural response, focusing on binary events like buckling.
method Adaptive domain-based decomposition, sparse grid sampling, assumption of monotonic behavior.
result Efficient computational framework for probabilistic penetration response of composite plates.

Geometric analysis of ROC and PR curves for binary classification.

problem Understanding classifier behavior and selection of optimal operating points.
method Geometric perspective on ROC and PR curves, focusing on the composition function GG.
result Many binary classification metrics are functions of G=FpFn1G = F_p \circ F_n^{-1}, facilitating better classifier optimization.

The goal of online prediction with expert advice is to find a decision strategy which will perform almost as well as the best expert in a given pool of experts, on any sequence of outcomes. This problem has been widely studied and O(T)O(\sqrt{T}) and O(logT)O(\log{T}) regret bounds can be achieved for convex losses (\cite{zin…

2018-05-20abs ↗pdf ↗

Knowledge base (KB) completion adds new facts to a KB by making inferences from existing facts, for example by inferring with high likelihood nationality(X,Y) from bornIn(X,Y). Most previous methods infer simple one-hop relational synonyms like this, or use as evidence a multi-hop relational path treated as an atomic f…

2015-04-24abs ↗pdf ↗

Novel oracle-type inequality for logistic loss in DNNs achieves sharp convergence rates.

problem Generalization analysis for binary classification with DNNs and logistic loss.
method Established an oracle-type inequality to handle the boundedness of the target function.
result Optimal convergence rates for fully connected ReLU DNN classifiers trained with logistic loss.

The paper categorizes and analyzes various event-linked perpetual futures contracts.

problem Developing a risk-design framework for complex event-linked perpetual futures.
method Formal taxonomy of seven pure-form canonical variants, organized along four design axes.
result Detailed analysis of microstructure properties and limitations of various variants.

This research tackles group fairness in predictive process monitoring by ensuring predictions are independent of sensitive group membership.

problem Predictive models using biased historical data can perpetuate unfair behavior in new cases.
method Investigates independence through metrics like ΔDP and a composite loss function balancing predictive performance and fairness.
result Proposes and validates a composite loss function for training models that balance fairness and performance.

In statistical relational learning, the link prediction problem is key to automatically understand the structure of large knowledge bases. As in previous studies, we propose to solve this problem through latent factorization. However, here we make use of complex valued embeddings. The composition of complex embeddings …

2016-06-20abs ↗pdf ↗

Deep neural networks achieve optimal classification rates in high dimensions.

problem Binary classification on high-dimensional data with specific smoothness and composition properties.
method Proved optimal convergence rate for ReLU DNNs trained with hinge loss.
result ReLU DNNs achieve optimal classification rates up to a logarithmic factor.

This work is an analytical and numerical study of the composition of several fractals into one and of the relation between the composite dimension and the dimensions of the component fractals. In the case of composition of standard IFS with segments of equal size, the composite dimension can be expressed as a function …

2014-07-10abs ↗pdf ↗

Kernel-based learning predicts ICU escalation from COVID-19 chest X-rays.

problem Predicting ICU escalation from chest X-rays using complex data patterns.
method Generalized Linear Models with Integrated Multiple Additive Regression with Kernels (GLIMARK).
result GLIMARK effectively predicts ICU escalation from chest X-rays.

New geometric approach for analyzing compositional data like gut microbiomes.

problem Analyzing non-negative compositional data with relative values only.
method Reinterpret compositional data as quotient topology of a sphere, using spherical harmonics and reflection group actions.
result Construction of Reproducing Kernel Hilbert Space (RKHS) for compositional data.

Study on deep neural networks using branching processes and Mehler's formula.

problem Understanding the mathematical role of activation functions in compositional neural networks.
method Connection between compositional kernels and branching processes via Mehler's formula; new random features algorithm.
result Explicit formulas for eigenvalues of compositional kernels quantify complexity.

We establish conditions for compositional generalization in machine learning.

problem Achieving compositional generalization in machine learning models.
method We reformulate compositionality as a property of the data-generating process and derive mild conditions on the training distribution and model architecture.
result Our theoretical framework enables compositional generalization under mild conditions.

Develops methods for causal inference in compositional data using instrumental variables.

problem Interpreting summary statistics like diversity indices as causal effects in compositional data.
method Statistical data transformations and regression techniques tailored for compositional data.
result Advantages and limitations of the proposed methods demonstrated on synthetic and real microbiome data.

In classical field theory, the composite fibred manifolds Y -> Z -> X provides the adequate mathematical formulation of gauge models with broken symmetries, e.g., the gauge gravitation theory. This work is devoted to connections on composite fibred manifolds. In particular, we get the horizontal splitting of the vertic…

1994-12-17abs ↗pdf ↗

The p-index improves investment performance for NYSE stocks but not for SSE stocks.

problem Improving investment performance for stocks using the p-index.
method Comparing different p-ratio strategies and empirical efficient frontiers for SSE and NYSE stocks.
result The p-index enhances investment performance for NYSE stocks but not for SSE stocks.

Model predicts composite structures assembly quality with input uncertainty.

problem Accurate prediction of dimensional deviations and residual stress in composite structures assembly.
method Neural Network Gaussian Process considering input uncertainty.
result NNGPIU model outperforms other methods for nonsmooth, nonlinear responses.

New algorithm reduces complexity for optimizing complex machine learning tasks.

problem Optimizing complex machine learning objectives like reinforcement learning and portfolio management.
method Developed SARAH-Compositional algorithm using Stochastic Recursive Gradient Descent.
result Achieved optimal IFO complexity bounds for stochastic compositional optimization.

This paper introduces compositional data analysis for financial ratios, improving industry-level analysis.

problem Statistical issues with standard financial ratios at industry level.
method Compositional data analysis techniques for financial ratios.
result Improved analysis of financial ratios using compositional data methods.

Study challenges neural models in compositional learning tasks.

problem Challenges in neural models for compositional and relational learning.
method Introduced ConceptWorld environment for generating images from compositional concepts, tested various neural architectures.
result Neural models struggle with longer compositional chains and substitutivity tests.

SCL discovers compositional structures in analogical reasoning tasks.

problem Discovering compositional structures in analogical reasoning tasks like Raven's Progressive Matrices.
method Proposes Scattering Compositional Learner (SCL) that composes neural networks in sequence.
result Achieves state-of-the-art performance on RPM datasets with significant improvements.

Paper develops momentum schemes with variance reduction for non-convex composition optimization.

problem Lack of convergence guarantee and efficient momentum design in existing algorithms.
method Develops various momentum schemes with SPIDER-based variance reduction.
result Achieves near-optimal sample complexity and linear convergence rate.