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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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186372558744 · Jun 202019922001200920172026
48 results for Machine Accuracy

Cancer analysis and prediction is the utmost important research field for well-being of humankind. The Cancer data are analyzed and predicted using machine learning algorithms. Most of the researcher claims the accuracy of the predicted results within 99%. However, we show that machine learning algorithms can easily pr…

2019-03-17abs ↗pdf ↗

Study examines how imputation accuracy affects prediction accuracy in regression problems with missing covariates.

problem Missing covariates in regression or classification problems.
method Simulation and empirical analysis using UCI datasets and statistical inference.
result Imputation accuracy impacts prediction accuracy, especially with Machine Learning methods.

This paper proves long-time accuracy of ensemble Kalman filters for chaotic and machine-learned systems.

problem Ensuring long-term accuracy of ensemble Kalman filters for complex dynamical systems.
method Established conditions for long-time accuracy of ensemble Kalman filters for chaotic and machine-learned dynamical systems.
result Ensemble Kalman filters maintain small estimation error over long time horizons for chaotic and machine-learned systems.

Machine learning qualifies computers to assimilate with data, without being solely programmed [1, 2]. Machine learning can be classified as supervised and unsupervised learning. In supervised learning, computers learn an objective that portrays an input to an output hinged on training input-output pairs [3]. Most effic…

2018-09-17abs ↗pdf ↗

FanG-HPO optimizes machine learning models for fairness and low energy consumption.

problem Bias in machine learning models and high energy consumption in hyperparameter optimization.
method Combines multi-objective and multiple information source Bayesian optimization.
result FanG-HPO identifies fair and energy-efficient machine learning models.

SML improves pancreatic mass diagnosis accuracy using CT images.

problem Improving accuracy in pancreatic mass screening using CT imaging.
method Spectral machine learning method trained on 30,000 images, choosing fundamental images based on eigenvectors and removing irrelevant pixels.
result Achieved 94.6% test accuracy in diagnosing 113 patients.

Two new undersampling methods improve classification accuracy for imbalanced datasets.

problem Class imbalance and distributional differences in large datasets lead to biased models and poor predictive performance.
method Mutual information-based stratified simple random sampling and support points optimization.
result Empirical results show higher balanced classification accuracy compared to traditional techniques.

The paper tackles the trade-off between fairness and accuracy in machine learning models.

problem Ensuring fairness in machine learning often reduces model accuracy.
method The paper introduces formal tools for reconciling the fairness-accuracy tension using Pareto optimality from multi-objective optimization.
result The Chebyshev scalarization scheme is superior for finding Pareto optimal solutions compared to the linear scalarization scheme.

This study compares machine learning models for short-term stock price forecasting.

problem Accurate short-term stock price prediction in the NYSE.
method Compared four machine learning models (XGBoost, Random Forest, Multi-layer Perceptron, Support Vector Regression) on NYSE stocks.
result XGBoost model outperformed others with highest accuracy.

Efficiently tunes hyperparameters with dynamic accuracy method.

problem Optimizing machine learning hyperparameters with inexact evaluations.
method Dynamic accuracy derivative-free optimization for hyperparameter tuning.
result Demonstrates robust and efficient hyperparameter tuning compared to fixed accuracy methods.

New models improve machine learning accuracy and transparency in finance.

problem Black-box machine learning models lack interpretability in regulated industries.
method Introducing generalized groves of neural additive models with clear feature categories and interactions.
result Generalized groves of neural additive models achieve high accuracy with predominantly linear and sparse nonlinear components.

This paper identifies duplicate questions on Quora using machine and deep learning models.

problem Detecting semantically identical questions on Quora to improve user experience.
method Applied machine learning and deep learning techniques on Quora's dataset.
result Xgboost model with character level term frequency and inverse term frequency achieved 85.82% accuracy.

This paper compares machine learning methods for recognizing lane change intentions from vehicle trajectories.

problem Accurately detecting and predicting lane change processes in autonomous vehicles.
method Comparison of different machine learning methods on high-dimensional time series data.
result Ensemble methods reduce Type II and Type III classification errors, while LightGBM outperforms XGBoost in training efficiency.

New method uses geometric moments for accurate machine learning potentials.

problem Creating high-dimensional potential energy surfaces efficiently.
method Feed-forward neural networks with invariant local molecular descriptors based on geometric moments.
result Accuracy comparable to established models, high efficiency.

Fair machine learning models can be vulnerable to adversarial attacks that reduce their accuracy and fairness.

problem Fairness constraints in machine learning models can compromise their robustness against adversarial attacks.
method Analysis of data poisoning attacks on group-based fair machine learning models, focusing on equalized odds.
result Adversaries can significantly reduce the test accuracy of fair machine learning models and widen their fairness gap.

The step of expert taxa recognition currently slows down the response time of many bioassessments. Shifting to quicker and cheaper state-of-the-art machine learning approaches is still met with expert scepticism towards the ability and logic of machines. In our study, we investigate both the differences in accuracy and…

2017-08-23abs ↗pdf ↗

The study predicts Kronecker coefficients using interpretable machine learning models.

problem Predicting Kronecker coefficients of the symmetric group.
method Employed interpretable machine learning models with input features of triples of partitions and b-loadings.
result Achieved an accuracy of approximately 83% and over 99% with transformer-based models.

A new machine learning framework called machine collaboration improves prediction accuracy.

problem Improving prediction accuracy in machine learning.
method Machine Collaboration (MaC) framework, which uses a circular and interactive learning approach.
result Machine Collaboration framework significantly outperforms other state-of-the-art methods in most cases.

This study uses machine learning to predict sovereign credit ratings and identifies key factors.

problem Predicting sovereign credit ratings and identifying important factors.
method Used Multilayer Perceptron (MLP), Classification and Regression Trees (CART), Support Vector Machines (SVM), Naïve Bayes (NB), and Ordered Logit (OL) models.
result MLP is the best model for predicting sovereign credit ratings with a 68% accuracy.

Study predicts Euroleague basketball games with simple models, less accurate than crowds.

problem Predicting Euroleague basketball games with machine learning.
method Extracted features from Euroleague data, applied supervised machine learning techniques.
result Simple machine learning models achieve accuracy of less than 67% on test sets, outperformed by crowds.

Selective neural network improves credit risk prediction while maintaining interpretability.

problem Improving credit risk prediction accuracy while maintaining interpretability for financial regulators.
method Introducing a neural network with a selective option to distinguish between linear and non-linear datasets.
result For most datasets, logistic regression is sufficient and interpretable, while for specific data portions, a shallow neural network model provides better accuracy.

Machine learning predicts Kronecker coefficients with high accuracy.

problem Predicting Kronecker coefficients from tensor products of symmetric group representations.
method Training machine learning models (NN, CNN, GBDT) to classify Kronecker coefficients as zero or non-zero.
result Trained models achieve high accuracy (0.98\approx 0.98) in classifying Kronecker coefficients.

Method improves simulation accuracy by mitigating distribution shift in hybrid systems.

problem Mitigating distribution shift in machine-learning augmented hybrid simulation.
method Tangent-space regularized estimator to control distribution shift.
result Marked improvements in simulation accuracy, especially for systems with high distribution shift.

A new stock selection strategy uses combined machine learning with dynamic weighting methods.

problem Improving stock selection accuracy and performance.
method Combined machine learning algorithms with static and dynamic weighting methods.
result IC-based dynamic weighting outperforms static evaluation metrics in backtested returns and predictive performance.

This study compares machine learning methods for high-cardinality categorical variables.

problem Machine learning struggles with high-cardinality categorical variables.
method Empirical comparison of tree-boosting, deep neural networks, and linear mixed effects models.
result Tree-boosting with random effects outperforms deep neural networks with random effects.

In a typical online learning scenario, a learner is required to process a large data stream using a small memory buffer. Such a requirement is usually in conflict with a learner's primary pursuit of prediction accuracy. To address this dilemma, we introduce a novel Bayesian online classi cation algorithm, called the Vi…

2012-05-09abs ↗pdf ↗

A novel method computes Wigner kernels for atomic environments, achieving state-of-the-art accuracy.

problem Efficiently describing local atomic environments in materials science.
method Computes fully equivariant and body-ordered kernels iteratively, independent of basis.
result Achieves state-of-the-art accuracy on the QM9 benchmark dataset.

Proposes a machine learning predictor for survey data.

problem Limited integration of machine learning in traditional surveys.
method Predictor supported by machine learning algorithms, analyzing departures from model assumptions.
result Machine learning predictors are a good alternative, even under small departures from model assumptions.

Machine Learning (ML) algorithms, like Convolutional Neural Networks (CNN), Support Vector Machines (SVM), etc. have become widespread and can achieve high statistical performance. However their accuracy decreases significantly in energy-constrained mobile and embedded systems space, where all computations need to be c…

2017-04-10abs ↗pdf ↗