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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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14274154 · May 202619922001200920182026
48 results for TSS identification

A new Twitter sentiment model predicts stock market trends with high accuracy.

problem Real-time prediction of future stock market prices.
method Baseline correlation approach using polynomial regression, classification, and lexicon-based sentiment analysis.
result Predicts stock market trends with 67.22% accuracy, up to 15 time samples in advance.

Unified framework TSS certifies robustness against semantic transformations.

problem Certifying robustness of ML models against semantic transformations.
method Unified framework TSS categorizes transformations into resolvable and differentially resolvable, proposing randomized smoothing and stratified sampling strategies.
result Significantly outperforms state of the art on over ten types of semantic transformations.

Paper analyzes electricity price and demand TSs using decomposition to detect cyber-attacks.

problem Detecting cyber-attacks in electricity price and demand time series data.
method Performed time series decomposition using additive and multiplicative methods, tested error term for patterns.
result Found a chance of cyber-attacks in the error term of decomposed TSs.

Enhances solar flare prediction with advanced preprocessing and contrastive learning.

problem Accurate prediction of solar flares to mitigate risks to astronauts and equipment.
method Advanced data preprocessing pipeline and contrastive learning with GRU regression model.
result Exceptional True Skill Statistic (TSS) scores, surpassing previous methods.

Paper explores using EEG for better speaker identification, even in noisy environments.

problem Speaker identification performance degrades in background noise.
method Uses EEG signals to enhance speaker identification systems, comparing with acoustic features.
result Speaker identification system using only EEG features outperforms one using only acoustic features in high background noise.

In the present paper we study interval identification systems of order three. We prove that the Rauzy induction preserves symmetry: for any symmetric interval identification system of order three after finitely many iterations of the Rauzy induction we always obtain a symmetric system. We also provide an example of sym…

2010-10-09abs ↗pdf ↗

Simplified identification methods for causal inference with arbitrary interventional distributions.

problem Estimating cause-effect relationships from data with experimental interventions.
method Using Single World Intervention Graphs and nested model factorization, we provide algorithms for identifying causal parameters from mixed observational and interventional distributions.
result Our algorithms are complete for certain types of interventional marginal distributions.

Study on identifying and inferring nonlinear dynamics on unknown networks.

problem Identifying network structure in nonlinear dynamic systems with unknown interactions.
method Showed network structure is not generically identified, requiring sufficient spectral heterogeneity. Developed necessary and sufficient conditions for identification and proposed a semiparametric estimator.
result Necessary and sufficient conditions for identification of network structure in nonlinear dynamic systems.

New findings on complexity limits in fixed budget bandit identification.

problem Determining the best possible error rate for fixed budget bandit identification.
method Analyzing the best non-adaptive sampling procedures and showing the existence of complexities.
result No fixed complexity for certain bandit identification tasks.

Review of automatic de-identification systems for EHR, highlighting challenges beyond accuracy.

problem Challenges in surrogate generation and patient privacy in de-identification of EHR.
method Comprehensive review of 18 recently published systems, focusing on accuracy and challenges.
result Despite accuracy improvements, challenges remain in surrogate generation and patient privacy.

Bayesian methods reduce variance in subspace identification for small data sets.

problem High variance in traditional subspace identification methods for large models or small sample sizes.
method Investigation of Bayesian estimation solutions (regularized and shrinkage estimators) for subspace identification.
result Bayesian estimators reduce estimation risk by up to 40% compared to traditional methods.

A new algorithm identifies one of several nearly optimal arms in linear bandits.

problem Identifying one arm that is close to the best arm in linear bandits.
method Developed a procedure to adapt best-arm identification algorithms for ε\varepsilon-best-answer identification in transductive linear stochastic bandits.
result Proposed an asymptotically optimal algorithm for ε\varepsilon-best-answer identification.

A distributed system identification method for LTI systems using reverse experience replay.

problem Online system identification of LTI systems over multi-agent networks.
method DSGD-RER, a distributed variant of SGD-RER with backward updates.
result The estimation error decreases as the network size grows.

dynoGP uses deep Gaussian processes for dynamic system identification.

problem System identification for complex dynamical systems.
method Interconnecting linear dynamic GPs and static GPs to model dynamic and static nonlinearities.
result Demonstrates effectiveness of the approach using both simulated and real-world data.

Proposes SPCA to incorporate structural constraints in model identification.

problem Model identification with partial structural knowledge.
method Structural Principal Component Analysis (SPCA) that leverages structural information.
result Demonstrates improved model estimates using synthetic and industrial data.

ADSGD method speeds up model identification in sparse optimization.

problem Implicit model identification in sparse optimization problems.
method Accelerated Doubly Stochastic Gradient Method (ADSGD) for faster explicit model identification.
result ADSGD achieves faster explicit model identification and improved algorithm efficiency.

Study shows neural networks outperform traditional methods in speaker identification.

problem Open-set speaker identification with large populations.
method Discriminative neural networks compared to Gaussian mixture models.
result Multi-class neural networks outperform traditional methods for large speaker populations.

This paper tackles Bayesian system identification with probabilistic numerical methods.

problem Accurately modeling nonlinear dynamic systems from noisy data.
method Probabilistic Sequential Monte Carlo (SMC) combined with probabilistic numerical integration.
result Efficient identification of latent states and system parameters from noisy measurements.

Study measures uncertainty in MST identification across different correlation networks.

problem Uncertainty in MST identification across various correlation-based market networks.
method Developed a framework using random variable networks (RVN) to measure uncertainty of MST identification.
result FDR is the most appropriate measure for MST identification reliability.

Paper improves phase identification in power systems using information theory.

problem Improving supervised learning accuracy in phase identification.
method Developed two new techniques based on information theory.
result Significant improvement in phase identification accuracy (e.g., from 51.7% to 97.3%).

Optimal best-arm identification in linear bandits reduces sampling budget.

problem Identifying the best arm with fixed confidence in stochastic linear bandits.
method A simple algorithm that tracks an optimal proportion of arm draws, updated as rarely as desired.
result The algorithm's sampling complexity matches known lower bounds, asymptotically almost surely and in expectation.

Objective: Patient notes in electronic health records (EHRs) may contain critical information for medical investigations. However, the vast majority of medical investigators can only access de-identified notes, in order to protect the confidentiality of patients. In the United States, the Health Insurance Portability a…

2016-06-10abs ↗pdf ↗

Patient notes contain a wealth of information of potentially great interest to medical investigators. However, to protect patients' privacy, Protected Health Information (PHI) must be removed from the patient notes before they can be legally released, a process known as patient note de-identification. The main objectiv…

2016-10-30abs ↗pdf ↗

Comment on deconfounder method, highlighting causal identification issues and risks of parametric assumptions.

problem Causal identification issues in settings where deconfounder method is suggested.
method Summarizing arguments against causal identification, cautioning on parametric assumptions, and discussing nonparametric identification results.
result Nonparametric identification results may be more interesting for detecting causal identification from observed data.

This research improves deep neural networks for parameter identification and prediction in stochastic Volterra integral equations.

problem Parameter identification and prediction in Volterra integral equations driven by Gaussian noise.
method Improved deep neural networks framework that incorporates inter-output relationships into the loss function.
result The framework enhances parameter estimation accuracy and provides accurate solutions for modeling stochastic systems.

Modeling dynamical systems is important in many disciplines, e.g., control, robotics, or neurotechnology. Commonly the state of these systems is not directly observed, but only available through noisy and potentially high-dimensional observations. In these cases, system identification, i.e., finding the measurement map…

2014-10-28abs ↗pdf ↗

Efficiently identifies best policies in tabular MDPs with reduced computational cost.

problem Identifying the best policy in tabular MDPs with high computational cost.
method Combines posterior sampling with online learning to achieve asymptotic optimality.
result Achieves optimal sample complexity and posterior contraction rate with O(S2AH)O(S^2AH) per episode.

Consistent partial identification of causal effects proved for neural models.

problem Consistency of neural causal partial identification methods.
method Proving consistency for neural models with continuous and categorical variables, considering architecture design and Lipschitz regularization.
result Proven consistency of partial identification via neural causal models in a general setting.

New gait segmentation method identifies users and adversaries with high accuracy.

problem Simultaneous identification of users and adversaries from accelerometer data.
method Geometric features and a new similarity metric for time series analysis.
result 98.79% accuracy for 6 classes (user-adversary identification) and 99.06% for binary (user only identification).

Bayesian neural networks with nonparametric noise models for system identification.

problem Estimating parameters and noise processes in stochastic dynamic systems.
method Bayesian nonparametric approach using neural networks and Gibbs sampler.
result The method converges to full nonparametric Bayesian regression model.