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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 Identifiability Assumptions

Paper addresses identifiability for directed cyclic graphical models with feedback.

problem Identify causal relationships in multivariate data with feedback.
method Introduces new identifiability assumptions and develops search algorithms.
result New identifiability assumptions outperform the faithfulness assumption in selecting true skeletons.

This work addresses the following question: Under what assumptions on the data generating process can one infer the causal graph from the joint distribution? The approach taken by conditional independence-based causal discovery methods is based on two assumptions: the Markov condition and faithfulness. It has been show…

2012-02-14abs ↗pdf ↗

We identify direct causes of a target variable from observational data without full DAG identifiability.

problem Learning direct causes of a target variable from observational data.
method Developed algorithms under relaxed identifiability assumptions for one environment without interventions.
result Identifiable set of direct causes from observational data under specific assumptions.

New method identifies Gaussian SEMs with varying error variances.

problem Identify Gaussian SEMs with both homogeneous and heterogeneous error variances.
method Exploits error variances and edge weights; provides a statistically consistent and feasible structure learning algorithm.
result Proves identifiability of Gaussian SEMs with both homogeneous and heterogeneous unknown error variances.

Paper simplifies complex causal identifiability problems with exogenous isomorphism.

problem Achieving consistent answers to causal questions in Structural Causal Models.
method Introducing exogenous isomorphism and proposing EI\sim_{\mathrm{EI}}-identifiability.
result Unified and generalized theories for practical applications in counterfactual reasoning.

New method identifies latent variables without strong assumptions.

problem Recovering latent variables from observational data without strong assumptions.
method Diverse dictionary learning, using set-theoretic intersections, complements, and symmetric differences.
result Identifiability of latent variables up to appropriate indeterminacies without strong assumptions.

New method identifies causal variables from multi-node interventions, expanding on previous single-node approaches.

problem Inferring high-level causal variables from low-level observations under multiple interventions.
method Exploits variance trace of ground truth causal variables and regularizes for sparsity.
result First identifiability result for causal representation learning with multiple node interventions.

We tackle causal discovery in linear systems with measurement error and unobserved causes.

problem Causal discovery in linear systems with measurement error and unobserved causes.
method Characterization of identifiability based on the mixing matrix, proposing causal structure learning methods.
result The structure of causal models can be identified under certain faithfulness assumptions.

New methods generalize nonlinear ICA beyond structural sparsity.

problem Identify true latent sources from nonlinear mixtures without structural sparsity assumptions.
method Propose identifiability results for undercomplete, partial sparsity, and flexible grouping structures.
result Prove identifiability in general settings of undercompleteness, partial sparsity, and flexible grouping structures.

This work addresses identifiability in sequential data with switching dynamics, introducing a new estimator.

problem Identifiability of sequential data with regime-switching dynamics under flexible assumptions.
method Introduces ΩΩSDS, a flow-based estimator for exact likelihood optimization.
result Demonstrates improved disentanglement and more accurate forecasting compared to VAE-based estimators.

New bounds on sample size for identifying mixture models with grouped samples.

problem Identifying mixture models with minimal sample size.
method Generalized identifiability bounds for mixture models with grouped samples.
result Identifiability with (2m1)/(k1)(2m-1)/(k-1) samples per group, with no improvement possible.

This paper broadens contrastive learning for disentangled representations without strict data distribution assumptions.

problem Learning disentangled representations from data with specific assumptions.
method Extends theoretical guarantees for disentanglement to a broader family of contrastive methods, relaxing data distribution assumptions.
result Identifiability of true latents for four contrastive losses proved without common independence assumptions.

Bayesian model selection improves causal discovery in complex datasets.

problem Identifying causal direction in Markov equivalence classes with realistic assumptions.
method Incorporating causal assumptions within Bayesian framework for model selection.
result Bayesian model selection outperforms previous methods on various datasets.

Researchers identify latent variables and causal structures from nonlinear hierarchical models.

problem Challenging task of identifying latent variables and causal structures from observational data, especially when relationships are nonlinear.
method Investigated nonlinear latent hierarchical causal models, developed identification criterion, and constructed an estimation procedure.
result Identifiability of causal structures and latent variables achieved under mild assumptions.

Finite mixture models are statistical models which appear in many problems in statistics and machine learning. In such models it is assumed that data are drawn from random probability measures, called mixture components, which are themselves drawn from a probability measure P over probability measures. When estimating …

2015-02-23abs ↗pdf ↗

Develops identifiability theory for multi-lag regime-switching models.

problem Ensuring interpretability of deep latent variable models with multi-lag dependencies.
method Formulates a general theoretical framework for multi-lag Regime-Switching Models (RSMs), proving identifiability of number of regimes and multi-lag transitions.
result Establishes identifiability conditions for multi-lag regime-switching models, including Markov Switching Models and Switching Dynamical Systems.

Single proxy variable helps estimate causal effects from confounders.

problem Estimating causal effects from treatment to outcome when unobserved confounders are present.
method Assumes a single, potentially multi-dimensional proxy variable of the unobserved confounder and a known mechanism generating the proxy from the confounder. Proves causal effects are identifiable under completeness assumption.
result Causal effects are identifiable under SPICE assumption.

New method learns DAGs from noisy data without identifiability assumptions.

problem Learning DAGs from non-identifiable Gaussian models with heteroscedastic noise.
method Mixed-integer programming framework for medium-sized problems.
result Asymptotically optimal solution with early stopping criterion.

New method identifies how platforms can influence consumer behavior.

problem Estimating the causal effect of digital platforms on consumption.
method General causal inference problem, focusing on observational designs, and explicitly modeling consumption dynamics.
result Exogenous variation in consumption and responsive algorithmic control actions are sufficient for identifying steerability of consumption.

This paper tackles CRL for multi-node interventions, achieving identifiability guarantees.

problem CRL under unknown multi-node interventions, focusing on single-node assumptions.
method Establishes identifiability results for general latent causal models under stochastic interventions.
result Identifiability up to ancestors using soft interventions, perfect identifiability using hard interventions.

New method combines domain changes and sparse mixing for better latent variable learning.

problem Challenges in identifying latent variables due to insufficient domain changes and violated sparsity constraints.
method Combines sufficient changes and sparse mixing constraints, using domain encoding networks and variational autoencoders.
result Identifiability of latent variables achieved with less restrictive constraints.

New method AnInfoNCE uncovers latent factors in contrastive learning with practical variability.

problem Theoretical assumptions of contrastive learning loss overlook practical variability in positive pairs.
method AnInfoNCE, a generalization of InfoNCE, models anisotropic variability to uncover latent factors.
result AnInfoNCE increases recovery of latent factors in CIFAR10 and ImageNet, albeit at the cost of accuracy.

Bounds on factual and counterfactual distributions under measurement error in discrete models.

problem Measurement errors in discrete data and their impact on inference.
method Expressing modeling assumptions as linear constraints and using linear programming to derive bounds.
result Sharp bounds on factual and counterfactual distributions for various models, including instrumental variable scenarios.

New method identifies latent components in nonlinear mixtures without stringent assumptions.

problem Unraveling latent components in nonlinearly mixed data.
method Constrained autoencoder-based algorithm for identifiability under relaxed assumptions.
result Comprehensive sample complexity results and new identifiability conditions.

A new framework for robust and coherent counterfactual transports.

problem Estimating joint distributions over counterfactual outcomes in personalized decision-making and treatment risk assessment.
method Counterfactual cocycles that use algebraic structure to provide coherence and identifiability guarantees, bridging the gap between bijective SCMs and OT methods.
result Counterfactual cocycles provide state-of-the-art performance and noise-robustness across synthetic benchmarks and a real-world study.

New method identifies causal relationships without strong assumptions.

problem Causal Representation Learning (CRL) is ill-posed due to representation and causal discovery issues.
method Identifiability based on grouping of observational variables, self-supervised estimation framework.
result Practical identifiability conditions without temporal structure, interventions, or weak supervision.

Interventional data helps identify latent factors without distributional assumptions.

problem Identifying latent factors from interventional data without distributional assumptions.
method Leveraging geometric signatures of latent factors' support from interventional data.
result Latent causal factors can be identified up to permutation and scaling given data from perfect do-interventions.

The paper bounds and identifies joint probabilities in causal inference with monotonicity assumptions.

problem Bounding and identifying joint probabilities of potential outcomes and observed variables under monotonicity assumptions.
method Proposes new families of monotonicity assumptions, formulates bounding problem as linear programming, introduces new monotonicity assumption for identification.
result Validated methods through numerical experiments and applied to real-world datasets.

New protocol identifies impossible edge orientations in causal graphs.

problem Causal-discovery algorithms cannot distinguish edge directions without assumptions.
method Discrete impossibility certificates and oracle queries.
result Upper bound of 1+K1+K expert interactions for DAG recovery.

New framework TDRL identifies latent causal variables from sequential data.

problem Identify latent causal variables from sequential data.
method Proposes TDRL framework to recover time-delayed latent causal variables and identify their relations from measured sequential data.
result Identifies latent causal variables reliably from sequential data.

GTBO uses group testing to optimize high-dimensional functions efficiently.

problem Optimizing expensive, high-dimensional functions with limited data.
method Group testing to identify active dimensions, then guide optimization.
result GTBO outperforms state-of-the-art methods on high-dimensional benchmarks.

Develops methods for estimating effects of multiple treatments with latent confounding.

problem Estimating effects of multiple treatments in the presence of unobserved confounding.
method Two assumptions based on shared confounding and independence of treatments given the confounder. Regularization by mutual information. Tractable lower bound for treatment effects.
result Validated on simulations and clinical medicine example, demonstrating estimation of treatment effects.

We describe algorithms for learning Bayesian networks from a combination of user knowledge and statistical data. The algorithms have two components: a scoring metric and a search procedure. The scoring metric takes a network structure, statistical data, and a user's prior knowledge, and returns a score proportional to …

2013-02-27abs ↗pdf ↗