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Misspecification in Inverse Reinforcement Learning [PDF]

open access: yesProceedings of the AAAI Conference on Artificial Intelligence, 2023
The aim of Inverse Reinforcement Learning (IRL) is to infer a reward function R from a policy pi. To do this, we need a model of how pi relates to R. In the current literature, the most common models are optimality, Boltzmann rationality, and causal entropy maximisation. One of the primary motivations behind IRL is to infer human preferences from human
Joar Skalse, Alessandro Abate
core   +4 more sources

In models we trust: preregistration, large samples, and replication may not suffice

open access: yesFrontiers in Psychology, 2023
Despite discussions about the replicability of findings in psychological research, two issues have been largely ignored: selection mechanisms and model assumptions.
Martin Spiess, Pascal Jordan
doaj   +1 more source

Effect of Probability Distribution of the Response Variable in Optimal Experimental Design with Applications in Medicine

open access: yesMathematics, 2021
In optimal experimental design theory it is usually assumed that the response variable follows a normal distribution with constant variance. However, some works assume other probability distributions based on additional information or practitioner’s ...
Sergio Pozuelo-Campos   +2 more
doaj   +1 more source

Dynamic Concern for Misspecification [PDF]

open access: yesProceedings of the 24th ACM Conference on Economics and Computation, 2023
I consider an agent who posits a set of probabilistic models for the payoff‐relevant outcomes. The agent has a prior over this set but fears the actual model is omitted and hedges against this possibility. The concern for misspecification is endogenous: If a model explains the previous observations well, the concern attenuates.
openaire   +2 more sources

Estimation Methods of the Multiple-Group One-Dimensional Factor Model: Implied Identification Constraints in the Violation of Measurement Invariance

open access: yesAxioms, 2022
Factor analysis is one of the most important statistical tools for analyzing multivariate data (i.e., items) in the social sciences. An essential case is the comparison of multiple groups on a one-dimensional factor variable that can be interpreted as a ...
Alexander Robitzsch
doaj   +1 more source

Optimal weighting for estimating generalized average treatment effects

open access: yesJournal of Causal Inference, 2022
In causal inference, a variety of causal effect estimands have been studied, including the sample, uncensored, target, conditional, optimal subpopulation, and optimal weighted average treatment effects.
Kallus Nathan, Santacatterina Michele
doaj   +1 more source

Selection Consistency of Lasso-Based Procedures for Misspecified High-Dimensional Binary Model and Random Regressors

open access: yesEntropy, 2020
We consider selection of random predictors for a high-dimensional regression problem with a binary response for a general loss function. An important special case is when the binary model is semi-parametric and the response function is misspecified under
Mariusz Kubkowski, Jan Mielniczuk
doaj   +1 more source

Model Misspecification as the Causes of Flypaper Effect

open access: yesProceedings, 2023
The aim of this paper is to investigate the relationship between the Fly-paper effect (FPE) and possible errors in the specification of econometric models used in the empirical analysis of FPE.
Siniša Mali
doaj   +1 more source

Inference for Iterated GMM Under Misspecification [PDF]

open access: yes, 2021
This paper develops inference methods for the iterated overidentified Generalized Method of Moments (GMM) estimator. We provide conditions for the existence of the iterated estimator and an asymptotic distribution theory, which allows for mild ...
Hansen, BE   +3 more
core   +1 more source

Evaluating performance of covariate-constrained randomization (CCR) techniques under misspecification of cluster-level variables in cluster-randomized trials

open access: yesContemporary Clinical Trials Communications, 2021
Covariate constrained randomization (CCR) is a method of controlling imbalance in important baseline covariates in cluster-randomized trials (CRT). We use simulated CRTs to investigate the performance (control of imbalance) of CCR relative to simple ...
Madeleine Organ   +5 more
doaj   +1 more source

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