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Consortium of Swiss Academic Libraries

Existence and asymptotics for solutions of a non-local Q-curvature equation in dimension three

Jin, Tianling ; Maalaoui, Ali ; Martinazzi, Luca ; Xiong, Jingang

In: Calculus of Variations and Partial Differential Equations, 2015, vol. 52, no. 3-4, p. 469-488

Université de Fribourg

Nonparametric estimation of natural direct and indirect effects based on inverse probability weighting

Huber, Martin ; Yu-Chin, Hsu ; Tsung-Chih, Lai

In: Journal of Econometric Methods, 2019, vol. 8, no. 1, p. 1-20

Using a sequential conditional independence assumption, this paper discusses fully nonparametric estimation of natural direct and indirect causal effects in causal mediation analysis based on inverse probability weighting. We propose estimators of the average indirect effect of a binary treatment, which operates through intermediate variables (or mediators) on the causal path between the...

Université de Fribourg

The Finite Sample Performance of Inference Methods for Propensity Score Matching and Weighting Estimators

Bodory, Hugo ; Camponovo, Lorenzo ; Huber, Martin ; Lechner, Michael

In: Journal of Business and Economic Statistics, 2020, vol. 38, no. 1, p. 183-200

This article investigates the finite sample properties of a range of inference methods for propensity score-based matching and weighting estimators frequently applied to evaluate the average treatment effect on the treated. We analyze both asymptotic approximations and bootstrap methods for computing variances and confidence intervals in our simulation designs, which are based on German...

Université de Fribourg

Dehn functions and Hölder extensions in asymptotic cones

Lytchak, Alexander ; Wenger, Stefan ; Young, Robert

In: Journal für die reine und angewandte Mathematik, 2020, vol. 2020, no. 763, p. 79–109

The Dehn function measures the area of minimal discs that fill closed curves in a space; it is an important invariant in analysis, geometry, and geometric group theory. There are several equivalent ways to define the Dehn function, varying according to the type of disc used. In this paper, we introduce a new definition of the Dehn function and use it to prove several theorems. First, we...

Consortium of Swiss Academic Libraries

A Criterion for Asymptotic Completeness in Local Relativistic QFT

Dybalski, Wojciech ; Gérard, Christian

In: Communications in Mathematical Physics, 2014, vol. 332, no. 3, p. 1167-1202

Université de Fribourg

Swisslink: high-precision, context-free entity linking exploiting unambiguous labels

Prokofyev, Roman ; Luggen, Michael ; Difallah, Djellel Eddine ; Cudré-Mauroux, Philippe

In: Proceedings of the 13th International Conference on Semantic Systems, 2017, p. 65–72

Webpages are an abundant source of textual information with manually annotated entity links, and are often used as a source of training data for a wide variety of machine learning NLP tasks. However, manual annotations such as those found on Wikipedia are sparse, noisy, and biased towards popular entities. Existing entity linking systems deal with those issues by relying on simple statistics...