Search Results for author: Wolfgang Schmid

Found 7 papers, 0 papers with code

Spatial and Spatiotemporal Volatility Models: A Review

no code implementations24 Aug 2023 Philipp Otto, Osman Doğan, Süleyman Taşpınar, Wolfgang Schmid, Anil K. Bera

In this paper, we aim to provide a comprehensive review of the recent literature on spatial and spatiotemporal volatility models.

Time Series

Statistical inference for the EU portfolio in high dimensions

no code implementations10 May 2020 Taras Bodnar, Solomiia Dmytriv, Yarema Okhrin, Nestor Parolya, Wolfgang Schmid

In this paper, using the shrinkage-based approach for portfolio weights and modern results from random matrix theory we construct an effective procedure for testing the efficiency of the expected utility (EU) portfolio and discuss the asymptotic behavior of the proposed test statistic under the high-dimensional asymptotic regime, namely when the number of assets $p$ increases at the same rate as the sample size $n$ such that their ratio $p/n$ approaches a positive constant $c\in(0, 1)$ as $n\to\infty$.

Vocal Bursts Intensity Prediction

Evaluating Active Learning Heuristics for Sequential Diagnosis

no code implementations9 Jul 2018 Patrick Rodler, Wolfgang Schmid

As initial system observations usually do not suffice to deterministically pin down just one explanation of the system's misbehavior, additional system measurements can help to differentiate between possible explanations.

Active Learning Sequential Diagnosis

Bayesian mean-variance analysis: Optimal portfolio selection under parameter uncertainty

no code implementations9 Mar 2018 David Bauder, Taras Bodnar, Nestor Parolya, Wolfgang Schmid

The parameters of the posterior predictive distributions are functions of the observed data values and, consequently, the solution of the optimization problem is expressed in terms of data only and does not depend on unknown quantities.

Statistical Finance Portfolio Management

Inexpensive Cost-Optimized Measurement Proposal for Sequential Model-Based Diagnosis

no code implementations28 May 2017 Patrick Rodler, Wolfgang Schmid, Konstantin Schekotihin

In this work we present strategies for (optimal) measurement selection in model-based sequential diagnosis.

Sequential Diagnosis

Scalable Computation of Optimized Queries for Sequential Diagnosis

no code implementations14 Dec 2016 Patrick Rodler, Wolfgang Schmid, Kostyantyn Shchekotykhin

During query computation, existing sequential diagnosis methods often require the generation of many unnecessary query candidates and strongly rely on expensive logical reasoners.

Sequential Diagnosis

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