Search Results for author: Marcel Gehrke

Found 8 papers, 3 papers with code

Lifted Causal Inference in Relational Domains

1 code implementation15 Mar 2024 Malte Luttermann, Mattis Hartwig, Tanya Braun, Ralf Möller, Marcel Gehrke

Lifted inference exploits symmetries in probabilistic graphical models by using a representative for indistinguishable objects, thereby speeding up query answering while maintaining exact answers.

Causal Inference

Efficient Detection of Exchangeable Factors in Factor Graphs

1 code implementation15 Mar 2024 Malte Luttermann, Johann Machemer, Marcel Gehrke

In particular, we introduce the detection of exchangeable factors (DEFT) algorithm, which allows us to drastically reduce the computational effort for checking whether two factors are exchangeable in practice.

Colour Passing Revisited: Lifted Model Construction with Commutative Factors

1 code implementation20 Sep 2023 Malte Luttermann, Tanya Braun, Ralf Möller, Marcel Gehrke

Lifted probabilistic inference exploits symmetries in a probabilistic model to allow for tractable probabilistic inference with respect to domain sizes.

DPM: Clustering Sensitive Data through Separation

no code implementations6 Jul 2023 Yara Schütt, Johannes Liebenow, Tanya Braun, Marcel Gehrke, Florian Thaeter, Esfandiar Mohammadi

Privacy-preserving clustering groups data points in an unsupervised manner whilst ensuring that sensitive information remains protected.

Clustering Privacy Preserving

On the Completeness and Complexity of the Lifted Dynamic Junction Tree Algorithm

no code implementations18 Oct 2021 Marcel Gehrke

We contribute, to the best of our knowledge, the first completeness and complexity analysis for a temporal lifted algorithm, the so-called lifted dynamic junction tree algorithm (LDJT).

Taming Reasoning in Temporal Probabilistic Relational Models

no code implementations16 Nov 2019 Marcel Gehrke, Ralf Möller, Tanya Braun

Evidence often grounds temporal probabilistic relational models over time, which makes reasoning infeasible.

Clustering

Preventing Unnecessary Groundings in the Lifted Dynamic Junction Tree Algorithm

no code implementations2 Jul 2018 Marcel Gehrke, Tanya Braun, Ralf Möller

The lifted dynamic junction tree algorithm (LDJT) efficiently answers filtering and prediction queries for probabilistic relational temporal models by building and then reusing a first-order cluster representation of a knowledge base for multiple queries and time steps.

Answering Hindsight Queries with Lifted Dynamic Junction Trees

no code implementations2 Jul 2018 Marcel Gehrke, Tanya Braun, Ralf Möller

The lifted dynamic junction tree algorithm (LDJT) efficiently answers filtering and prediction queries for probabilistic relational temporal models by building and then reusing a first-order cluster representation of a knowledge base for multiple queries and time steps.

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