Search Results for author: Uli Sattler

Found 6 papers, 1 papers with code

Minimal Macro-Based Rewritings of Formal Languages: Theory and Applications in Ontology Engineering (and beyond)

1 code implementation18 Dec 2023 Christian Kindermann, Anne-Marie George, Bijan Parsia, Uli Sattler

In this paper, we introduce the problem of rewriting finite formal languages using syntactic macros such that the rewriting is minimal in size.

Ontology-based n-ball Concept Embeddings Informing Few-shot Image Classification

no code implementations19 Sep 2021 Mirantha Jayathilaka, Tingting Mu, Uli Sattler

The approach consists of two components - converting symbolic knowledge of an ontology into continuous space by learning n-ball embeddings that capture properties of subsumption and disjointness, and guiding the training and inference of a vision model using the learnt embeddings.

Few-Shot Image Classification

Visual-Semantic Embedding Model Informed by Structured Knowledge

no code implementations21 Sep 2020 Mirantha Jayathilaka, Tingting Mu, Uli Sattler

With respect to both standard and zero-shot image classification, our approach shows superior performance compared with the original approach, which uses word embeddings.

Classification General Classification +3

Theoretical Foundations of Defeasible Description Logics

no code implementations16 Apr 2019 Katarina Britz, Giovanni Casini, Thomas Meyer, Kody Moodley, Uli Sattler, Ivan Varzinczak

Besides showing that our semantics is appropriate, these results pave the way for more effective decision procedures for defeasible reasoning in DLs.

Generating Ontologies from Templates: A Rule-Based Approach for Capturing Regularity

no code implementations27 Sep 2018 Henrik Forssell, Christian Kindermann, Daniel P. Lupp, Uli Sattler, Evgenij Thorstensen

We present a second-order language that can be used to succinctly specify ontologies in a consistent and transparent manner.

Negation

Algorithm for Adapting Cases Represented in a Tractable Description Logic

no code implementations16 May 2014 Liang Chang, Uli Sattler, Tianlong Gu

Following the idea of adaptation as revision, we firstly extend the logical basis for describing cases from propositional logic to the DL $\mathcal{EL_{\bot}}$, and present a formalism for adaptation based on $\mathcal{EL_{\bot}}$.

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