scholarly journals A Brief Roadmap into Uncertain Knowledge Representation via Probabilistic Description Logics

Algorithms ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 280
Author(s):  
Rafael Peñaloza

Logic-based knowledge representation is one of the main building blocks of (logic-based) artificial intelligence. While most successful knowledge representation languages are based on classical logic, realistic intelligent applications need to handle uncertainty in an adequate manner. Over the years, many different languages for representing uncertain knowledge—often extensions of classical knowledge representation languages—have been proposed. We briefly present some of the defining properties of these languages as they pertain to the family of probabilistic description logics. This limited view is intended to help pave the way for the interested researcher to find the most adequate language for their needs, and potentially identify the remaining gaps.

Author(s):  
LEONARD BOTHA ◽  
THOMAS MEYER ◽  
RAFAEL PEÑALOZA

Abstract Description logics (DLs) are well-known knowledge representation formalisms focused on the representation of terminological knowledge. Due to their first-order semantics, these languages (in their classical form) are not suitable for representing and handling uncertainty. A probabilistic extension of a light-weight DL was recently proposed for dealing with certain knowledge occurring in uncertain contexts. In this paper, we continue that line of research by introducing the Bayesian extension of the propositionally closed DL . We present a tableau-based procedure for deciding consistency and adapt it to solve other probabilistic, contextual, and general inferences in this logic. We also show that all these problems remain ExpTime-complete, the same as reasoning in the underlying classical .


Author(s):  
Dorian Bader ◽  
Johannes Fröhlich ◽  
Paul Kautny

The facile preparation of three regioisomeric thienopyrrolocarbazoles applying a convenient C-H activation approach is presented. Derived from indolo[3,2,1-<i>jk</i>]carbazole, the incorporation of thiophene into the triarylamine framework significantly impacted the molecular properties of the parent scaffold. The developed thienopyrrolocarbazoles enrich the family of triarylamine donors and constitute a novel building block for functional organic materials.


2019 ◽  
Author(s):  
Dorian Bader ◽  
Johannes Fröhlich ◽  
Paul Kautny

The facile preparation of three regioisomeric thienopyrrolocarbazoles applying a convenient C-H activation approach is presented. Derived from indolo[3,2,1-<i>jk</i>]carbazole, the incorporation of thiophene into the triarylamine framework significantly impacted the molecular properties of the parent scaffold. The developed thienopyrrolocarbazoles enrich the family of triarylamine donors and constitute a novel building block for functional organic materials.


Author(s):  
Riccardo Zese ◽  
Elena Bellodi ◽  
Evelina Lamma ◽  
Fabrizio Riguzzi ◽  
Fabiano Aguiari

2017 ◽  
Vol 23 (6) ◽  
pp. 1367-1374 ◽  
Author(s):  
Belen Corbacho ◽  
Kerry Bell ◽  
Eugena Stamuli ◽  
Gerry Richardson ◽  
Sarah Ronaldson ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document