Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 12 of 12 for “"Wissensrepräsentation"”.
-
Implizite und explizite semantische Beeinträchtigungen bei Patienten mit leichtgradigen Demenzerkrankungen
… eine Schädigung zugrundeliegender semantischer Wissensrepräsentationen zu den Auffälligkeiten führt, ob eher der bewußte Zugriff auf diese Informationen gestört ist oder ob beeinträchtigte semantische Integrations- und Verarbeitungsprozesse ursächlich verantwortlich zu machen sind. <br>In der …
-
On the Computation of Common Subsumers in Description Logics
Description logics (DL) knowledge bases are often build by users with expertise in the application domain, but little expertise in logic. To support this kind of users when building their knowledge bases a number of extension methods have been proposed to provide the user with concept descriptions …
-
Action, Time and Space in Description Logics
Description Logics (DLs) are a family of logic-based knowledge representation (KR) formalisms designed to represent and reason about static conceptual knowledge in a semantically well-understood way. On the other hand, standard action formalisms are KR formalisms based on classical logic designed …
-
The complexity of description logics with concrete domains
Concrete domains are an extension of Description Logics (DLs) that allows to integrate reasoning about conceptual knowledge with reasoning about "concrete qualities" of real world entities such as their age, weight, shape, and temporal extension. In this thesis, we perform an in-depth analysis of …
-
Neuronal and cognitive correlates of attentional and automatic semantic number processing
Number magnitude is assumed to be encoded in an analog visuo-spatial frame, which resembles a left-to-right oriented and logarithmically compressed mental number line. Some authors have suggested that also the semantic representation of multidigit numbers can be described by their location on the …
-
Complexity results and practical algorithms for logics in knowledge representation
Description Logics (DLs) are used in knowledge-based systems to represent and reason about terminological knowledge of the application domain in a semantically well-defined manner. In this thesis, we establish a number of novel complexity results and give practical algorithms for expressive DLs …
-
Proof theory and algorithms for answer set programming
Answer Set Programming (ASP) is an emerging paradigm for declarative programming, in which a computational problem is specified by a logic program such that particular models, called answer sets, match solutions. ASP faces a growing range of applications, demanding for high-performance tools able …
-
Erschließung und bildliche Dokumentation von Wasserzeichen in Online-Datenbanken
Die Untersuchung von Wasserzeichen zählt in vielen quellenorientierten Wissenschaften wie der Musikwissenschaft oder der Mediävistik zu den Standardmethoden. In den 1990er Jahren entstanden die ersten Online-Wasserzeichendatenbanken. Die Wissenschaft erhielt dadurch Zugriff auf umfangreiches …
-
Semantische Modellierung für ein wissensbasiertes System in der Pädiatrie
This project aimed to create a basic framework for a computer-based system, which enables physicians and medical students to quickly and efficiently retrieve medical knowledge. The knowledge base DataMed is designed to assist the physician with finding diagnoses and making clinical decisions in his …
-
Schließen der semantischen Lücke in der medizinischen Bildanalyse : kontextabhängige Objektextraktion aus hierarchisch partitionierten Bildern
In any biomedical domain there are applications in which objects are identified, measured and counted. Examples are the identification and staging of tumors or counting of cells in micrographs for cytological screenings. In the long run the constantly increasing number of acquired images in …