Université de Neuchâtel

Ontology engineering using formal concept analysis from unstructured textual data

Jabbari, Simin ; Stoffel, Kilian (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2019 ; 2806.

Knowledge extraction especially from unstructured data such as texts has been always considered as one of the highly demanded requests with lots of applications in almost all industries. Design and building of solutions that are capable of extracting knowledge, in an almost automated way, is not an easy task at all. Many researchers have proposed variety of methodologies and algorithms to...

Université de Neuchâtel

Towards the democratization of ontological modeling through a new pervasive means of representation

Baset, Selena ; Stoffel, Kilian (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2019 ; 2787.

Despite their proven utility in various areas of knowledge engineering, ontologies are falling short of reaching an equal position as formal domain models in the landscape of enterprise software development. With the ultimate goal of making ontologies more accessible to a wider audience of software development stakeholders, this thesis investigates the reasons that are still standing between...

Université de Neuchâtel

A knowledge extraction framework for crime analysis : unsupervised methods in uncertain environments

Albertetti, Fabrizio ; Stoffel, Kilian (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2015 ; 2514.

This doctoral thesis investigates the role of knowledge extraction methods in the analysis of crime as an interdisciplinary project, with a focus on unsupervised methods dealing with the uncertain aspects that are intrinsic to the crime environment. In a context where data generated from criminal activities are increasingly available due to the evolution of technology, the use of...

Université de Neuchâtel

Formalized modeling of qualitative case studies

Han, Dong ; Stoffel, Kilian (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2013 ; 2399.

This thesis aims to solve the problems of data modelization and processing emerging in qualitative case studies. Established on grounded theory, a comprehensive method is proposed, initially elaborated in the form of a workflow solution. A suit of ontologies are proposed serving for knowledge representation, integration, and extraction. Based on this knowledge, topic analysis is conducted to...

Université de Neuchâtel

Towards bridging the gap between reprensentation and formalism in the context of systems life cycle management processes

Simon, Eric ; Stoffel, Kilian (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2013 ; 2400.

In the context of systems development life cycles (SDLC), a gap exists between the representations of the involved methodologies as process on the one hand, for example using business process model and notation (BPMN), and the formalisms that would provide the level of analysability necessary to validate the corresponding processes on the other hand beyond mere execution, for instance Petri nets....

Université de Neuchâtel

Bottom-up approach to spatial datamining

Künzi, Christophe ; Stoffel, Kilian (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2013 ; 2334.

One of the goals of computer vision research is to design systems that provide human-like visual capabilities such that a certain environment can be sensed and interpreted to take appropriate actions. Among the different forms available to represent such an environment, the 3D point cloud (unstructured collection of points in a three dimensional space) rises a lot of challenging problems....