Internal working papers DIUF

Internal working papers DIUF
The DIUF Working Papers collection is a series of research papers edited by the Department of Informatics of the University of Fribourg (Switzerland). This series exists since 1958, and is available in its entirety in electronic form since 2015. The content of the publications fits into the research themes of informatics, operational research and statistics.
The collection has been published under the names of the Institute of Automation (IAUF) from 1958 to 1995, the Laboratory of Informatics (LIUF) from 1986 to 1995, and the Institute of Informatics (IIUF) from 1995 to 2000.
Université de Fribourg

COG-FPOM: adapted fuzzy pay-off method for real options valuation : application in the abandonment decision of petroleum producing fields

Borges, R.E.P. ; Meier, Andreas

(Internal working papers DIUF ; 17-01)

This paper presents the COG-FPOM, a model based on the Fuzzy Pay-Off Method (FPOM). The FPOM is a scenario-based real option valuation method that uses fuzzy numbers as possibility distributions. The paper shows an unexpected result generated by the original FPOM, in which the real option would have a negative value. It further analyses its reasons and suggests a way to overcome it, by using the...

Université de Fribourg

N-light-N : Read The Friendly Manual

Seuret, Mathias ; Alberti, Michele ; Liwicki, Marcus

(Internal working papers DIUF ; 16-02)

This documentation wants to be a "user manual" for the N-light-N framework. The goal is not only to introduce the framework but also to provide enough information such that one can start modifying and upgrading it after reading this document. This document is divided into five chapters. The main purpose of Chapter 1 is to introduce into our notation and formulation. It refers to further...

Université de Fribourg

Towards human-centered cyber-physical systems : a modeling approach

Hadorn, Benjamin ; Courant, Michèle ; Hirsbrunner, Béat

(Internal working papers DIUF ; 16-01)

In this paper we present a new CPS model that considers humans as holistic beings, where mind and body operate as a whole and characteristics like creativity and empathy emerge. These characteristics influence the way humans interact and collaborate with technical systems. Our vision is to integrate humans as holistic beings within CPS in order to move towards a human-machine symbiosis. This...

Université de Fribourg

Gesturing on the steering wheel, a comparison with speech and touch interaction modalities

Angelini, Leonardo ; Baumgartner, Jürgen ; Carrino, Francisco ; Carrino, Stefano ; Caon, Maurizio ; Abou Khaled, Omar ; Sauer, Jürgen ; Lalanne, Denis ; Mugellini, Elena ; Sonderegger, Andreas

(Internal working papers DIUF ; 15-03)

This paper compares an emergent interaction modality for the In-Vehicle Infotainment System (IVIS), i.e., gesturing on the steering wheel, with two more popular modalities in modern cars: touch and speech. We conducted a betweensubjects experiment with 20 participants for each modality to assess the interaction performance with the IVIS and the impact on the driving performance. Moreover, we...

Université de Fribourg

The no-wait job shop with regular objective : a method based on optimal job insertion

Gröflin, Heinz ; Bürgy, Reinhard

(Internal working papers DIUF ; 15-02)

The no-wait job shop problem (NWJS-R) considered here is a version of the job shop scheduling problem where, for any two operations of a job, a fixed time lag between their starting times is prescribed. Also, sequence-dependent set-up times between consecutive operations on a machine can be present. The problem consists in finding a schedule that minimizes a general regular objective function. We...

Université de Fribourg

Complementing Büchi automata with a subset-tuple construction

Allred, Joel ; Ultes-Nitsche, Ulrich

(Internal working papers DIUF ; 15-01)

Complementation of Büchi automata is well known for being difficult. In the worst case, a state-space growth of (0:76n)n is unavoidable. Recent studies suggest that “simpler” algorithms perform better than more involved ones on practical cases. In this paper, we present a simple “direct” algorithm for complementing Büchi automata. It involves a structured subset construction (using...