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An ontology-based approach for Product Lifecycle Management

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Semantics for virtual humans

Alejandra Garcia Rojas Martinez

Population of Virtual Worlds with Virtual Humans is increasing rapidly by people who want to create a virtual life parallel to the real one (i.e. Second Life). The evolution of technology is smoothly providing the necessary elements to increase realism wit ...

EPFL2009

Context aware, multimodal, and semantic rendering engine

Daniel Thalmann, Patrick Salamin

Nowadays, several techniques exist to render digital content such as graphics, audio, haptic, etc. Unfortunately, they require different faculties that cannot always be applied, e.g. providing a picture to a blind person would be useless. In this paper, we ...

2009

Predictive approach for schema evolution

Hassina Bounif

In today's companies and organizations, databases are omnipresent. They are the means to represent and store information. Therefore, they must evolve whenever the information architecture (semantic and structure) changes. Databases are subject to evolution ...

EPFL2009

TOQL: Temporal Ontology Querying Language

Nikolaos Maris

We introduce TOQL, a query language for querying time information in ontologies. TOQL is a high level query language that handles ontologies almost like relational databases. Queries are issued as SQL-like statements involving time (i.e., time points or in ...

2009

Functional dependencies in OWL ABoxes

Jean Paul Calbimonte Perez

Functional Dependency (FD) has been extensively studied in database theory. Most recently there have been some works investigating the implications of extending Description Logics with functional dependencies. In particular the OWL ontology language offers ...

2009

A framework for RFID applications in product lifecycle management

Paul Xirouchakis, Jongho Shin, Young Seok Kim

This study introduces an overall framework for radio frequency identification (RFID) applications in product lifecycle management (PLM). Recently, with emerging technologies related to product identification and wireless mobile tele-communication, PLM prov ...

Taylor & Francis2009

Visual creation of inhabited 3D environments: An ontology-based approach

Daniel Thalmann, Alejandra Garcia Rojas Martinez

The creation of virtual reality applications and 3D environments is a complex task that requires good programming skills and expertise in computer graphics and many other disciplines. The complexity increases when we want to include complex entities such a ...

2008

Contextualized and personalized location-based services

Shijun Yu

Advances in the technologies of smart mobile devices and tiny sensors together with the increase in the number of web resources open up a plethora of new mobile information services where people can acquire and disseminate information at any place and any ...

EPFL2008

Methods of inferring user preferences using ontologies

Boi Faltings, Vincent Jean Fabrice Schickel

Methods of inferring user preferences using ontologies use ontology structure based similarity and an inference mechanism in defining ontology filtering (OF). Items are recommended to users by identifying items that the users may prefer, but may not have b ...

2008

An ontology of virtual humans: Incorporating semantics into human shapes

Daniel Thalmann, Frédéric Vexo, Alejandra Garcia Rojas Martinez, Laurent Moccozet

Most of the efforts concerning graphical representations of humans (Virtual Humans) have been focused on synthesizing geometry for static or animated shapes. The next step is to consider a human body not only as a 3D shape, but as an active semantic entity ...

2007