Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Computers that understand how you feel

14.10.2008
A navigation system able to provide emergency services with the quickest route while at the same time taking stress into account; this is an example of a new type of dialogue system developed by PhD candidate Trung Bui of the University of Twente. His dialogue system recognizes the user’s emotions and is able to react to them.

Dialogue systems are computer systems which communicate with humans and which are used especially for information provision such as in the speaking computer that provides travel information. Normally these computers do not take human emotions into account even though this is an important component of human interaction.

The problem with human emotions is that they are often difficult to interpret, and that is especially so for a computer. Raising one’s voice can, for example, indicate enthusiasm but it can also be a sign of anger. We require extra information to be sure which of the two emotions is present. Human beings are trained to combine various types of information (which may be quite vague) and still be able to draw the correct conclusions. Dealing with uncertainties is however difficult to program into computer software.

Taking emotions into account

Bui developed a dialogue system that – unlike others – could take emotions into account. To do this, he used a mathematical technique developed in the 1960s for controlling factory processes called Partially Observable Markov Decision Process (POMDP). He demonstrated that this technique was suitable for integrating the user’s emotions into a dialogue system because it could deal with uncertainties. The method performs better than existing systems as long as it is tested with small-scale dialogue problems. However, for larger problems the method requires too much calculating power. That is why Bui developed a hybrid strategy which combines the Dynamic Decision Network (DDN) technique with POMDP. In contrast to the latter, the DDN-POMDPs split dialogue systems into two levels. They make a choice between looking far ahead and seeing whether the necessary calculating power is available.

To illustrate the effectiveness of the DDN-POMDP, Bui applied it to a navigation system for emergency services that took the stress experienced by the user into account. The navigation system receives input from a separate stress module that measures an emergency worker’s stress levels, taking these into account when the user is in communication with the system. Whenever the user’s stress levels become raised, the system will anticipate, for example, that the user is more likely to make mistakes and for that reason will request confirmation more often.

Wiebe van der Veen | alfa
Further information:
http://hmi.ewi.utwente.nl

More articles from Information Technology:

nachricht Ultra-precise chip-scale sensor detects unprecedentedly small changes at the nanoscale
18.01.2017 | The Hebrew University of Jerusalem

nachricht Data analysis optimizes cyber-physical systems in telecommunications and building automation
18.01.2017 | Fraunhofer-Institut für Algorithmen und Wissenschaftliches Rechnen SCAI

All articles from Information Technology >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Quantum optical sensor for the first time tested in space – with a laser system from Berlin

For the first time ever, a cloud of ultra-cold atoms has been successfully created in space on board of a sounding rocket. The MAIUS mission demonstrates that quantum optical sensors can be operated even in harsh environments like space – a prerequi-site for finding answers to the most challenging questions of fundamental physics and an important innovation driver for everyday applications.

According to Albert Einstein's Equivalence Principle, all bodies are accelerated at the same rate by the Earth's gravity, regardless of their properties. This...

Im Focus: Traffic jam in empty space

New success for Konstanz physicists in studying the quantum vacuum

An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Sustainable Water use in Agriculture in Eastern Europe and Central Asia

19.01.2017 | Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

 
Latest News

Tracking movement of immune cells identifies key first steps in inflammatory arthritis

23.01.2017 | Health and Medicine

Electrocatalysis can advance green transition

23.01.2017 | Physics and Astronomy

New technology for mass-production of complex molded composite components

23.01.2017 | Process Engineering

VideoLinks
B2B-VideoLinks
More VideoLinks >>>