Universität BielefeldTechnische FakultätNI

CRC 673 -- Alignment in Communication

The Bielefeld CRC 673, Alignment in Communication, investigates special modes of coordination, called alignment. Alignment covers the adaptation processes among agents which are subconscious and do not lead to explicit negotiation and control of those engaged in a common enterprise. Alignment thus conceived can be observed in human-human communication with respect to the use of words, especially neologisms, the creation of new senses, copied patterns of syntax, recycled referring terms, the evolution of patterns in dialogue structure such as the use of ellipses and fragments.

Projects in CRC 673


Alignment of Attention in Mediated Communication

Do you prefer audio books over printed ones, and if so, what is the advantage? Why is video conferencing so awkward? Why do you rely on SMS messages as a means of communication in some situations but on e-mailing in others? Did you ever notice that you raise your eyebrows when asking people a question – even on the telephone? And did you ever wonder how to make your point in a discussion most convincingly?

read more »

3D Perception for Human-Robot-Cooperation

The focus of the CRC 673 project "Adaptive Alignment in Human-Robot-Cooperation" is the collaborative task execution of humans and robots. For that reason, it is necessary that the robot is able to perceive objects in a complex scene. Using new structured-light depth cameras (e.g. Microsoft Kinect), it is possible to generate a 3D point cloud.

read more »

Gestalt Learning as a Basis for Adaptive Alignment

CLM What principles enable rapid and adaptive alignment in coordination?

This project investigates Gestalt principles and their generalization from the perceptual into the action/cooperation domain for modeling adaptive alignment and its functional replication in human-robot cooperation. Departing from learning algorithms for dynamic Gestalt formation in layered recurrent networks (Competitive Layer Model CLM), we develop a hybrid, hierarchical architecture for adaptive alignment in cooperation that integrates elements from connectionist and symbol-based representations. We evaluate its performance in a human-robot cooperation scenario involving two anthropomorphic hands mounted on a bimanual robot platform.

read more »

Representation of manual actions for adaptive alignment in human-robot-cooperation


Priming of relevant motor degrees of freedom to achieve rapid alignment of motor actions can be conceptualised as the rapid selection of low-dimensional action manifolds that capture the essential motor degrees of freedom. The present project investigates the construction of such manifolds from training data and how observed action trajectories can be decomposed into traversals of manifolds from a previously acquired repertoire. To this end we focus on manual actions of an anthropomorphic hand and combine Unsupervised Kernel Regression (UKR, a recent statistical learning method) with Competitive Layer Models (CLM, a recurrent neural network architecture) to solve the tasks of manifold construction and dynamic action segmentation.

read more »

Dextrous Manipulation

Together with the advances in building anthropomorphic robot hands, we are facing the question of how to dexterously control such complex robots with up to 20 degrees of freedom in up to five fingers and a wrist. Implementing fixed grasp and manipulation programs does not lead to satisfying results.
In our work, we propagate a manifold representation of such movements recorded from human demonstration. The main idea is to construct manifolds embedded in the finger joint angle space which represent the subspace of hand postures associated with a specific manipulation movement.

read more »

Adaptive alignment in human-robot-cooperation

Alignment is not restricted to support language, dialog functions and the execution of speech production. Similar mechanisms support the cooperative execution of more general actions. Besides the extension of alignment into the action domain, we hypothese that the formation of alignment is adaptive: Repetitions of actions facilitate the alignment and its adaptation is important for acquiring team expertise. In our opinion, adaptation and adaptive alignment paves the way for smooth and effective common acting.

read more »

Upcoming

  • Nils Hachmeister
    30.05.2012 - 16:00
    Q1 - 101
  • Hannes Riechmann
    06.06.2012 - 16:00
    Q1 - 101

Calendar

«  

May

  »
M T W T F S S
 
1
 
2
 
3
 
4
 
5
 
6
 
7
 
8
 
9
 
10
 
11
 
12
 
13
 
14
 
15
 
16
 
17
 
18
 
19
 
20
 
21
 
22
 
23
 
24
 
25
 
26
 
27
 
28
 
29
 
30
 
31
 
 
 
 
Add to calendar