For a high-speed mobile robot following a road, hallway, or other type of path, modern robot motion controllers must know the coarse shape of the path, such as whether it curves left or right, or on which sides it is bounded by dangerous obstacles such as walls. In this paper, towards addressing the perceptual needs of high-speed mobile robot controllers, we classify these coarse shapes directl...

Context awareness is necessary for diverse user-oriented services. Especially, place awareness (logical location context awareness) is an essential method for a location-based service (LBS) that is widely provided to smartphone users. However, GPS-based place awareness is only valid when not only a user is located at outdoor positions where a GPS signal is strong enough but also the information...

The objective of this work is to develop an understanding of the relationship between mobility metrics obtained outside of the clinic or laboratory and the context of the external environment. Ten subjects walked with an inertial sensor on each shank and a wearable camera around their neck. They were taken on a thirty minute walk in which they mobilized over the following conditions; normal pat...

The effect of active exploration upon memory for spatial location of an event was assessed for children at 2 age levels. Each child took a walk through the same unfamiliar hallway in search of a hidden object which he was later asked to relocate. Half the children were accompanied by an adult holding their hand (passive condition), while the other half proceeded on their own with an adult follo...

In this paper, we propose an algorithm that enables robots to improve their spatial-semantic representation of the environment by engaging users in dialog. The algorithm aims to reduce the entropy in maps formulated based upon userprovided natural language descriptions (e.g., “The kitchen is down the hallway”). The robot’s available informationgathering actions take the form of targeted questio...

Collecting and maintaining radio fingerprint for wireless indoor positioning systems involves considerable time and labor. We have proposed the quick radio fingerprint collection (QRFC) algorithm which employed the built-in accelerometer of Android smartphones to implement step detection in order to assist in collecting radio fingerprints. In the present study, we divided the algorithm into mov...

“If ever there were a field in which machine intelligence seemed destined to replace human brainpower, the stock market would have to be it. Investing is the ultimate numbers game, after all, and when it comes to crunching numbers, silicon beats gray matter every time. Nevertheless, the world has yet to see anything like a Wall Street version of Deep Blue, the artificially intelligent machine t...

The Artificial Intelligence group at Bielefeld University has been developing the virtual human Max to study how the natural conversational behavior of humans can be modeled and made available for A.I. systems. This research activity embarks on the goal of building holistic, embodied agents that can engage with humans in face-toface conversation and demonstrate many of the same communicative be...

OBJECTIVE To compare energy cost of walking (ECW) and prosthesis-related perceived mobility with the Marlo Anatomical Socket (MAS(®)) and the Ischial Containment (IC) Socket. METHOD Transfemoral (TF) amputees were enrolled in the study. ECW tests were conducted inside, in a hallway with a regular floor surface. Subjects had to walk back and forth on a 61m linear course at their own self-selec...