bringing gaze awareness to desktop videoconferencing have relied on hardware solutions. Here, the authors describe their software approach, which tracks participants ’ head and eye movements using vision techniques, then uses this information to graphically place the

The Web provides different ways to communicate and perform activities that vary from simple to sophisticated: using forums on websites, online shopping, orchestrating Web Services. All of them involve processing data about the user, be it technical (e.g., the version of the user’s browser or the IP address) or personal information (name, address, gender, credit card number, etc.). In order to give the user control over their data on the Web, P3P, the Platform for Privacy Preferences, [5] was officially recommended by the World Wide Web Consortium in 2002. P3P is a language and a protocol allowing websites to describe data practices: what data is collected, what for, how long it will be stored and what parts of the data are exposed to other parties. These policies are declarative and non-executable, which leads to the topic of presented work: How to make Web-based systems comply with declared policies? How to make systems policy-aware?

Lecture 10: The semantics of diathesis alternations

combination of local linear PCA projections. However, conventional PCA does not correspond to a probability density, and so there is no unique way to combine PCA models. Previous attempts to formulate mixture models for PCA have therefore to some extent been ad hoc. In this paper, PCA is formulated within a

available training examples from cancer and normal patients, we build a classifier suitable for genetic diagnosis, as well as drug discovery. Previous attempts to address this problem select genes with correlation techniques. We propose a new method of gene selection utilizing Support Vector Machine methods

It has previously been suggested that neurons with line and edge selectivities found in primary visual cortex of cats and monkeys form a sparse, distributed representation of natural scenes, and it has been reasoned that such responses should emerge from an unsupervised learning algorithm

An ad hoc network is a collection of wireless computers (nodes), communicating among themselves over possibly multihop paths, without the help of any infrastructure such as base stations or access points. Although many previous ad hoc network routing protocols have been based in part on distance

algorithm for digital inpainting of still images that attempts to replicate the basic techniques used by professional restorators. After the user selects the regions to be restored, the algorithm automatically fills-in these regions with information surrounding them. The fill-in is done in such a way

We attempt to recover a function of unknown smoothness from noisy, sampled data. We introduce a procedure, SureShrink, which suppresses noise by thresholding the empirical wavelet coefficients. The thresholding is adaptive: a threshold level is assigned to each dyadic resolution level

be used to provide in vivo real-time maps of blood oxygenation in the brain under normal physiological conditions. BOLD contrast adds an additional feature to magnetic resonance imaging and complements other techniques that are attempting to provide positron emission tomographylike measurements related