Haptic technology Air vortex rings are donut-shaped air pockets that are concentrated gusts of air. Focused air vortices can have the force to blow out a candle or disturb papers from a few yards away. Two specific companies have done research using air vortices as a source for non-contact haptic feedback. In 2013, Disney worked on a technology they called AIREAL. This system delivered non-contact haptic feedback through the use of air vortex rings. According to Disney, AIREAL helps users experience textures and "touch" virtual 3D objects in free space. This is all without the need for a glove or any other
Word-sense disambiguation is that similar senses occur in similar contexts, and thus senses can be induced from text by clustering word occurrences using some measure of similarity of context, a task referred to as word sense induction or discrimination. Then, new occurrences of the word can be classified into the closest induced clusters/senses. Performance has been lower than for the other methods described above, but comparisons are difficult since senses induced must be mapped to a known dictionary of word senses. If a mapping to a set of dictionary senses is not desired, cluster-based evaluations (including measures of entropy and purity) can