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We present an automatic approach to tree annotation in which basic nonterminal symbols are alternately split and merged to maximize the likelihood of a training treebank. Starting with a simple X-bar grammar, we learn a new grammar whose non-terminals are subsymbols of the original nontermi-nals. In contrast with previous work, we are able to split various(More)
From 1973 through 1992, 426 cases of human brucellosis were reported in California, of which 98% were laboratory confirmed. Brucella melitensis was identified in 185 cases (78.7% of the bacteriologically typed cases). Hispanics accounted for 81% of the cases from 1983 to 1992 compared with 65% during the previous decade (P < .01). The population-adjusted(More)
In March 1993, an 11-month-old neutered male wolf-dog hybrid with a 5-day history of progressive neurologic signs was determined to have rabies. The animal was currently vaccinated for rabies with a USDA-approved canine rabies vaccine. One month prior to becoming ill, the animal was observed carrying a dead skunk in its enclosure in a rabies-endemic(More)
Linear perspective is a good approximation to the format in which the human visual system conveys 3D scene information to the brain. Artists expressing 3D scenes, however, create nonlinear projections that balance their linear perspective view of a scene with elements of aesthetic style, layout and relative importance of scene objects. Manipulating the many(More)
To perform automatic, unconscious inference, the human brain must solve the binding problem by correctly grouping properties with objects. Temporal binding models like SHRUTI already suggest much of how this might be done in a connectionist and localist way by using temporal synchrony. We propose a set of alternatives to temporal synchrony mechanisms that(More)