Point location in spatial subdivision is one of the most studied problems in computational geometry. In the case of triangulations of Rd, we revisit the problem to exploit a possible coherence between the query-points. For a single query, walking in the triangulation is a classical strategy with good practical behavior and expected complexity O(n1/d) if the points are evenly distributed. Based ...

This paper examines the optimal time to adapt to climate change. We take the perspective of a farmer growing a crop in a stochastic environment. The farmer faces stochastic seasonal growth, which makes harvest at the end of any season a random variable. Within a season, crop biomass is assumed to grow according to a continuoustime Itô process. The standard deviation rate of the Itô process is i...

Appropriate bias is widely viewed as the key to e cient learning and generalization I present a new algorithm the Incremental Delta Bar Delta IDBD algorithm for the learning of appropri ate biases based on previous learning experience The IDBD algorithm is developed for the case of a simple linear learning system the LMS or delta rule with a separate learning rate parameter for each input The I...

This paper presents a new approach for fitting a 3D morphable model to images of faces, using self-adapting feature layers (SAFL). The algorithm integrates feature detection into an iterative analysis-bysynthesis framework, combining the robustness of feature search with the flexibility of model fitting. Templates for facial features are created and updated while the fitting algorithm converges...

This paper describes SimpleNLG for German, a surface realisation engine for German based on SimpleNLG (Gatt and Reiter, 2009). Several features of the syntax of German and their implementation within the current framework are discussed, with a special focus on word order phenomena. Grammatical coverage of the system is demonstrated by means of selected examples.

Wilson and Humanski (1993) have recently reported evidence that adapting to low temporal frequency sinewave gratings yields little threshold elevation for briefly presented test stimuli. We postulated that brief stimuli may be detected by a transient channel which would be minimally affected by a low temporal frequency adapting pattern. We therefore measured the effect of adaptation on briefly ...