General Aviation (GA) accident statistics indicate that visual flight rules (VFR) flight into instrument meteorological conditions (IMC) is a major safety hazard within general aviation. Little research has been conducted to identify the factors that influence VFR pilots’ decisions to risk flying into deteriorating weather. As accident reports provide a naturalistic source of such information, ...

Many historical newspapers are being digitized. We aim to support access to them via text analysis of the OCRd content. However, the OCR includes many errors; so extracting meaningful content from it is difficult. A pipeline of processing steps is proposed. Here, we describe the first two steps: segmentation and genre identification. The segmentation procedure based on headings was quite succes...

We consider the problem of predicting how a user will continue a given initial text fragment. Intuitively, our goal is to develop a “tab-complete” function for natural language, based on a model that is learned from text data. We consider two learning mechanisms that generate predictive models from collections of application-specific document collections: we develop an N-gram based completion m...

Dear Sir,?Dr. Bryden in liis " Vital Statistics" makes reference to my opinion that the well water at Meean Meer was the cause of typhoid fever in the 85th regiment there from 1868 to 1870. The enclosed extracts from the annual medical reports of the regiment are herewith forwarded, in the hope that their bearing on Dr. Bryden's "generalisations," and the importance of the subject nt the presen...

This paper describes a technique for classifying TV broadcast video using Hidden Markov Model (HMM) [1]. Here we consider the problem of discriminating five types of TV programs, namely commercials, basketball games, football games, news reports, and weather forecasts. Eight frame-based audio features are used to characterize the low-level audio properties, and fourteen clip-based audio feature...

In the transportation literature in general and the travel behaviour literature specifically, there is no consensus on the representation of weather in behavioural models, ranging from studies that use direct meteorological measurements, such a continuous variable for inches of rainfall or temperature, to indicator variables (which themselves are often subjectively derived) for qualitative weat...

This paper reports on a method that learns the temporal co-observability relationships for exemplar views of a dynamic environment collected during long-term robotic mapping. These relationships are efficiently captured using a Chow-Liu tree approximation and allow one to predict which exemplars will be observed by the robot given the robot’s recent observations. For example, these learned rela...

A study on durational phenomena in list like enumerations in German is presented. Due to its highly structured and uniform nature this rather specialized utterance type seems especially wellsuited for investigating principles of the rhythmical organization of speech. A corpus extracted from radio weather reports is used in order to investigate phenomena like prefinal lengthening and effects of ...

Internet portals are gateways to the World Wide Web, which offer an amalgamation of services, like search engines, online shopping information, email, news, weather reports, stock quotes, community forums, maps, travel information, etc. Furthermore, with the arrival of the Mobile Web, they are also frequently used in Ambient Intelligence scenarios. This paper will discuss basic design considera...

The bibliometric measure impact factor is a leading indicator of journal influence, and impact factors are routinely used in making decisions ranging from selecting journal subscriptions to allocating research funding to deciding tenure cases. Yet journal impact factors have increased gradually over time, and moreover impact factors vary widely across academic disciplines. Here we quantify infl...