A small area study of cancer incidence, 1974-1986, near 20 high power television (TV) and frequency modulation (FM) radio transmitters in Great Britain was carried out to place in context the findings of an earlier study around the Sutton Coldfield transmitter. The national database of postcoded cancer registrations was used with population and socioeconomic data from the 1981 census. Cancers e...

System aspects of an anti-intruder multistatic radar based on impulse radio ultrawideband (UWB) technology are addressed. The investigated system is composed of one transmitting node and at least three receiving nodes, positioned in the surveillance area with the aim of detecting and locating a human intruder (target) that moves inside the area. Such systems, referred to also as UWB radar senso...

In this paper, we describe the Template Matcher, a system built at SRI to provide robust natural-language interpretation in the Air Travel Information System (ATIS) domain. The system appears to be robust to both speech recognition errors and unanticipated or difficult locutions used by speakers. We explain the motivation for the Template Matcher, describe in general terms how it works in compa...

The project goal is to collect and deliver a corpus of speech data that supports DARPA SL~ system development. As of February 1991, SRI has set up a hardware and software environment for the collection of spoken interactions with a simulated Air Travel Information System (ATIS), established a data collection procedure, collected and dis~buted prototype data, and evaluated the prototype data wit...

I describe the TreeBanker, a graphical tool for the supervised training involved in domain customization of the disambiguation component of a speechor languageunderstanding system. The TreeBanker presents a user, who need not be a system expert, with a range of properties that distinguish competing analyses for an utterance and that are relatively easy to judge. This allows training on a corpus...

As dialog systems evolve to handle unconstrained input and for use in open environments, addressee detection (detecting speech to the system versus to other people) becomes an increasingly important challenge. We study a corpus in which speakers talk both to a system and to each other, and model two dimensions of speaking style that talkers modify when changing addressee: speech rhythm and voca...

In modern societies the demand for mobility is increasing daily. Hence, one challenge to researchers dealing with traffic and transportation is to find efficient ways to model and predict traffic flow, even if the behaviour of people in traffic is not a trivial problem. Increasingly more people travel longer distances and choose more complex routes and transportation means. Thus, the social nat...

This paper introduces a new type of unsupervised learning algorithm, based on the alignment of sentences and Harris’s (1951) notion of interchangeability. The algorithm is applied to an untagged, unstructured corpus of natural language sentences, resulting in a labelled, bracketed version of the corpus. Firstly, the algorithm aligns all sentences in the corpus in pairs, resulting in a partition...

The paper deals with principles and properties of single frequency networks of digital television and radio transmitters. Basic definitions and contextual relationships (guard interval, area of SFN, influence of used modulation parameters etc.) are explained.

Many of the evening session papers served to describe local implementations of ATIS domain systems and to provide local "glass-box" diagnostic evaluations to complement the NIST "black box" scoring. In some cases, these had the appearance of "nit-picking". However, since our collective intent was to develop and implement an evaluation procedure, the criticisms were generally constructive, and e...