Research Publications
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| Temporal autocorrelation of the dynamic on-body radio channel is characterized empirically and theoretically based on measurements. The channel coherence time is found to be approximately 20 to 70~ms for a human subject either walking or running. Using a ... 300+ hours of sleeping BAN channel measurements with characterisation of data in terms of outages with respect to receiver sensitivity. Showing that channel outages are greater than 10% with -100 dBm receiver sensitivity. Relation extraction is the task of extracting semantic relations— such as synonymy or hypernymy—between word pairs from corpus data. Past work in relation extraction has concentrated on manually creating templates to use in directly extracting word pairs ... During the last decade, the Ministry of Health of the Republic of Serbia, a developing country, funded several projects aiming to make the public healthcare system more efficient through the use of information technology (IT). This system development ... In this paper, we study the transmission power to secure connectivity of a network. Instead of requiring all nodes to be connected, we require only that a large fraction (e.g. 95%) be connected, termed the giant component. We show that with this ... In this paper, we present a study in understanding sensing error’s impact on traffic signal control performance. Adaptive traffic signal control systems depend on information from traffic sensors to interpret the state of traffic. Signal timings are ... Consider the following problem: given sets of unlabeled observations, each set with known label proportions, predict the labels of another set of observations, possibly with known label propor- tions. This problem occurs in areas like e-commerce, ... In this paper, we formulate the feature clustering problem as a general Bayesian model and solve it using MCMC. The proposed approach exhibits two advantages over existing methods: Bayesian model handles arbitrary objective functions and MCMC guarantees ... Many computer vision algorithms such as object tracking and event detection assume that a background model of the scene under analysis is known. However, in many practical circumstances it is unavailable and needs to be estimated from cluttered image ... This study investigates the effects of November superstorms on the daytime-evening northern topside ionosphere. We utilize multi-instrument interplanetary and geomagnetic data to analyze the interplanetary shock/electric (E) field events. To assess their ... Tendency of individuals to develop relationships with similar individuals, to form relationships based on mutual acquaintances and proximity, and to form relationships based on common interests are documented in the social science literature as ... This paper presents the design and implementation of SPINdle - a defeasible logic reasoner that is capable to perform efficient and scalable reasoning on defeasible logic theories (including theories with over 1 million rules). The implementation ... Static program analysers typically come with a set of hard-coded checks, leaving little room for the user to add additional properties. In this work, we present a uniform approach to enable the speci cation of new static analysis checks in a concise ... In this paper we show how a non-monotonic rule based system (defeasible logic) can be integrated with numerical computation engines. To this end we simulate a physical system from which we obtain numerical information. The physical system perceives ... Purpose of review. We outline and discuss recent work on auditory displays, covering both auditory alarms that indicate technical or physiological threshold levels, and informative auditory displays that provide a continuous awareness of a patient’s ... Purpose of review. Head-mounted displays (HMDs) are head-worn display devices that project an information display over the wearer’s field of view. This article reviews a recent program of research that investigates the advantages and disadvantages of ... Topic models are a discrete analogue to principle component analysis and independent component analysis that model {\it topic} at the word level within a document. They have many variants such as NMF, PLSI and LDA, and are used in many fields such as ... CNF simplifiers play a very important role in minimising structured problem hardness. Altough they can be used in an in-search process, most of them serve in a pre-search phase and are developed based on the old resolution procedure. Based on our ... |