There are many methods for finding association rules in very large data. However it is well known that most general association rule discovery methods find too many rules, which include a lot of uninteresting rules. Furthermore, the performances of many such algorithms deteriorate when the minimum support is low. They fail to find many interesting rules even when support is low, particularly in...

The guided spline approach to surface construction separates surface design and surface representation by constructing local guide surfaces and sampling these by splines of moderate degree. This paper explains a construction based on tessellating the domain into V-shaped regions so that the resulting C surfaces have G transitions across the boundaries of the V-shapes and consist of tensor-produ...

This paper discusses the path towards asbtractive summarization and proposes a new knowledge-based methodology called KBABS as a step forward on this path. We propose to use both world knowledge, to identify useful content, and task knowledge, to filter out unreliable content, to generate more accurate summaries. This approach was implemented for guided summarization. The evaluation shows that,...

A new generation of current and wave testing tanks is required to simulate more realistic sea conditions at larger scales. One means of producing a current is by using groups of impellers arranged around the perimeter of a circular tank. Each propeller produces a single flow velocity which may be different to its neighbours. These differences can lead to a stepped or curved plan view velocity p...

Symmetric distribution properties such as support size, support coverage, entropy, and proximity to uniformity, arise in many applications. Recently, researchers applied different estimators and analysis tools to derive asymptotically sample-optimal approximations for each of these properties. We show that a single, simple, plug-in estimator—profile maximum likelihood (PML)– is sample competiti...

The vertical profile of atmospheric depth is an important element in extensive air shower studies. The depth of shower maximum is one of the most important characteristics of the shower. In the fluorescence technique of shower detection, the geometrical reconstruction provides the altitude of shower maximum, so that an accurate profile of atmospheric depth is needed to convert this altitude to ...

We study the use of parallax microlensing to separate the effects of the mass function of dark massive halo objects (MHOs or ‘machos’) on the one hand and their spatial distribution and kinematics on the other. This disentanglement is supposed to allow a much better determination of the two than could be achieved entirely on the basis of the durations of events. We restrict our treatment to the...

Model for efficiency optimization of electric elevator drive is presented in this paper. It combines two strategies for efficiency optimization: Loss model control and Search control. Search control technique is used in a steady state of drive and loss model during transient processes. As a result, power and energy losses are reduced, especially when load torque is significant less related to i...

Electronic tour guides have been developed to personalise guided tours. Also, in contrast to traditional tours, electronic tour guides allow their users to abandon or modify tours at any time. Research as to whether users take advantage of these added capabilities is currently not available. A field trial was conducted comparing the behaviour of tourists as they were using a Planner providing a...