Search results for "Mining"

A Scheme for Continuous Input to the Tsetlin Machine with Applications to Forecasting Disease Outbreaks

2019

In this paper, we apply a new promising tool for pattern classification, namely, the Tsetlin Machine (TM), to the field of disease forecasting. The TM is interpretable because it is based on manipulating expressions in propositional logic, leveraging a large team of Tsetlin Automata (TA). Apart from being interpretable, this approach is attractive due to its low computational cost and its capacity to handle noise. To attack the problem of forecasting, we introduce a preprocessing method that extends the TM so that it can handle continuous input. Briefly stated, we convert continuous input into a binary representation based on thresholding. The resulting extended TM is evaluated and analyzed…

Stereotype threat and lift effects on perceived ability and motor task performance of high school physical education students: the moderating role of…

2016

This study investigated the effects of stereotype threat and lift on perceived ability and motor task performance, and tested the moderating effects of stereotype endorsement and domain identification. One hundred and twenty French high school students were randomly assigned to control, stereotype threat, or stereotype lift conditions, in a 3 (condition) × 2 (sex) study design. The results revealed a stereotype lift effect on boys’ performance moderated by domain identification and a stereotype threat effect on girls’ perceived ability moderated by domain identification and stereotype endorsement. Perceived ability did not mediate the effects of stereotype threat and lift on performance. Th…

Five Ways in Which Computational Modeling Can Help Advance Cognitive Science

2019

Abstract There is a rich tradition of building computational models in cognitive science, but modeling, theoretical, and experimental research are not as tightly integrated as they could be. In this paper, we show that computational techniques—even simple ones that are straightforward to use—can greatly facilitate designing, implementing, and analyzing experiments, and generally help lift research to a new level. We focus on the domain of artificial grammar learning, and we give five concrete examples in this domain for (a) formalizing and clarifying theories, (b) generating stimuli, (c) visualization, (d) model selection, and (e) exploring the hypothesis space.

Lexical verbs in a medical case-report wordlist

2018

Clinical case reports or clinical cases (CRs) are, perhaps, the most widely read text type in medicine, since they contain a detailed description of the patient’s medical history and symptoms and thus furnish ample teaching material for physicians-in-training. For non-native speakers of English in medicine, autonomous learning is often restricted because of a lack of medical lexicon, poor academic vocabulary, and weak lexical verb use. Here, we present the results of an investigation of lexical verbs: their distribution, classification, and contextual use in the different sections of the genre CRs. We suggest that lexical verbs with contextual use should be included in medical dictionaries …

Deterministic Linkage as a Preceding Filter for Other Record Linkage Methods

2015

Deterministic record linkage (RL) is frequently regarded as a rival to more sophisticated strategies like probabilistic RL. We investigate the effect of combining deterministic linkage with other linkage techniques. For this task, we use a simple deterministic linkage strategy as a preceding filter: a data pair is classified as ‘match' if all values of attributes considered agree exactly, otherwise as ‘nonmatch'. This strategy is separately combined with two probabilistic RL methods based on the Fellegi–Sunter model and with two classification tree methods (CART and Bagging). An empirical comparison was conducted on two real data sets. We used four different partitions into training data a…

Smoking and small, dense low-density lipoproteins.

2013

Thermoelectric effects on electrically conducting particles in liquid metal

2015

International audience; The present paper deals with the thermoelectric effect on a solid electrically conducting particle immersed in a liquid metal under a temperature gradient. Superimposition of a static magnetic field induces thermoelectric magnetic (TEM) forces both in the solid and in the liquid. Considering a simple spherical particle, the electric current density and the corresponding forces can be calculated analytically. Two cases are considered according to the orientation of the magnetic field with respect to the temperature gradient. The corresponding flow fields around the particle are calculated in both cases. Grain motion is analyzed in the light of in-situ experiments perf…

Gas bubbles and liquid metal flow influenced by uniform external magnetic field

2017

Permanent magnet centrifugal pump for liquid aluminium stirring

2016

In liquid aluminium processing, it is important to ensure continuous mixing of the molten metal to ensure temperature and composition homogeneity, and to improve degassing of the metal. Aluminium and its alloys are often processed in special degassing chambers after preparation in order to avoid segregation and to improve material structure, and to avoid gas pores. This extra step increases material costs and may cause material contamination. In this article, we present the idea to use centrifugal permanent magnet stirrer to induce liquid aluminium motion through thick furnace wall by creating high-speed local liquid metal jet. Analytical estimation, numerical modelling and experimental tes…

Permanent magnet dipole stirrer for aluminium furnaces

2018

Use of permanent magnet systems for metallurgical applications have been proposed before. We have continued development of such systems by investigation use of single magnetic dipole which is realized as permanent magnet cylinder. Magnet is magnetized orthogonal to its axis and has been mounted to the side of the liquid metal reservoir. System first was modelled using small scale experiment with galinstan melt. Velocity distributions and flow patterns in reservoir using Ultrasound Doppler Anemometer were acquired and will be presented here. Additionally, numerical model using Comsol and Cenos modelling software were developed alongside analytical, non-dimensional estimation calculations. Ex…