Metal price is one of the most important parameters in the calculation of cut- off grade. The cut- off grade has the main role in determination of mine layout. Mine layout actuates mineable reserve, mine life and economic profitability. Not considering the uncertainty in metal prices can lead to a non-optimal layout. In this paper optimum underground mine layout is determined by expected utilit...

Association rule is a data mining technique that has a huge number of applications. One of the crucial steps in association rule is the extraction of frequent itemsets. This research is inspired by simple appealing visualization of itemsets frequencies in the simple well known two dimension matrix representations. This paper proposes a new procedure to extract maximal frequent itemsets called M...

The approaches for extraction and representation of knowledge from textual user requirements could be summarized in two groups: i) when we have in mind an end model and seek, mine and represent knowledge for it. In short, this approach can be defined as “knowledge driven from a target model”; ii) when we have in mind knowledge in a text, and seek an appropriate model to represent it. The interm...

Mining is associated with poor safety due to pressure relief gas emission from the goaf during production period. The aim of this study was explore a case Wangjialing coal mine 12322 working face in Shanxi, China, through physical simulation and field observation. characterized by overlying strata fracture process mining. A mathematical model source migration finite element COMSOL software were...

A a common chronic illness among children and youth, affects one school-aged child in 11, or two to three students in a class of 30. Asthma accounts for 14 million lost school days each year. Students with asthma miss instruction while in the health room and may not be fully alert due to lack of sleep from night­ time asthma symptoms. Schools often lose funding for student absences. Schools are...

Deep coal seams are characterized by large stress, high gas pressure, and low permeability. The disaster threatens the safe production of mine seriously. Gas extraction crossing-seam boreholes from floor roadway (GECMBFR) can reduce pressure content seam gas, which is main measure to prevent disaster. Considering Klinkenberg effect, governing equations adsorption/desorption-diffusion, seepage, ...

The Infostations wireless data network architecture features discontinuous coverage and ultra-high radio rates for burst transfers of information between base and mobile. It has been shown previously that the infostations architecture can greatly increase the capacity of wireless data systems at the expense of increased delivery delay. In this work we explicitly consider the multiple access iss...

Relation classification is a crucial ingredient in numerous information extraction systems seeking to mine structured facts from text. We propose a novel convolutional neural network architecture for this task, relying on two levels of attention in order to better discern patterns in heterogeneous contexts. This architecture enables endto-end learning from task-specific labeled data, forgoing t...

An infrequent pattern is an item set or a rule whose support is less than the minimum support threshold. The extraction of infrequent patterns is called infrequent pattern mining. This work mainly concentrates on the infrequent pattern mining. It gives a survey on methods for mining infrequent patterns from different types of data set. This paper reviews different research papers and presents t...