Radial, space-filling (RSF) techniques for hierarchy visualization have several advantages over traditional node-link diagrams, including the ability to efficiently use the display space while effectively conveying the hierarchy structure. Several RSF systems and tools have been developed to date, each with varying degrees of support for interactive operations such as selection and navigation. ...

1 This research has been supported by the Social Science Research Council (SSRC), the Russell Sage Foundation (RSF), and the Berkeley Center of Chinese Studies (CCS). We would like to thank the Education Bureau of the Beijing’s Eastern City District, the Institute of Higher Education of Tsinghua University, and the Data Sea Survey Institute for their support while in China. 2 Corresponding auth...

In competitive consumer markets, data mining for customer relationship management faces the challenge of systematic knowledge discovery in large data streams to achieve operational, tactical and strategic competitive advantages. Methods from computational intelligence, most prominently artificial neural networks and support vector machines, compete with established statistical methods in the do...

This paper describes a visual interactive simulation system of technological processes intended for the development and execution of simulation and emulation models for automated process control systems in coal mining. A set of simulation models of various subsystems of a mine was developed with the help of this simulation system. These models united to create simulation environment. Simulation...

Exploiting the working face in coal mines using a super long mining length and large height has become important for intensive production with high yield efficiency. The paper develops roof structure model to analyze influence of 195 m, 242.4 376 m lengths at Wangzhuang Coal Mine China as case study. fracture characteristics, migration law, strata behavior law under different are compared studi...

Utility mining is the study of itemset mining from the consideration of utilities. It is the utility-based itemset mining approach to find itemsets conforming to user preferences. Modern research in mining high-utility itemsets (HUI) from the databases faces two major challenges: exponential search space and database-dependent minimum utility threshold. The search space is extremely vast when t...

A drainage roadway was constructed in the fractured zone beside an air-return roadway of a mining site. However, drainage roadways serve only one working face and are discarded after mining, thus weakening sustainable mining practices. To improve the sustainability at mining sites, this paper proposes a new drainage roadway that can serve two adjacent working faces. A schematic layout of the pr...

Data collection and analysis in web mining faces certain unique challenges. Due to a variety of reasons inherent in web browsing and web logging, the likelihood of bad or incomplete data is higher than conventional applications. The analytical techniques in web mining need to accommodate such data. Fuzzy and rough sets provide the ability to deal with incomplete and approximate information. Fuz...

Data mining research faces two great challenges: i. Automated mining ii. Mining of distributed data. Conventional mining techniques are centralized and the data needs to be accumulated at central location. Mining tool needs to be installed on the computer before performing data mining. Thus, extra time is incurred in collecting the data. Mining is 4 done by specialized analysts who have access ...