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Adaptive interactive genetic algorithms with individual interval fitness

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Progress in Natural science:Materials International 2008年第3期18卷 359-365页

作者： Dunwei Gong , Guangsong Guo, Li Lu, Hongmei Ma school of Information and Electrical engineering,{2. university of mining & technology, Xuzhou 2.1008,{2. school of Information and Electrical engineering China University of Mining & Technology Xuzhou 221008 China

It is necessary to enhance the performance of interactive genetic algorithms in order to apply them to complicated optimization prob- lems successfully. An adaptive interactive genetic algorithm with individual interval fitness is proposed in this paper in which an indi- vidual fitness is expressed by an interval. Through analyzing the fitness, information reflecting the distribution of an evolutionary population is picked up, namely, the difference of evaluating superior individuals and the difference of evaluating a population. Based on these, the adaptive probabilities of crossover and mutation operators of an individual are presented. The algorithm proposed in this paper is applied to a fashion evolutionary design system, and the results show that it can find many satisfactory solutions per generation. The achievement of the paper provides a new approach to enhance the performance of interactive genetic algorithms.

关键词： Optimization Genetic algorithm Interaction Interval Probability of genetic operator

Adsorption of oil from waste water by coal:characteristics and mechanism

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mining science and {2. 2010年第5期20卷 778-781页

作者： LI Xiaobing,ZHANG Chunjuan,LIU Jiongtian school of Chemical engineering and {2.,china university of mining & {2.,Xuzhou 2.1116,china [a] school of Chemical engineering technology China University of Mining&Technology Xuzhou 221116 China

The work described here was focused on exploring the potential application of coal to purification of oily waste *** was added to oily waste water as an adsorbent and then removed through a flotation *** allowed economical and highly efficient separation of oil from the waste *** absorption time,coal type,coal particle size distribution,pH value and oil concentration were *** results indicate that oil absorption by a coal increases for a period of 1.5 h and then gradually tends toward an equilibrium *** appears that the absorption capacity of anthracite is more than that of lean coal or lignite,given the same coal particle size *** absorption capacity of a coarse coal fraction is less than that of finer coal,given the same of coal *** absorption capacity of anthracite decreases slightly as the pH increases from 4 to *** adsorption of oil on anthracite follows the Freundlich isothermal adsorption law:given initial oil concentrations of 160.5 or 102..6 mg/L the absorption capacity was 2..8 or 840.0 mg/*** absorption mechanism consists of two kinds of absorption,a physical process assisted by a chemical one.

关键词： oily wastewater waste water separation coal oil adsorption mechanism

A Quick Algorithm for mining Exceptional Rules

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Journal of Systems engineering and Electronics 2002年第2期13卷 71-77页

作者： Sun Haihong , Jiang Hong , Tang Jing & Yang Bingru( Department science and technology, Bank of Shanghai, Shanghai 2.0010, P. R.{2. Information engineering school, university of science and technology, beijing 100083, P. R.{2.)(Received May 2., 2. Department science and technology Bank of Shanghai Shanghai 200010 P. R. China Information engineering school University of Science and Technology Beijing 100083 P. R. China

Exceptional rules are often ignored because of their small support. However, they have high confidence, so they are useful sometimes. A new algorithm for mining exceptional rules is presented, which creates a large itemset from a relatively small database and scans the whole database only one time to generate all exceptional rules. This algorithm is proved to be quick and effective through its application in a mushroom database.

关键词： Exceptional rules Conventional rules Data mining.

Chromium leaching mechanism of coal mine water—a modeling study based on Xuzhou-Datun coal mine district

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mining science and {2. 2010年第1期20卷 97-102页

作者： SHAN Yao QIN Yong, WANG Wenfeng school of Resource and Earth science,{2. university of mining & technology, Xuzhou 2.1116,{2. [a] school of Resource Earth science China University of Mining & Technology Xuzhou 221116 China

In order to investigate chromium contamination of coal mine water, to analyze chromium leaching mechanism and to evaluate environment pollution potential of coal mine water, we perform site investigations, physical and computer modeling in the Xuzhou-Datun coal mine district. The result of our test samples shows that chromium concentration was 9 μg/L in roof leachate and 3 μg/L in coal leachate. The host rock has a higher pollution potential than that of coal seams. Leaching experiments and XRD test results indicate that chromium is released from the process of transforming illite to kaolinite. The pH, pe and temperature of coal mine water affect the chromium leaching behavior. Modeling results suggest that the adsorption of adsorbents controls chromium concentration in coal mine water. The chromium adsorption ratio is quite low in both an acid and in an alkaline environment. Therefore, coal mine water has a high pollution potential. Under other conditions, chromium adsorption is stronger in a neutral water environment, so that chromium concentrations may be very low.

关键词： chromium coal mine water leaching

Indeterminate direction relation model based on fuzzy description framework

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science china(Technological sciences) 2008年第S1期51卷 72-80页

作者： LIU YaoLin1,HE JianHua1,YU Yan2.& TANG XinMing3 1 school of Resource and Environment science,Wuhan {2.,Wuhan 430079,china 2.school of Resource and Environment Engineer,Wuhan {2. of technology,Wuhan 430070,china 3 Chinese Academy of surveying and Mapping,beijing 10083,china school of Resource and Environment science Wuhan University Wuhan 430079 China school of Resource and Environment Engineer Wuhan University of Technology Wuhan 430070 China Chinese Academy of surveying and Mapping Beijing 10083 China

The indetermination of direction relation is a hot topic for fuzzy GIS researchers. The existing models only study the effects of indetermination of spatial objects,but ignore the uncertainty of direction reference framework. In this paper,first a for-malized representation model of indeterminate spatial objects is designed based on quadruple (x,y,A,μ),then a fuzzy direction reference framework is constructed by revising the cone method,in which the partitions of direction tiles are smooth and continuous,and two neighboring sections are overlapped in the transitional zones with fuzzy method. Grounded on these,a fuzzy description model for indeterminate direction relation is proposed in which the uncertainty of all three parts (source object,reference object and reference frame) is taken into account simultaneously. In the end,case studies are implemented to test the rationality and validity of the model.

关键词： direction relation fuzzy description framework fuzzy representation model uncertainty

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预测混合煤燃烧性能的数学模型

燃料化学学报 2004年第6期32卷 641-646页

作者：戴财胜单忠健湖南科技大学化学化工学院湖南湘潭411201 中国矿业大学(北京校区) 北京100083

用热重分析法研究了单种煤的DTG和TG曲线特征,建立了预测混合煤燃烧性能的数学模型。结果表明,各单种煤的DTG曲线呈单峰,峰值温度tmax与其燃料比F的对数呈线性相关关系,tmax=68.86ln(F)+512.2.℃)。由组成混合煤的单种煤的燃料比F可推... 详细信息

用热重分析法研究了单种煤的DTG和TG曲线特征,建立了预测混合煤燃烧性能的数学模型。结果表明,各单种煤的DTG曲线呈单峰,峰值温度tmax与其燃料比F的对数呈线性相关关系,tmax=68.86ln(F)+512.2.℃)。由组成混合煤的单种煤的燃料比F可推断出混合煤的DTG曲线特征,从而预测混合煤的燃烧性能。如果混合煤的煤质指标满足标准煤的煤质指标要求,则当Fmax Fmin≤3.2.时,混合煤的燃烧性能好;当3.2.5.71时,混合煤的燃烧性能较差。

关键词：混合煤燃烧预测数学模型

Degradation of lignite model compounds by the action of white rot fungi

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mining science and {2. 2010年第1期20卷 76-81页

作者： DU Ying, TAO Xiuxiang, SHI Kaiyi, LI Yang school of Chemical engineering and {2., china university of mining & {2., Xuzhou 2.1000, china [a] school of Chemical engineering technology China University of Mining & Technology Xuzhou 221000 China

Three compounds modeled on the lignite structure were chosen for experimental degradation by different fungi strains. Culture conditions and extracellular enzyme activities were optimized. The growth curves of the strains were determined to study mycelium dry weight and protein content changes. Gas chromatography and infrared spectroscopy were used to detect changes of functional groups before and after the action of the fungi on the model compounds. Possible decomposition products and degrada-tion mechanisms were proposed. The research findings show that C. Versicolor and Golden Mushroom can grow in presence of the model compounds. The optimum culture conditions were a pH of 6.0, a carbon-nitrogen ratio of five and a Tween-80 concentration of 0.1%. Newly produced substances were found by gas chromatography. Infrared analysis showed that the model compounds degraded under the action of the microorganisms.

关键词： coal biotransformation white rot fungi mechanism model compound

Synthesis and characterization of Ba_(0.5)Sr_(0.5)Co_(0.8)Fe_(0.2.O_(3-σ)

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Rare Metals 2009年第1期28卷 39-42页

作者： WANG Qibao YUAN Yan HAN Minfang ZHU Peiyu school of Chemical and Environmental engineering China University of Mining and Technology （Beijing） Beijing 100083 China

Perovskite-type Ba0.5Sr0.5Co0.8Fe0.2.3-σ （BSCFO） powders were synthesized using two methods, solid-state reaction （SSR） method and citrate-EDTA complexing method （CC-EDTA）. Then the powders were pressed to green disks of 19 nun in diameter and sintered at 1140℃ for 5 h. The shrinkage rate and relative density of the membranes prepared from the perovskite-type powders were determined and calculated, and the powders and derived membranes were characterized by X-ray diffraction （XRD） and scanning electron microscopy （SEM）. The resuits show that the shrinkage rates of the two kinds of disks are nearly the same （about 10%）. The disks prepared by the SSR method had a bigger grain size and lower relative density than those prepared by the CC-EDTA method. The conductivity of the membranes prepared by the SSR method was about 38 S/cm, higher than that of the membranes prepared by the CC-EDTA method, which was about 30 S/cm, at the same temperature of600℃.

关键词： perovskite-type oxides oxide membrane solid-state reaction complexing method physical properties

mining and Integrating Reliable Decision Rules for Imbalanced Cancer Gene Expression Data Sets

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Tsinghua science and technology 2012年第6期17卷 666-673页

作者： Hualong Yu 1 , Jun Ni 2., Yuanyuan Dan 3 , Sen Xu 4 1. school of Computer science and {2., Jiangsu university of science and technology, Zhenjiang 2.2.03, china 2. Department of Radiology, Carver College of Medicine, The university of Iowa, Iowa City, IA 52.42. USA 3. school of Biology and Chemical {2., Jiangsu university of science and technology, Zhenjiang 2.2.03, china 4. school of Information {2., Yancheng Institute of technology, Yancheng 2.4051, china school of Computer science and {2. Jiangsu University of Science and Technology Zhenjiang 212003 China|c|

There have been many skewed cancer gene expression datasets in the post-genomic era. Extraction of differential expression genes or construction of decision rules using these skewed datasets by traditional algorithms will seriously underestimate the performance of the minority class, leading to inaccurate diagnosis in clinical trails. This paper presents a skewed gene selection algorithm that introduces a weighted metric into the gene selection procedure. The extracted genes are paired as decision rules to distinguish both classes, with these decision rules then integrated into an ensemble learning framework by majority voting to recognize test examples; thus avoiding tedious data normalization and classifier construction. The mining and integrating of a few reliable decision rules gave higher or at least comparable classification performance than many traditional class imbalance learning algorithms on four benchmark imbalanced cancer gene expression datasets.

关键词： cancer gene expression data class imbalance paired differential expression genes decision ruleensemble learning majority voting