Web挖掘技术在搜索引擎中的应用与实现

介绍W eb挖掘技术及搜索引擎相关知识,并通过PageRank-pro W eb结构挖掘器和页面解析器中文分词两个实现来描述W eb挖掘技术在搜索引擎中的实现过程。     

邓小平理论研究的新成果——读《时代的丰碑——邓小平理论产生的思想渊源与历史条件》

《时代的丰碑———邓小平理论产生的思想渊源与历史条件》一书 ,选题新颖 ,视角独特 ,内容丰富 ,可读性强。其研究方法、框架体系的建构都有独到之处。     

完善我国现行搜查制度浅论

搜查是发现犯罪和揭露犯罪的重要侦查手段,搜查过程也是最容易发生侵害被搜查者合法权利的阶段。我国现行搜查制度存在较多的缺陷,既不利于惩罚犯罪目的的实现,更不利于保障人权目的的实现。修正现行搜查制度势在必行,也是建设尊重和保障人权的法治国家的内在要求。     

坚持不懈扎实努力发挥优势建设好部级科技查新站

为创建教育部科技查新站江南大学长期坚持不懈开展工作,学校领导重视,制定目标,狠抓落实;加大投入,加强文献信息资源建设;培养人才、建立专家咨询队伍;完善规章制度和规范工作流程.文章对江南大学争创教育部科技查新站所具有的学科特色优势、行业龙头高校优势、新校区建设优势、查新实践经验优势和地域优势等五大优势进行了详细论述.     

中国农民工工资走势:1979-2010

中国农民工的工作参与和市场地位一直是备受关注的话题。以个体工作搜寻角度切入,利用2013年和2014年两期\     

越库中心选址模型与启发式算法

越库配送网络具有高运作效率、低库存等特性,同时对时间要求较高,故研究带时间窗口约束的越库选址路径问题。采用时间窗模糊化处理方法定义客户满意度函数,在能力和载重等约束下,建立越库选址路径问题（CDLRP）的多目标规划模型,通过合理选择越库中心并安排配送路径从而达到降低成本、提高客户满意度和提高配送效率三个目标。针对此多目标问题,设计了嵌套灰关联分析的多目标禁忌搜索算法寻求较好的Pareto最优前沿,最后通过算例仿真验证了优化模型和求解算法的可行和有效性。     

基于柔性资源约束的前摄性项目调度优化研究

不确定环境中,项目进度计划鲁棒性的高低直接影响项目能否顺利实施。本文研究了具有随机活动工期的柔性资源约束下的前摄性项目调度优化问题,目标是在柔性资源和项目工期的约束下,借助对活动开始时间合理的进行安排进而得到拥有最大鲁棒性的进度计划。首先对研究问题进行界定;随后构建优化模型,并根据问题NP-hard属性和模型特点设计了双层嵌套禁忌搜索启发式算法,通过内外两层交互搜索寻找满意解;最后通过一个实际案例对本文研究进行说明,并分析关键参数对进度计划鲁棒性的影响,得到如下结论:相对于资源无柔性情况下的项目进度计划而言,资源具备柔性后得到的项目进度计划的鲁棒性更高,具有更强的抗干扰能力,能够保证项目稳定执行;同时,项目进度计划鲁棒性分别随着项目工期的延长、资源可用量的增加或资源柔性的提高而上升。     

External knowledge search,absorptive capacity and radical innovation in high-technology firms

Open innovation and absorptive capacity are two concepts based on the idea that companies can leverage the knowledge generated externally to improve their innovation performance. The aim of this paper is to analyse the joint effect of open innovation and absorptive capacity on a firm's radical innovation. Open innovation is expressed in terms of external search breadth and depth strategies and absorptive capacity is described by distinguishing between potential and realized absorptive capacity. In order to test our hypotheses, we carried out empirical research in firms operating in high-technology industries. The results indicate that internal routines and processes for absorbing external knowledge help explain radical innovation as they show a significant effect of potential and realized absorptive capacity. Also, there is a moderating effect of absorptive capacity on open innovation. Specifically, potential absorptive capacity exerts a positive effect on the relationship between external search breadth and depth and radical innovation. Realized absorptive capacity moderates the influence of external search breadth. These findings confirm the complementary nature of absorptive capacity and open innovation search strategies on radical innovation.     

Comparison of Four New General Classes of Search Designs

A factor screening experiment identifies a few important factors from a large list of factors that potentially influence the response. If a list consists of m factors each at three levels, a design is a subset of all possible 3 ^m runs. This paper considers the problem of finding designs with small numbers of runs, using the search linear model introduced in Srivastava (1975). The paper presents four new general classes of these 'search designs', each with 2 m −1 runs, which permit, at most, two important factors out of m factors to be searched for and identified. The paper compares the designs for 4 ≤ m ≤ 10, using arithmetic and geometric means of the determinants, traces and maximum characteristic roots of particular matrices. Two of the designs are found to be superior in all six criteria studied. The four designs are identical for m = 3 and this design is an optimal design in the class of all search designs under the six criteria. The four designs are also identical for m = 4 under some row and column permutations.     

概念检索在因特网中的应用及比较研究

本文从概念检索的概念介绍入手,简介了概念检索在因特网中的应用情况,并对目前的几个具有概念检索功能的中文搜索引擎进行了比较研究,对结果进行分析,发现这几个搜索引擎在一定程度上实现了概念检索,但效果都不大理想,概念检索的理论研究与实际应用情况存在一段差距。