当前主流的搜索引擎主要是以与用户查询的相关度来顺序返回搜索结果的,用户往往需要花费较长的时间从结果列表中进行选择。为了解决这个问题,针对搜索引擎返回的标题和摘要信息,构造有向图表示,并在此基础上实现了一种高效的网页聚类原...当前主流的搜索引擎主要是以与用户查询的相关度来顺序返回搜索结果的,用户往往需要花费较长的时间从结果列表中进行选择。为了解决这个问题,针对搜索引擎返回的标题和摘要信息,构造有向图表示,并在此基础上实现了一种高效的网页聚类原型系统(efficient web clustering system,EWCS)。该系统将搜索引擎返回的结果按照一定的标准分类呈现给用户,用户选择感兴趣的类别进行浏览,从而较好地满足了用户对查询速度和准确度的需求。试验结果表明该算法具有一定的可行性和较高的准确率。展开更多
XPS shake-up satellite peaks (XPS shake-up) and HMO calculations of some conjugatedring carbon-hydrogen compounds have been reported. The shake-up spacing and probabilityusing HMO calculation accord with XPS experimen...XPS shake-up satellite peaks (XPS shake-up) and HMO calculations of some conjugatedring carbon-hydrogen compounds have been reported. The shake-up spacing and probabilityusing HMO calculation accord with XPS experimental results. The relation between shake-up transition of the excited atom and its chemical activity, namely, the order of its atomicfree valence, has been established.展开更多
文摘当前主流的搜索引擎主要是以与用户查询的相关度来顺序返回搜索结果的,用户往往需要花费较长的时间从结果列表中进行选择。为了解决这个问题,针对搜索引擎返回的标题和摘要信息,构造有向图表示,并在此基础上实现了一种高效的网页聚类原型系统(efficient web clustering system,EWCS)。该系统将搜索引擎返回的结果按照一定的标准分类呈现给用户,用户选择感兴趣的类别进行浏览,从而较好地满足了用户对查询速度和准确度的需求。试验结果表明该算法具有一定的可行性和较高的准确率。
文摘XPS shake-up satellite peaks (XPS shake-up) and HMO calculations of some conjugatedring carbon-hydrogen compounds have been reported. The shake-up spacing and probabilityusing HMO calculation accord with XPS experimental results. The relation between shake-up transition of the excited atom and its chemical activity, namely, the order of its atomicfree valence, has been established.
