Previous weighted frequent pattern (WFP) mining algorithms are not suitable for data streams for they need multiple database scans. In this paper, we present an efficient algorithm SWFP-Miner to mine weighted freque...Previous weighted frequent pattern (WFP) mining algorithms are not suitable for data streams for they need multiple database scans. In this paper, we present an efficient algorithm SWFP-Miner to mine weighted frequent pattern over data streams. SWFP-Miner is based on sliding window and can discover important frequent pattern from the recent data. A new refined weight definition is proposed to keep the downward closure property, and two pruning strategies are presented to prune the weighted infrequent pattern. Experimental studies are performed to evaluate the effectiveness and efficiency of SWFP-Miner.展开更多
9月5日,世界粮食计划署(WFP)召开WFP管理计划2015—2017第三次非正式磋商(Informal Consultation on WFP Management plan 2015—2017)会。WFP执行干事卡津女士向执行局成员介绍了最新修订的WFP管理计划2015—2017,会议主要针对WF...9月5日,世界粮食计划署(WFP)召开WFP管理计划2015—2017第三次非正式磋商(Informal Consultation on WFP Management plan 2015—2017)会。WFP执行干事卡津女士向执行局成员介绍了最新修订的WFP管理计划2015—2017,会议主要针对WFP管理计划中新增的资金环境与资源预测进行了有关说明.并讨论了工作计划、项目支持与行政支出预算预付款融资和其他特别账户等议题。展开更多
2015年5月15日,世界粮食计划署(WFP)在其总部召开WFP新评估政策第一次非正式磋商(First infornlal onsultation on the new WFP Evalua-tion Policy2016-2021)。会上,WFP执行干事办公室主任Jim Harvey向参会的各成员介绍了WFP即...2015年5月15日,世界粮食计划署(WFP)在其总部召开WFP新评估政策第一次非正式磋商(First infornlal onsultation on the new WFP Evalua-tion Policy2016-2021)。会上,WFP执行干事办公室主任Jim Harvey向参会的各成员介绍了WFP即将推出的“WFP新评估政策20162021”的有关背景、运行环境、工作重点以及实施步骤等。展开更多
文摘Previous weighted frequent pattern (WFP) mining algorithms are not suitable for data streams for they need multiple database scans. In this paper, we present an efficient algorithm SWFP-Miner to mine weighted frequent pattern over data streams. SWFP-Miner is based on sliding window and can discover important frequent pattern from the recent data. A new refined weight definition is proposed to keep the downward closure property, and two pruning strategies are presented to prune the weighted infrequent pattern. Experimental studies are performed to evaluate the effectiveness and efficiency of SWFP-Miner.
文摘9月5日,世界粮食计划署(WFP)召开WFP管理计划2015—2017第三次非正式磋商(Informal Consultation on WFP Management plan 2015—2017)会。WFP执行干事卡津女士向执行局成员介绍了最新修订的WFP管理计划2015—2017,会议主要针对WFP管理计划中新增的资金环境与资源预测进行了有关说明.并讨论了工作计划、项目支持与行政支出预算预付款融资和其他特别账户等议题。
文摘2015年5月15日,世界粮食计划署(WFP)在其总部召开WFP新评估政策第一次非正式磋商(First infornlal onsultation on the new WFP Evalua-tion Policy2016-2021)。会上,WFP执行干事办公室主任Jim Harvey向参会的各成员介绍了WFP即将推出的“WFP新评估政策20162021”的有关背景、运行环境、工作重点以及实施步骤等。