在基于粗糙集理论的知识发现中,知识约简是核心内容。因此,本文从理论上分析了相容决策表中嵌套决策粒度约简的关系,得出并证明了粗决策粒度的相对 D 核一定是细决策粒度相对 D 核的子集,粗决策粒度的一个相对D约简在满足相容性的条件...在基于粗糙集理论的知识发现中,知识约简是核心内容。因此,本文从理论上分析了相容决策表中嵌套决策粒度约简的关系,得出并证明了粗决策粒度的相对 D 核一定是细决策粒度相对 D 核的子集,粗决策粒度的一个相对D约简在满足相容性的条件下一定可以扩张成细决策粒度的一个约简。反之,细决策粒度的一个约简一定可以缩减为粗决策粒度的一个约简。研究结果对基于决策表的知识约简和知识发现有一定的实际意义。展开更多
Packaging has advanced from being preserver of products to being a visible billboard and a silent salesman for products. This has made the manufacturers to keep repackaging their products especially toothpaste. The pa...Packaging has advanced from being preserver of products to being a visible billboard and a silent salesman for products. This has made the manufacturers to keep repackaging their products especially toothpaste. The paper therefore examines perceived influence of the toothpaste repackaging on the purchase predisposition of the residents of Owo Local Government Area using Mymy, Close Up, Macleans and Pepsodent as case study. Survey design was employed for the study while two hundred copies of questionnaire were administered to two hundred respondents who were selected through purposive sampling. The finding revealed that there is significant influence of change in packaging of tooth paste on the consumers＇ purchase predisposition which may invariably lead to purchase of these brands of tooth paste. The study therefore recommends that manufacturers should introduce changes in elements of tooth paste carefully and gradually in order to study the consumers＇ reaction to such change.展开更多
An object segment similarity function is taken into account from the continuous media frames to measure the individual streaming profit of certain segment versions of a media object.Therefore,a new segment version-bas...An object segment similarity function is taken into account from the continuous media frames to measure the individual streaming profit of certain segment versions of a media object.Therefore,a new segment version-based transcoding(SVT)mechanism is derived for a quality of service(QoS)of client-centric media streaming in wireless mobile networks.The derived function utilizes the fuzzy similarity of certain segment versions of an object.This mechanism provides the effectiveness of reduction of the stream startup latency among segment versions,and the average access of each version.Thus,the proposed segment version transcoding mechanism reduces packet loss which in turn increases streaming performance and throughput.The performance of the partitioned segment versions is simulated and some segment versions are completed.The simulation results show that the proposed mechanism outperforms the other mechanisms in average cache hit ratio and in average startup latency ratio.展开更多
文摘在基于粗糙集理论的知识发现中,知识约简是核心内容。因此,本文从理论上分析了相容决策表中嵌套决策粒度约简的关系,得出并证明了粗决策粒度的相对 D 核一定是细决策粒度相对 D 核的子集,粗决策粒度的一个相对D约简在满足相容性的条件下一定可以扩张成细决策粒度的一个约简。反之,细决策粒度的一个约简一定可以缩减为粗决策粒度的一个约简。研究结果对基于决策表的知识约简和知识发现有一定的实际意义。
文摘Packaging has advanced from being preserver of products to being a visible billboard and a silent salesman for products. This has made the manufacturers to keep repackaging their products especially toothpaste. The paper therefore examines perceived influence of the toothpaste repackaging on the purchase predisposition of the residents of Owo Local Government Area using Mymy, Close Up, Macleans and Pepsodent as case study. Survey design was employed for the study while two hundred copies of questionnaire were administered to two hundred respondents who were selected through purposive sampling. The finding revealed that there is significant influence of change in packaging of tooth paste on the consumers＇ purchase predisposition which may invariably lead to purchase of these brands of tooth paste. The study therefore recommends that manufacturers should introduce changes in elements of tooth paste carefully and gradually in order to study the consumers＇ reaction to such change.
基金Project(2011)financially supported by Research Funds of Chonbuk National University,Korea
文摘An object segment similarity function is taken into account from the continuous media frames to measure the individual streaming profit of certain segment versions of a media object.Therefore,a new segment version-based transcoding(SVT)mechanism is derived for a quality of service(QoS)of client-centric media streaming in wireless mobile networks.The derived function utilizes the fuzzy similarity of certain segment versions of an object.This mechanism provides the effectiveness of reduction of the stream startup latency among segment versions,and the average access of each version.Thus,the proposed segment version transcoding mechanism reduces packet loss which in turn increases streaming performance and throughput.The performance of the partitioned segment versions is simulated and some segment versions are completed.The simulation results show that the proposed mechanism outperforms the other mechanisms in average cache hit ratio and in average startup latency ratio.
