长模式 meaning in English
long mode
Examples
- The longest pattern or patterns from the
最长模式或来自 - Produce large candidate sets so it ' s low efficiency when the algorithms are used to mine low support threshold long - patterns
产生大量的候选集因此基于候选集的约束算法在挖掘低支持度、长模式的规则时效率低下。 - They examined 50 songs per culture , and for each beginning phrase they computed the duration ratio of the first note to the second note and counted how often phrases started with a short - long pattern ersus other possible patterns such as long - short , or equal duration
他们检查每种文化50支歌曲，并且为计算每个歌曲开始的第一小节到第二小节里短-长模式出现的频率，对照组是计算每个歌曲开始的第一小节到第二小节里长-短模式，相同的或者其它模式出现的频率。 - An efficient algorithm qais is proposed that uses the efficient method to reduce database access activity , and present a novel algorithm aiu based on this algorithm , it is fit for mining association rules and incremental updating . it is especially effective in vldb , mining long patterns , and high support . the perfermance of qais / aiu is verified on the basis of synthetic data , experiments show that the proposed algorithm can mine association rules more efficiently by not generating candidate itemsets and reducing the redundancy of frequent itemsets while generating association rules
然而目前大多数挖掘关联规则的算法往往必需多次扫描事务数据库才能达到要求的目标，这样重复性的数据库存取动作将会导致过多的执行时问浪费在i o动作上，另外在频繁集生成规则时现有的算法没有考虑到规则的大量冗余，为了解决这个问题本文提出了一个不需要生成候选集同时有效的去除生成规则时产生大量冗余的算法qais ，来提高关联规则生成的速度，并且在此算法基础上提出了新颖的关联规则增量更新算法aiu ，通过应用合成数据验证了qais aiu算法的有效性，由试验结果来看这个方法确实能更有效且准确地获得事务数据库的关联规则，尤其适合挖掘超大数据库中高支持度下长模式的挖掘。 - Abstract : an efficient parallel global router using random optimization that is independent of net ordering is roposed . parallel approaches are described and strategies guaranteeing the routing quality are discussed . the wire length model is implemented on multiprocessor , which enables the algorithm to approach feasibility of large - scale problems . timing - driven model on multiprocessor and wire length model on distributed processors are also presented . the parallel algorithm greatly reduces the run - time of routing . the experimental results show good speedups with no degradation of the routing quality
文摘:设计实现了一个高效的线长模式下基于多处理机的并行总体布线器.通过对非时延驱动模式下串、并行算法的总运行时间和求解时间的比较,表明该并行算法能够在保证求解质量无明显变化的前提下大大加快总体布线算法的求解速度.同时,也提出了基于分布式体系结构的并行总体布线算法