seqeconstraint(TraMineR)
seqeconstraint()所属R语言包：TraMineR
Setting time constraints and the counting method
设置时间限制和计算方法
译者：生物统计家园网 机器人LoveR
描述----------Description----------
Function used to set time constraints and the counting method in methods (seqe..) for event sequences such as seqefsub for searching frequent subsequences or seqeapplysub for checking occurrences of subsequences.
功能用于设置时间限制和计算方法，在方法（seqe..）的事件序列，如seqefsub搜索频繁子序列或seqeapplysub检查出现的子序列。
用法----------Usage----------
seqeconstraint(maxGap = -1, windowSize = -1, ageMin = -1,
ageMax = -1, ageMaxEnd = -1, countMethod = 1)
参数----------Arguments----------
参数：maxGap
The maximum time gap between two events
最大的两个事件之间的时间间隔
参数：windowSize
The maximum time span accepted for subsequences
子序列的最大可接受时间跨度为
参数：ageMin
Minimal start time position allowed for subsequences. Ignored when equal to -1 (default).
最小允许的子序列的开始时间位置。忽略等于-1（默认）。
参数：ageMax
Maximal start time position allowed for subsequences. Ignored when equal to -1 (default).
最大允许的子序列的开始时间位置。忽略等于-1（默认）。
参数：ageMaxEnd
Maximal end time position allowed for subsequences. Ignored when equal to -1 (default).
最大允许的子序列的结束时间位置。忽略等于-1（默认）。
参数：countMethod
By default, subsequences are counted only one time by sequence ('COBJ' method). Alternative counting methods can be called by setting this argument to 'CDIST_O', 'CWIN', 'CMINWIN' or 'CDIST' respectively. See details.
默认情况下，子序列只计算一个时间序列（'COBJ'方法）。可以将此参数设置为'CDIST_O'，'CWIN'，'CMINWIN'或'CDIST'分别被称为另类的计算方法。查看详细信息。
Details
详细信息----------Details----------
maxGap, windowSize, ageMin, ageMax and ageMaxEnd. If so, two events should not be separated by more than maxGap and the whole subsequence should not exceed a windowSize time span. The other parameters specify the start and end age of the subsequence, it should start between ageMin and ageMax and finish before ageMaxEnd. Parameters ageMin, ageMax and ageMaxEnd are interpreted as the number of positions (time units) from the beginning of the sequence.
maxGap，windowSize，ageMin，ageMax和ageMaxEnd。如果是这样的话，不应该分开的两个事件，以上maxGap，整个序列不应该超过一个windowSize的的时间跨度。其他参数指定的子序列的开始和结束的年龄，它应该开始ageMin和ageMax之间和前完成ageMaxEnd。参数ageMin，ageMax和ageMaxEnd被解释为位置（时间单位）的数量从开始的序列。
There are 5 options for the countMethod argument. (1) By default, subsequences are counted by occurrence by object ("COBJ" method). Alternatives are (2) "CDIST_O" (distinct occurrences with possibility of event-timestamp overlap), (3) "CWIN" (one occurrence of span-window), (4) "CMINWIN" (number of minimal windows of occurrence) and (5) "CDIST" (distinct occurrences without event-timestamp overlap). See references.
有5个选项countMethod参数。 （1）默认情况下，子序列计数发生的对象（"COBJ"方法）。替代品（2）"CDIST_O"（不同的发生与可能事件时间戳重叠的），（3）"CWIN"（一出现的跨度窗口），（4）"CMINWIN"（数最小的Windows的发生）和（5）"CDIST"的（不同的发生没有事件时间戳重叠的）。见参考文献。
值----------Value----------
A constraint object containing one item per constraint type.
约束类型包含一个项目，每一个约束对象。
参考文献----------References----------
Sequential Patterns Proceedings of the KDD'2001 Workshop on Temporal Data Mining, San Francisco.
参见----------See Also----------
seqefsub, seqeapplysub
seqefsub，seqeapplysub
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注：
注1：为了方便大家学习，本文档为生物统计家园网机器人LoveR翻译而成，仅供个人R语言学习参考使用，生物统计家园保留版权。
注2：由于是机器人自动翻译，难免有不准确之处，使用时仔细对照中、英文内容进行反复理解，可以帮助R语言的学习。
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发表于 2012-10-1 11:37:39
