英德
有道
百度
谷歌
图片
维基
百科
联合熵 [lián hé shāng]
combination entropy
- 用该方法分别计算词条在语料库中各个句子内发生的概率和包含该词条的句子在语料库中的概率，在此基础上计算它们的联合熵，依据联合熵选取停用词。
The idea of this method is to calculate the probability that the word occurs in each sentence of corpus, and calculate the probability that the sentences include the word occuring in corpus, then calculate the entropy of these probabilities, and select stop words according to the entropy. - 摘要推导出在近亲交配下一对等位基因群体母子间的基因型联合概率分布列；定义了在近亲交配下母子间的基因型联合信息熵；讨论了在世代交替中母子间的基因型联合信息熵的性质及其信息学解释；并用计算机模拟验证。
This paper deduces the associated probability distribution of a pair alleles population between a female genotypes and its descendant genotypes in inbreeding, defines the associated genotype entropy between a female parental genotypes and its descendant genotypes in inbreeding, demonstrates its character and interpretation of informatics in the generation change, and tests them by imitation of computer. - 摘要以不完备信息系统为研究对象，对传统粗糙熵及相应知识约简算法的局限性进行了分析；通过引入概率计算公式，重新定义了不完备熵概念，能够更加精确地度量知识的不确定性；利用粗糙熵和不完备熵联合对属性重要性进行了定义。
For incomplete information system, this paper first analyzed the limitation of traditional rough entropy and correlative knowledge induction algorithm, redefined the incomplete entropy by introducing a probability computing formula, could describe the uncertainty of knowledge more precisely, and then used rough entropy and new incomplete entropy to define attribute significance.
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