inverse document frequency meaning in Chinese

倒排频度

A common ranking method ? term frequency / inverse document frequency ? considers the distribution of words and their frequencies , then generates numerical weights for words that signify their importance in individual documents
常见的排行方法之一是评估字词的分布与出现频率，即词频与文件频率倒数，然后为字词建立权值，代表各字词在个别文件内的重要性。
By utilizing the idf ( inverse document frequency ) formula in automatic categorization process , which was used in information retrieval field to calculate the relativity term weight between keywords and relevant documents , and combining with analysis result of chinese web page , the formula carrying adjustable parameter for calculating the correlative degree is obtained . categorization correlative degree vector library , which is used to conserve categorization - training result , is designed and established to meet demands of the formula
并将信息检索领域中用于计算关键字与相关文献相关权重的idf ( inversedocumentfrequency )公式应用于自动分类过程，结合对中文网页的分析结果，得出具有可调参数的权重计算公式，根据公式要求，设计并建立了用于保存分类训练结果的分类权重向量库。