Represents the supported compare functions in the 類類型中受支持的比較函數(shù)。
The objective of the apply object is to apply the compare function on the value picked from the bag returned by 返回)中選擇的值應用比較函數(shù),將它與條件中規(guī)定的值進行比較。
With difference from the way that traditional methods perform by accumulating the frequency of keywords . we propose a new metrical function that employs the rs - based entropy by comparing function values to measure the feature of web pages . besides , according to the unstructured and heterogenous characteristics of www , the effect of hypertext tags to keywords " weigh has been taken into account to obtain the most effective keywords for document classification 有別于傳統(tǒng)的對關鍵字頻度進行累加的方法,本文提出了基于信息熵的文本關鍵詞測度函數(shù),通過對關鍵詞函數(shù)值進行比較,獲取對文本分類最具影響性的關鍵詞序列;同時,針對web上異質(zhì)、非結構化信息的特點,該分類算法還考慮了超文本標記對關鍵詞權值的影響。