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(yīng)用比較函數(shù),將它與條件中規(guī)定的值進(jìn)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(duì)關(guān)鍵字頻度進(jìn)行累加的方法,本文提出了基于信息熵的文本關(guān)鍵詞測(cè)度函數(shù),通過(guò)對(duì)關(guān)鍵詞函數(shù)值進(jìn)行比較,獲取對(duì)文本分類最具影響性的關(guān)鍵詞序列;同時(shí),針對(duì)web上異質(zhì)、非結(jié)構(gòu)化信息的特點(diǎn),該分類算法還考慮了超文本標(biāo)記對(duì)關(guān)鍵詞權(quán)值的影響。