inverse document frequency 中文意思是什麼

inverse document frequency 解釋
倒排頻度
  • inverse : adj 相反的；逆的；翻轉的，倒轉的。 an inverse network 倒置（電）網路。 inverse time 逆時，反時。 ...
  • document : n 1 文獻，文件；公文。2 證件，證書，憑證。3 記錄影片，記實小說。4 【航海】船舶執照。vt 1 用文件[...
  • frequency : n. 1. 屢次，頻仍，頻繁。2. （脈搏等的）次數，出現率；頻度；【物理學】頻率，周率。
  1. 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

    常見的排行方法之一是評估字詞的分佈與出現頻率，即詞頻與文件頻率倒數，然後為字詞建立權值，代表各字詞在個別文件內的重要性。
  2. 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

    並將信息檢索領域中用於計算關鍵字與相關文獻相關權重的idf （ inversedocumentfrequency ）公式應用於自動分類過程，結合對中文網頁的分析結果，得出具有可調參數的權重計算公式，根據公式要求，設計並建立了用於保存分類訓練結果的分類權重向量庫。
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