Please select from the left product classification table you have to check the product classifications 請(qǐng)從左邊產(chǎn)品分類(lèi)列表中選擇你要查看的產(chǎn)品分類(lèi)當(dāng)前產(chǎn)品分類(lèi)為
Introduction : as of august 1st , gongbei customs began using a new entry passenger luggage articles classification table and duty tariff table 8月1日起,拱北海關(guān)開(kāi)始執(zhí)行新修訂的"入境旅客行李物品稅則歸類(lèi)表"及"完稅價(jià)格表" 。
In this paper , a rs - based model , which starts up from trained documents for web documents classification , is introduced . taking advantage of the rs theory ' s features in efficient dealing with vague , indiscernible , and fuzzy information , we sets up a series of layered subsystems to reduce redundant properties from classification tables . in this way , we can not only efficiently reduce the dimension of documents but also keep the information of keywords set 本文提出了一種基于粗糙集理論的web文本分類(lèi)模型,該模型從已分類(lèi)的訓(xùn)練文本出發(fā),建立一系列不同層次的文本分類(lèi)子系統(tǒng),利用roughset理論有效處理不精確、不確定、含糊信息的特性,對(duì)分類(lèi)決策表進(jìn)行屬性約簡(jiǎn),既有效降低了web文本的維度,又保持關(guān)鍵詞集合中的信息。