samplesize 中文意思是什麼
samplesize
解釋
樣本容量-
A popular solution toimprove the speed and scalability of the association rule mining is todo the algorithm on a random sample instead of the entire database. buthow to effectively define and efficiently estimate the degree of errorwith respect to the outcome of the algorithm, and how to determine the samplesize needed are entangling researches until now. in this paper, an effective and efficient algorithm is given based on the pac probably approximate correct learning theory to measure and estimatesample error
關聯規則挖掘作為數據挖掘的核心任務之一，由於其任務本身的復雜性通常需要多次整個掃描數據庫才能完成挖掘任務且頻繁模式可能產生組合爆炸，使得從原始的大規模數據集上抽取一部分樣本，在其上尋找用戶感興趣的近似規則成為目前提高演算法效率和可擴展性的一種簡單有效的現實可行方法之一。 -
Then, a new adaptive, on - line, fast samplingstrategy - multi - scaling sampling - is presented inspired by mra multi - resolution analysis and shannon sampling theorem, for quicklyobtaining acceptably approximate association rules at appropriate samplesize. both theoretical analysis and empirical study have showed that thesampling strategy can achieve a very good speed - accuracy trade - off
但是，取樣策略必須在演算法的效率和結果的精確性之間進行很好的折中， 「如何確定合適的樣本大小使得運行於其上的關聯規則挖掘滿足精確性的要求取樣復雜性」成為這一方法的關鍵難解問題。
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