A hash technique to improve ip address lookup 地址查找的研究
They may use hashing techniques or arithmetically offset the character set to unreadable or unprintable characters 它們可能使用哈希技術(shù),或者對字符集進行算術(shù)偏移,將字符變?yōu)椴豢勺x字符或不可輸出字符。
Considering the defects of typical algorithm for mining frequent itemsets , this dissertation puts forward hy algorithm which is designed to mine association rules and based on the hash technique and the optimized transaction reduction technique 針對經(jīng)典頻繁項集挖掘算法的不足,提出了進行關(guān)聯(lián)規(guī)則數(shù)據(jù)挖掘的基于散列技術(shù)和優(yōu)化的事務(wù)壓縮技術(shù)的hy算法。
Besides hash technique used for normal object adaption , more effective means is carried out for in - process object invocation . there are three choices of optimization , which provide different trade - off levels between the efficiency and sematics of corba object invocation 另一方面,我們對一類經(jīng)常進行的對象訪問? ?同一進程內(nèi)對象訪問,進行了優(yōu)化,并在corba語義和訪問效率之間提供了三種靈活的方案。
2 . we introduced a new polygon periodic discrete curvature function based on curve continue curvature concept in 2d contour matching , the periodic discrete curvature has local , rotation and translation invariant . applying efficient techniques to find the proper matching substrings , we also applied the hashing technique to find long matching substrings 周期性離散曲率函數(shù)具有和原有曲率相似的位移、旋轉(zhuǎn)、縮放等特性,為提高匹配的準確度,利用高斯函數(shù)進行平滑處理,取得了較好的結(jié)果,同時該方法具有直觀、速度快等優(yōu)點,在2d輪廓曲線的匹配中,具有實用可靠的用途。