نتایج جستجو برای: k2
تعداد نتایج: 5516 فیلتر نتایج به سال:
این پایان نامه در چهار فصل تنظیم شده است. در فصل اول به تعاریف، مفاهیم و قضایای اولیه مورد نیاز از جمله مجموعه های مرتب و انواع ترتیب، اعداد ترتیبی و اعداد اصلی، تعاریف جبری، pi-حلقه ها، جبر ویل، کرانداری و نظریه تاب موروثی و ... پرداخته ایم. در فصل دوم مفاهیم بعد گلدی و حلقه گلدی را طرح کرده ایم و ثابت کردیم که اگر m یک مدول با بعد گلدی متناهی باشدو k1,k2 زیر مدول های m باشند بطوریکه اشتراک k...
A Bayesian network is a graphical model that represents a set of random variables and their causal relationship via a Directed Acyclic Graph (DAG). There are basically two methods used for learning Bayesian network: parameter-learning and structure-learning. One of the most effective structure-learning methods is K2 algorithm. Because the performance of the K2 algorithm depends on node...
Finite obstruction set characterizations for lower ideals in the minor order are guaranteed to exist by the Graph Minor Theorem. In this paper we characterize several families of graphs with small feedback sets, namely k1-Feedback Vertex Set, k2-Feedback Edge Set and (k1,k2){Feedback Vertex/Edge Set, for small integer parameters k1 and k2. Our constructive methods can compute obstruction sets f...
The trunk of a knot in S3, defined by Makoto Ozawa, is a measure of geometric complexity similar to the bridge number or width of a knot. We prove that for any two knots K1 and K2, we have tr(K1#K2)= max{tr(K1), tr(K2)}, confirming a conjecture of Ozawa. Another conjecture of Ozawa asserts that any width-minimizing embedding of a knot K also minimizes the trunk of K. We produce several families...
We prove a limit relation for the Dunkl–Bessel function of type BN with multiplicity parameters k1 on the roots ±ei and k2 on ±ei ± ej where k1 tends to infinity and the arguments are suitably scaled. It gives a good approximation in terms of the Dunkltype Bessel function of type AN−1 with multiplicity k2. For certain values of k2 an improved estimate is obtained from a corresponding limit rela...
A distinctive syndrome caused by hypermucoviscous Klebsiella pneumoniae (HMKP) including pyogenic liver abscess (PLA) is now becoming a globally emerging disease. In the present study, 22.8% (84/369) of K. pneumoniae clinical isolates associated with various types of invasive infections were identified as HMKP, with 45.2% associated with PLA. Multivariate regression analysis showed that male pa...
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