原因是很多时候我们其实只是想要top n个结果,一些结果明显较差的也进行了复杂的相关性计算,而weak-and算法通过计算每个词的贡献上限来估计文档 的相关性上限,从而建立一个阈值对倒排中的结果进行减枝,从而得到提速的效果。 wand算法首先要估计每个词对相关性贡献的上限,最简单的相关性就是TF*IDF,一般query中词的TF均...
To estimate the surface buoyancy flux (w′θv′¯|s, needed to compute M), we use dropsonde humidity, temperature and wind data at 20 m height and apply the Coupled Ocean-Atmosphere Response Experiment (COARE) bulk flux algorithm version 3.6 (refs. 50,51). For the SST, we extrapo...
The problem of actually estimating the size of these uncertainties (for a given choice of an algorithm for the neutrino momenta reconstruction) is the central problem of any physical analysis from the actual or simulated data of the process and cannot be resolved here. We take into account the...
We present a deterministic, polynomial algorithm that reduces the conjugacy search problem in braid group. The algorithm is based on the decomposition of braids into products of canonical factors and gives a partial factorization of the secret: a divisor and a multiple. The tests we performed on ...
The main research based on new generation of DNA measured under the foreword technology, magnanimous reads measured from the beginning the foreword and retests the foreword the research.In view of splicing and assembly algorithm improvement, and algorithm result analysis and contrast.[translate] ...