A large number of metrics are available to evaluate the quality of rank web pages in information retrieval (IR). These metrics can be classified in different groups as follows: Binary Relevance, Graded Relevance, Rank Correlation Coefficient, and User Oriented Measures. Each group of metrics has difference characteristics. However, metrics that contains in the same group have the similar charac...

Background: Riboflavin, flavin mononucleotide (FMN) and flavin adenine dinucleotide (FAD) are cofactors in oxidation-reduction reactions. The aim of this study was to compare a direct high performance liquid chromatography (HPLC) method with an indirect enzymatic method to assess flavin status and establish reference intervals. The HPLC method was used to assess prevalence of flavin deficiency ...

Information searching is the most popular activity in Internet. Usually the search engine provides the search results ranked by the relevance. However, for a certain purpose that concerns with information credibility, particularly citing information for scientific works, another approach of ranking the search engine results is required. This paper presents a study on developing a new ranking me...

A composite collaborative filtering algorithm for personalized recommend will be presented to solve the original Collaborative Filtering algorithm problem including“None of User Starting ”and “Data Sparsity”, and the Spearman rank correlation coefficient will be used as a main correlation coefficient. Top-M commended is going to be used to get the final results in this paper. At last, we will v...

BACKGROUND Gene networks have generated a massive explosion in the development of high-throughput techniques for monitoring various aspects of gene activity. Networks offer a natural way to model interactions between genes, and extracting gene network information from high-throughput genomic data is an important and difficult task. OBJECTIVES The purpose of this study is to construct a two-wa...

Node localization technology is a key technology of WSN, and this paper proposes a rank sequence localization algorithm based on Voronoi and Spearman. First of all, the paper divides the localization space of WSN according to the Voronoi diagram, takes the polygon’s points, center of gravity and the boundary intersection as virtual anchor nodes, and builds the rank sequence list for virtual anc...

background and purpose: this study aimed to evaluate the relationship between organizational structure and organizational performance from the perspective of the staff of 115 emergency departments of mazandaran province, iran. materials and methods: in this study, data were collected from the emergency personnel of different hospitals of mazandaran province, iran in 2014. moreover, data on two ...

BACKGROUND Assessments of health-related quality of life and particularly utility values are important components of health economic analyses. Several instruments have been developed to measure utilities. However no consensus has emerged regarding the most appropriate instrument within a therapeutic area such as chronic pain. The study compared two instruments - EQ-5D and SF-6D - for their perf...

Measures of rank correlation are commonly used in statistics to capture the degree of concordance between two orderings of the same set of items. Standard measures like Kendall’s tau and Spearman’s rho coefficient put equal emphasis on each position of a ranking. Yet, motivated by applications in which some of the positions (typically those on the top) are more important than others, a few weig...

in this work, 137cs activity concentration of soil in five depths and in six meteorology stations in terms of bq/kg has been measured. for each thirty soil's samples, parameters such as kind of soil, density and hydraulic coefficient of transmission were determined. correlation coefficient between 137cs activity concentration and raining average, hydraulic coefficient of transmission and s...