نتایج جستجو برای: jaccard similarity coefficient

تعداد نتایج: 274076  

Journal: :Applied and environmental microbiology 2005
Wail M Hassan Shiao Y Wang Rudolph D Ellender

The goal of the study was to determine which similarity coefficient and statistical method to use to produce the highest rate of correct assignment (RCA) in repetitive extragenic palindromic PCR-based bacterial source tracking. In addition, the use of standards for deciding whether to accept or reject source assignments was investigated. The use of curve-based coefficients Cosine Coefficient an...

Journal: :به نژادی گیاهان زراعی و باغی 0
بیتا خوانساری نژاد دانشجوی سابق کارشناسی ارشد، گروه علوم باغبانی و فضای سبز، دانشکدۀ علوم و مهندسی کشاورزی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج محمدرضا حسندخت دانشیار، گروه علوم باغبانی و فضای سبز، دانشکدۀ علوم و مهندسی کشاورزی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج وحیده ناظری دانشیار گروه علوم باغبانی و فضای سبز، دانشکدۀ علوم و مهندسی کشاورزی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج

in this study, the genetic diversity of 25 iranian saffron genotypes from three species (crocus speciosus, crocus cancellatus and crocus sativus) has been evaluated using 16 morphological traits and rapd marker. c. sativus was different with speciosus in the leaf number per plant, tepal length, flower weight, inflorescence stem height and the stigma length, but had no significant difference wit...

2015
Shivapratap Gopakumar Tu Dinh Nguyen Truyen Tran Dinh Q. Phung Svetha Venkatesh

Stability in clinical prediction models is crucial for transferability between studies, yet has received little attention. The problem is paramount in high dimensional data, which invites sparse models with feature selection capability. We introduce an effective method to stabilize sparse Cox model of time-to-events using statistical and semantic structures inherent in Electronic Medical Record...

Journal: :علوم باغبانی ایران 0
اله داد سلیم پور دانشجوی سابق کارشناسی ارشد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران علی عبادی استاد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران محمدرضا فتاحی مقدم دانشیار، پردیس کشاورزی و منابع طبیعی دانشگاه تهران مهدی حدادی نژاد دانشجوی دکتری، پردیس کشاورزی و منابع طبیعی دانشگاه تهران

almond is one of the most valuable horticultural nut crops in the world with iran being amongst the most important regions of its distribution. rapd markers were employed to evaluate the diversity levels and relationship among some 56 collected genotypes of the crop. through sixteen rapd primers a number of, 171 dna bands were produced, 168 of which were polymorphic. the samples which according...

2009
Susel Fernández Juan R. Velasco Miguel A. López-Carmona

Ontologies are a crucial tool for formally specifying the vocabulary and the concepts of agent platforms, so, to share information, agents that use different vocabularies must be able to translate data from one ontological framework to another. The treatment of uncertainty plays a key role in the ontology mapping, as the degree of overlapping between concepts can not be represented logically. T...

Journal: :I. J. Network Security 2015
Huajun Huang Shuang Pang Qiong Deng Jiaohua Qin

The conventional text similarity detection usually use word frequency vectors to represent texts. But it is high-dimensional and sparse. So in this research, a new text similarity detection algorithm using component histogram map (CHM-TSD) is proposed.This method is based on the mathematical expression of Chinese characters, with which Chinese characters can be split into components. Then each ...

2010
Daniel Germann Aline Villavicencio Maity Siqueira

This work investigates lexical organizat ion of verbs looking at the influence of some linguistic factors on the process of lexical acquisition and use. Among the factors that may play a role in acquisition, in this paper we investigate the influence of polysemy. We examine data obtained from psycholinguistic action naming tasks performed by children and adults (speakers of Brazilian Portuguese...

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