نتایج جستجو برای: similarity coefficients
تعداد نتایج: 211352 فیلتر نتایج به سال:
We present an interactive system that allows a user to locate regions of video that are similar to a video query. Thus segments of video can be found by simply providing an example of the video of interest. The user selects a video segment for the query from either a static frame-based interface or a video player. A statistical model of the query is calculated on-the-fly, and is used to find si...
rapd markers were employed to assess the genetic diversity of 34 iranian wild edible asparagus (a. officinalis) genotypes as well as cv. mary washington and a. persicus. in total, 80 rapd primers were employed for pcr reactions, among which, 18 revealed reasonable polymorphism. the 18 primers produced 175 bands, of which, 160 were polymorphic (91.4% polymorphism). cluster analysis of the genoty...
Measuring the (dis)similarity of molecules is important for many cheminformatics applications like compound ranking, clustering, and property prediction. In this work, we focus on real-valued vector representations of molecules (as opposed to the binary spaces of fingerprints). We demonstrate the influence which the choice of (dis)similarity measure can have on results, and provide recommendati...
Current systems for similarity-based virtual screening use similarity measures in which all the fragments in a fingerprint contribute equally to the calculation of structural similarity. This paper discusses the weighting of fragments on the basis of their frequencies of occurrence in molecules. Extensive experiments with sets of active molecules from the MDL Drug Data Report and the World of M...
In this paper, we describe the TATO system which participated in the SemEval-2015 Task 2a: “Semantic Textual Similarity (STS) for English”. Our system is trained on published datasets from the previous competitions. Based on some machine learning techniques, it combines multiple similarity measures of varying complexity ranging from simple lexical and syntactic similarity measures to complex se...
Let f be an integer greater than one. Type-f surgery is a kind of surgery along a knot in a 3-manifold which generalizes the notion of n/f surgery in a homology sphere. Such surgeries preserves the cohomology groups with Zf coefficients. Type-f surgery generates an equivalence relation on 3manifolds which we call similarity modulo f . If f is odd, we show that typef surgery also preserves the c...
GC-MS method combined with FTIR techniques by the analysis of polysaccharide was applied to evaluate the similarity between wild (W) and tissue-cultured (TC) Dendrobium huoshanense (DHS), Dendrobium officinale (DO), and Dendrobium moniliforme (DM) as well as 3 wild Dendrobium spp.: Dendrobium henanense (DHN), Dendrobium loddigesii (DL), and Dendrobium crepidatum (DC). Eight monosaccharides invo...
The virtual screening methods and techniques become one of the important and sophisticated ways of drug discovery, and molecules clustering, they are many methods proposed and applied in virtual screening, most of these screening methods used similarity coefficients to quantify the extent to which objects resemble one another. The result of using these similarity coefficients achieves a good re...
This paper presents a novel effect of Pronoun Resolution on measurement of document similarity. In this paper we have studied the effect of pronoun resolution within the framework of the Vector Space Model and Probabilistic Latent Semantic Analysis. For this purpose we have developed a Benchmark Corpus consisting of documents whose similarity scores have been given by human beings. We measured ...
Human microbiota associated rats are frequently used as a model to study host microbe interactions. This study investigated the long-term stability of the bacterial community in such rats. Following the association of two strains of germ-free rats (12 male animals each) with fecal bacteria from a human donor the development of the microbiota was monitored for 12 months by PCR-denaturing gradien...
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