In this paper we introduce the vector space representation of the N-gram language model where vectors of K dimensions are given to both words and contexts, i.e., an N-1 word sequence, so that the scalar product of a ‘word vector’ and a ‘context vector’ gives the corresponding N-gram probability. The vector space representation is obtained from singular value decomposition (SVD) of the co-occurr...

human interferon β (inf-β) is a member of cytokines family which different studies have shown its immunomodulatory and antiviral activities. in this study an expression vector was designed and constructed for expression of human inf-β-1b either in shake flasks and bench top bioreactor. the designed vector was constructed based upon pet-25b(+) with t7 promoter. recombinant human beta interferon ...

In recent years, production of text documents has seen an exponential growth, which is the reason why their proper classification seems necessary for better access. One of the main problems of classifying text documents is working in high-dimensional feature space. Feature Selection (FS) is one of the ways to reduce the number of text attributes. So, working with a great bulk of the feature spa...

in this paper, we improve some recent coupled fixed point resultsfor single-valued operators in the framework of ordered $b$-metricspaces established by bota et al. [m-f. bota, a. petrusel, g.petrusel and b. samet, coupled fixed point theorems forsingle-valued operators in b-metric spaces, fixed point theoryappl. (2015) 2015:231]. also, we prove that perov-type fixed pointtheorem in ordered gen...

In recent years, production of text documents has seen an exponential growth, which is the reason why their proper classification seems necessary for better access. One of the main problems of classifying text documents is working in high-dimensional feature space. Feature Selection (FS) is one of the ways to reduce the number of text attributes. So, working with a great bulk of the feature spa...

This paper presents a pilot study on students' images of the concept of vector space. Three students have been asked to model a real world situation with the mathematical tool of a vector space in interviews and have revealed two very different priorities of looking at a vector space. The part of the interviews this paper deals with is concerned with the students' general notions of the charact...

The momentum-space bosonization method is extended to the case of a Nambu–Jona-Lasinio type model with vector and axial-vector mesons. The method presented gives the possibility of deriving any meson vertex function to all orders in momenta and to the leading order in 1/Nc. Two-point functions, which describe one-particle transitions to the hadronic vacuum, and meson selfenergies are considered...