Text classification using convolutional neural network committee training

The method of classification of textual information based on the apparatus of convolutional neural networks is considered. The word-by-word text conversion into dense vectors is considered. Testing was conducted on the text data of the sample “The 20 Newsgroups”, this sample contains texts distributed in 20 classes. The accuracy, the best of the convolutional neural network used in this work, on the test sample was ~ 74%. The accuracy of voting of neural networks using the Bagging algorithm was ~ 81.5%. Based on the review of similar solutions, a comparison was made with the following text classification algorithms: using the support vector machine (SVM, 82.84%), naive bayes classifier (81%), k nearest neighbor algorithm (75.93%), a bag of words

SINGULAR POINTS FOR THE SUM OF A SERIES OF EXPONENTIAL MONOMIALS

A problem of distribution of singular points for sums of series of exponential monomials on the boundary of its convergence domain is studied. The influence of a multiple sequence Λ = {λk, nk}_(∞;k=1) of the series in the presence of singular points on the arc of the boundary, the ends of which are located at a certain distance R from each other, is investigated. In this regard, the condensation indices of the sequence and the relative multiplicity of its points are considered. It is proved that the finiteness of the condensation index and the zero relative multiplicity are necessary for the existence of singular points of the series sum on the R-arc. It is also proved that for one of the sequence classes Λ, these conditions give a criterion. Special cases of this result are the well-known results for the singular points of the sums of the Taylor and Dirichlet series, obtained by J. Hadamard, E. Fabry, G. P´olya, W.H.J. Fuchs, P. Malliavin, V. Bernstein and A. F. Leont’ev, etc

Comparative Analysis of Approaches and Treatment Results of Patients with Early and Nonearly Rheumatoid Arthritis

The article presents the results of a comparative analysis of different therapy regimens impact on the effectiveness of treatment of patients with early and late rheumatoid arthritis in steady-state. Data on ongoing basis anti-inflammatory therapy of rheumatoid arthritis and the treatment of associated conditions were obtained by continuous copying from case histories of hospital department patients. The observations lasted 12 months. The activity of rheumatoid arthritis before and after the treatment was determined by the DAS 28 (Disease Activity Score) index. The treatment results were evaluated as per the laboratory research and the DAS 28 index, including the counting of painful and swollen joints, erythrocyte sedimentation rate, and health assessment of the patient on a visual analogue scale

Financial Sustainability of the Russian Higher Education Institutions: Quantitative Analysis

Purpose. Quantitative analysis and identification of determinants of Russian universities’ financial sustainability.Methods. Non-parametric methods for data analysis and machine learning.Results. We proposed two groups of working hypothesis. The levels of financial sustainability of Russian state universities are linked to internal environmental factors including the levels of financial management quality, income-generating activities scale, debt financing, fiscal discipline, academic and research-based activities scales. The levels of financial sustainability of Russian state universities are linked to external environmental factors and depend on the funding patterns and regional dimensions.Conclusions. Special conditions for increased state funding are not sufficient to strengthen universities’ financial sustainability. Moreover, we have established the insignificance of the university geographical location influence on financial sustainability. We have come to a conclusion that both financial management efficiency and prior year financial sustainability have key roles to play in current sustainability formation. Universities with a large scale of income-generating activities are more financially stable due to the diversification of sources of financial support for their overall activities

Charge screening and magnetic anisotropy in metallic rare-earth systems

The calculation of magnetic anisotropy constants is performed beyond the point charge model for a continuous charge density distribution of screening conduction electrons. An important role of the non-uniform electron density, in particular, of the Friedel oscillations, in the formation of crystal field is demonstrated. Such effects can modify strongly the effective ion (impurity) charge and even change its sign. This enables one to justify the anion model, which is often used at discussing experimental data on hydrogen-containing systems. Possible applications to the pure rare-earth metals and RCo5 compounds are discussed. The deformation of magnetic structure near the interstitial positive muon owing to the strong local anisotropy, and the corresponding contribution to the dipole field at the muon are considered.Comment: 10 pages, RevTeX, 3 figure

Состав отходящих газов при каталитическом синтезе углеродных наноматериалов при пиролитическом разложении пропан-бутановой смеси

It is known that during the process of carbon nanomaterials synthesis, gaseous products and various unknown hydrocarbons are formed. Thus, the production of carbon nanomaterials could damage the environment. A detailed analysis of all gaseous products during the pyrolysis process is needed in order to clarify the nature of the formed substances and to control the technological characteristics of the catalyst. The chemical composition study of exhaust gases was made on the facility of propane-butane mixture pyrolysis for the carbon nanomaterial synthesis. The analysis of 16 polycyclic aromatic hydrocarbons (PAHs) of the extracts is made using a gas chromatography-mass spectrometry method. A quantitative analysis of gases was made by gas chromatography coupled with a heat conduction detector and a flame ionization detector. It was established that the concentrations of some PAHs exceed 14, 20, 90 and 100 times much as a maximum permissible concentration in the air. It was found that the appropriate devices of carbon nanomaterial production should be used in order to eliminate the PAHs that are formed.Анализ отходящих газов установки пиролиза легких углеводородов в процессе синтеза углеродных наноматериалов является актуальной задачей не только для оценки количества образующихся вредных веществ, но и для обеспечения наибольшей производительности реактора и максимальной степени конверсии исходного сырья. Методом газовой хроматографии проведен качественный и количественный анализ отходящих газов: неконденсируемых газообразных фракций и адсорбируемых ароматических углеводородов. В результате экспериментов было установлено, что основными компонентами отходящих газов являются водород и метан. В соответствии с утвержденной в Республике Беларусь методикой измерены значения 16 полициклических ароматических углеводородов, обнаруженных в отходящих газах. Проведено сравнение полученных значений с нормативными предельно допустимыми концентрациями канцерогенов в воздухе. Установлено, что концентрации пирена, фенантрена, аценафтилена, аценафтена превышают норму в 1,5–6 раз, а содержание таких токсикантов, как бенз(а)антрацен, антрацен, бенз(а)пирен и дибенз(а,h)антрацен значительно превышают норму. Полученная информация позволяет оценить степень опасности для экологии и возможный вклад таких установок в загрязнение окружающей среды, а также прогнозировать защитные меры по снижению вредного воздействия

The implementation of the rules of WIPO Copyright Treaty and WIPO Performances and Phonograms Treaty regarding technological protection measures

The provisions of technological protection measures in WIPO Copyright Treaty (WCT) and WIPO Performances and Phonograms Treaty (WPPT) are analyzed with regard to their implementation in the United States of America, European Union and Russia. Some concerns are expressed regarding the shift of the balance of interests between the authors (rightholders) and general public to the use of the former

The fair-use of copyright objects, protected by technological protection measures, in the U.S. legislation

The provisions of technological protection measures in the United States of America are analysed with regard to the fair-use doctrine of the copyright objects. The classes of works indicated in the list of Secretary of Congress (as non-infringing uses of copyright objects) and exemptions of the general ban on circumvention and trafficking of technological protection measures are listed