4,093 research outputs found
Vector bundles of finite rank on complete intersections of finite codimension in ind-Grassmannians
In this article we establish an analogue of the Barth-Van de Ven-Tyurin-Sato
theorem. We prove that a finite rank vector bundle on a complete intersection
of finite codimension in a linear ind-Grassmannian is isomorphic to a direct
sum of line bundles
Automatic summary evaluation. Roug e modifications
Nowadays there is no common approach to summary. Manual evaluation is expensive and subjective and it is not applicable in real time or on a large corpus. Widely used approaches involve little human efforts and assume comparison with a set of reference summaries. We tried to overcome drawbacks of existing metrics such as ignoring redundant information, synonyms and sentence ordering. Our method combines edit distance, ROUGE-SU and trigrams similarity measure enriched by weights for different parts of speech and synonyms. Since nouns provide the most valuable information, each sentence is mapped into a set of nouns. If the normalized intersection of any pair is greater than a predefined threshold the sentences are penalized. Doing extracts there is no need to analyze sentence structure but sentence ordering is crucial. Sometimes it is impossible to compare sentence order with a gold standard. Therefore similarity between adjacent sentences may be used as a measure of text coherence. Chronological constraint violation should be penalized. Relevance score and readability assessment may be combined in the F-measure. In order to choose the best parameter values machine learning can be applied
Multistage Voting Model with Alternative Elimination
The voting process is formalized as a multistage voting model with successive
alternative elimination. A finite number of agents vote for one of the
alternatives each round subject to their preferences. If the number of votes
given to the alternative is less than a threshold, it gets eliminated from the
game. A special subclass of repeated games that always stop after a finite
number of stages is considered. Threshold updating rule is proposed. A computer
simulation is used to illustrate two properties of these voting games
Transforming Message Detection
The majority of existing spam filtering techniques suffers from several serious
disadvantages. Some of them provide many false positives. The others are suitable only for
email filtering and may not be used in IM and social networks. Therefore content methods
seem to be more efficient. One of them is based on signature retrieval. However it is not change resistant. There are enhancements (e.g. checksums) but they are extremely time and resource consuming. That is why the main objective of this research is to develop a transforming message detection method. To this end we have compared spam in various languages, namely English, French, Russian and Italian. For each language the number of examined messages including spam and notspam was about 1000. 135 quantitative features have been retrieved. Almost all these features do not depend on the language. They underlie the first step of the algorithm based on support vector machine. The next stage is to test the obtained results
applying N-gram approach. Special attention is paid to word distortion and text alteration. The obtaining results indicate the efficiency of the suggested approach
Enemies or allies? The Crimean war and britishrussian technical cooperation in the Urals
The article was submitted on 10.06.2015.This article studies one aspect of British-Russian cooperation between the 1840s and 1850s, involving the exchange of technical staff. The research is based on clerical records and act sources, deposited in archival materials of central and local governmental bodies of the Russian mining industry. The specific features of cooperation are illustrated by examples of service of Englishmen at Ural factories. The author analyses circumstances of recruitment and conditions of work of high-qualified engineers as well as of ordinary masters. During the period in question, Englishmen were the most requested specialists because they were thought to possess advanced technological experience and knowledge. Such a perception extended to all, not just to the representatives of professions requiring the highest education and qualification. In the second half of the 1840s - early 1850s, a team of shipbuilders led by the engineer, James Carr, worked in the Ural plants. During this period the Russian government actively invited mechanics, hammer workers, molders and masters of puddling. Englishmen often were appointed to higher positions to deal with the technical part of Ural state factories. The exchange of experience was carried out during the common work of British and Russian engineers and masters as well as in the process of training. The paper displays the ambiguity of such interaction and difficulties, which arose due to faults of either one or the other side. The sources, documenting recruitment and dismissal of foreigners, describe cases when the hiring of invited specialists did not bring the expected results. The author reveals the reasons and consequences of failed attempts of using British technological experience at Russian plants. Among them include technical unpreparedness of the Ural industry, the inconsistency between the qualification of foreigners and the tasks for which they were invited and finally insufficient awareness of the Russian side concerning the recruited technicians’ professional skills. Biographies of English specialists (engineers, mechanics, etc.) are considered in the context of international conjuncture, which at the time was characterized by an increase in tension in English-Russian relations and the upcoming war. The paper demonstrates that the attitude of some British men towards their service in the Urals changed for the worse because the Crimean war had begun. Others continued their contract work in the Urals in spite of the military confrontation between Russia and England. The activity of British technical specialists in the Urals was a reflection of peculiarities in English-Russian relations, in which cooperation in economic and technological spheres could coexist with a drastic deterioration of political relations.Статья посвящена исследованию одной из сторон британско-российского сотрудничества в 1840-50-е гг., заключавшейся в обмене техническими кадрами. Исследование проведено на основе делопроизводственных и актовых источников, отложившихся в фондах центральных и местных органов управления российской горной промышленностью. Особое место среди них занимают контракты с британскими специалистами, а также служебная переписка. Характерные черты технического сотрудничества проиллюстрированы яркими примерами службы англичан на заводах Урала. Проанализированы обстоятельства вербовки и условия работы по контрактам как высококвалифицированных инженеров, так и рядовых мастеров. В изучаемый период англичане оказались наиболее востребованными специалистами, поскольку считались носителями передового технологического опыта и знаний. Такое восприятие распространялось на всех, а не только на представителей профессий, требующих наибольшей образованности и квалификации. Выявлен персональный состав британских специалистов. Во второй половине 1840-х - начале 1850-х гг. на уральских заводах работала команда корабельных мастеров во главе с инженером Джеймсом Карром, которая обеспечила развитие судостроения. Активно приглашались в этот период механики, молотовые мастера, специалисты по пудлингованию, формовщики. На высшие должности по технической части уральских казенных заводов нередко назначались выходцы из Англии. Обмен опытом осуществлялся во время совместной работы британских и русских инженеров и мастеров, а также в ходе обучения. В статье показана неоднозначность этого взаимодействия, сложности, возникавшие по вине и той и другой стороны. Источники, документирующие процессы найма и увольнения специалистов не давало ожидаемых результатов. Выявлены причины и последствия неудавшихся попыток использования британского технологического опыта на российских заводах, среди которых техническая неподготовленность уральской промышленности, несоответствие квалификации приглашенных иностранцев тем задачам, которые перед ними ставились, недостаточная осведомленность российской стороны о профессиональном уровне контрактуемых. Судьбы британских специалистов (инженеров, механиков и пр.) рассматриваются в контексте международной конъюнктуры, характеризовавшейся в исследуемый период нарастанием напряженности в англо-русских отношениях с последующими военными действиями. Показано, что отношение одних британцев к службе на Урале менялось в негативную сторону в связи начавшейся Крымской войной, другие же, несмотря на военную конфронтацию России и Англии, продолжали работать на уральских заводах, не прерывая контрактов. Деятельность британских технических специалистов на Урале является ярким отражением специфики англо-русских отношений, в которых сотрудничество в сфере экономики и технологий могло проходить наряду с жестким обострением внешнеполитических отношений.Статья подготовлена в рамках реализации гранта Правительства РФ по привлечению ведущих ученых в российские образовательные учреждения высшего профессионального образования и научные учреждения государственных академий наук и государственные научные центры Российской Федерации (Лаборатория эдиционной археографии, Уральский федеральный университет). Договор № 14.А12.31.0004 от 26.06.2013 г
IRIT at INEX 2014 : Tweet Contextualization Track
National audienceThe paper presents IRIT's approach used at INEX Tweet Contextualization Track 2014. Systems had to provide a context to a tweet from the perspective of the entity. This year we further modified our approach presented at INEX 2011, 2012 and 2013 underlain by the product of different measures based on smoothing from local context, named entity recognition, part-ofspeech weighting and sentence quality analysis. We introduced two ways to link an entity and a tweet, namely (1) concatenation of the entity and the tweet and (2) usage of the results obtained for the entity as a restriction to filter results retrieved for the tweet. Besides, we examined the influence of topic-comment relationship on contextualization
A Method for Short Message Contextualization: Experiments at CLEF/INEX
International audienceThis paper presents the approach we developed for automatic multi-document summarization applied to short message contextualization, in particular to tweet contextualization. The proposed method is based on named entity recognition, part-of-speech weighting and sentence quality measuring. In contrast to previous research, we introduced an algorithm from smoothing from the local context. Our approach exploits topic-comment structure of a text. Moreover, we developed a graph-based algorithm for sentence reordering. The method has been evaluated at INEX/CLEF tweet contextualization track. We provide the evaluation results over the 4 years of the track. The method was also adapted to snippet retrieval and query expansion. The evaluation results indicate good performance of the approach
State Policy in the Recruitment of Foreign Specialists IN Ural Factories (the 1st Half of the 19th Century)
The article was submitted on 16.08.2014.The article considers the policy of foreign technical specialists to Russia the referring to documents reflecting the activities of state metallurgical factories in the Urals in the 1st half of the 19th century. An important element of the administrative system in the industry was the management of foreign specialists’ activities. Not only did it include the regulation of their work as participants of the production process, but also a number of additional forms and methods of influence. The author draws upon studies of employment and higher payment conditions, means of recruitment, forms of social welfare and measures for maintenance of the high social status of foreigners and concludes that the provision of profitable conditions of service, welfare and comfort in everyday life was the key method of attracting foreigners. Apart from invitations and recruitment, mechanisms for keeping specialists at the factories proved significant in foreigner-related policy.В статье рассматривается политика по привлечению иностранных технических специалистов в Россию на основе документов, отложившихся в результате деятельности казенных металлургических заводов Урала первой половины XIX в. В системе специального управления промышленным производством особое место занимало управление иностранными специалистами. Оно включало в себя не только регулирование деятельности иностранцев как участников производственного процесса, но и ряд дополнительных форм и инструментов воздействия. На основе исследования условий найма, способов вербовки, критериев выплат повышенного жалованья, разнообразных видов социального обеспечения, мер по поддержанию подчеркнуто высокого социального статуса иностранцев автором сделан вывод о том, что создание выгодных условий службы и обеспечение достатка и комфорта в повседневной жизни являлись ключевыми методами привлечения иностранных специалистов. Кроме того, важными стратегическими элементами политики в отношении иностранцев выступали не только меры по приглашению и приему их на службу, но и механизмы дальнейшего удержания на заводах.Исследование выполнено при поддержке гранта РНФ «Акторы российской имперской модернизации (XVIII — начало XX в.): региональное измерение» (№ 14-18-01625)
Gluttonic nomination in russian and British linguistic cultures
In the article universal and ethnocultural ways of the gluttonic nomination in Russian and British linguistic culture are described. Linguistic-cultural correlations of foodstuff names and national character are chosen as an object of research. national character is considered as set of the steadiest features of emotional sensory perception of world around and forms of reactions to it for this national community. It is confirmed that national character, being expressed in emotions, feelings, moods, is manifested in existing language formsyesBelgorod State Universit
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