• A
• A
• A
• ABC
• ABC
• ABC
• А
• А
• А
• А
• А
Regular version of the site
Of all publications in the section: 4 012
Sort:
by name
by year
Working paper
Ялбулганов А. А. Law. LAW. Высшая школа экономики, 2014. № 35.
The creation of the EurAsEC Customs Union and Russia’s ascension into the WTO has led to a radical change in Russia’s anti-dumping legislation. Anti-dumping regulation ceased to fall under national jurisdiction and was transferred to the Eurasian Economic Commission, a supranational regulator. This article analyzes the new anti-dumping legislation of the EurAsEC Customs Union, anti-dumping procedures, their principles, participants, an main stages, as well as the legal treatment of inform ation used in the anti-dumping regulation.
Working paper
Zlotnik A., Romanova A. V. arxiv.org. math. Cornell University, 2013. No. arxiv: 1307.5398.
We consider an initial-boundary value problem for a 2D time-dependent Schrödinger equation on a semi-infi nite strip. For the Numerov-Crank-Nicolson finite-di fference scheme with discrete transparent boundary conditions, the Strang-type splitting with respect to the potential is applied. For the resulting method, the uniqueness of a solution and the uniform in time L_2-stability (in particular, L_2-conservativeness) are proved. Due to the splitting, an eff ective direct algorithm using FFT in the direction perpendicular to the strip is developed to implement the splitting method for general potential. Numerical results on the tunnel eff ect for smooth and rectangular barriers together with the practical error analysis on refining meshes are included as well.
Working paper
Shitov Y. arxiv.org. math. Cornell University, 2013
We provide a nontrivial upper bound for the nonnegative rank of rank-three matrices, which allows us to prove that  [6(n+1)/7]  linear inequalities suffice to describe a convex n-gon up to a linear projection.
Working paper
Galkin S. arxiv.org. math. Cornell University, 2016. No. 1604.04652.
For Fano manifolds we define Ap\'ery constants and Ap\'ery class as particular limits of ratios of coefficients of solutions of the quantum differential equation. We do numerical computations in case of homogeneous varieties. These numbers are identified to be polynomials in the values of Riemann zeta-function with natural arguments.
Working paper
Schang F. Logic in Religious Discourse. ISBN 3110319578. Ontos Verlag, De Gruyter Series, 2010
Working paper
Kalashnikov E. G. arXiv. arXiv. arXiv, 2020
We introduce a superpotential for partial flag varieties of type A. This is a map W:Y∘→C, where Y∘ is the complement of an anticanonical divisor on a product of Grassmannians. The map W is expressed in terms of Plücker coordinates of the Grassmannian factors. This construction generalizes the Marsh--Rietsch Plücker coordinate mirror for Grassmannians. We show that in a distinguished cluster chart for Y, our superpotential agrees with earlier mirrors constructed by Eguchi--Hori--Xiong and Batyrev--Ciocan-Fontanine--Kim--van Straten. Our main tool is quantum Schubert calculus on the flag variety.
Working paper
Proskuryakova L. N., Meissner D. SCIENCE, TECHNOLOGY, INNOVATION. SCIENCE, TECHNOLOGY, INNOVATION. НИУ ВШЭ, 2014. No. 26.
The paper offers a taxonomy of the technology platforms (TPs) to help assess a platform’s risk level. TPs are seen as a valuable policy instrument that assists a multi-stakeholder formulation and implementation of long-term R&D programs in specific technology areas at economy or industry level. The TPs analysis and the taxonomy are based on the industrial economic perspective and contribute to defining and implementing technology platforms above the company level. In practical terms the results of the study may be used by policy-makers in designing the R&D support measures. Moreover, the paper clarifies the role of TPs in the science, technology and innovation policy mix. The authors trace the evolution of the ‘technology platform’ concept from an instrument used by companies for R&D and innovation management towards a policy instrument used for technology and economic development at national and international levels. The authors propose a theoretical approach to TPs as a science, technology and innovation policy concept. Furthermore the paper offers a case-study of Russia’s newly established Technology Platforms
Working paper
Proskuryakova L., Meissner D., Rudnik P. Science, Technology and Innovation. WP BRP. Высшая школа экономики, 2014. No. 26/STI/2014 .
The paper offers a taxonomy of the technology platforms (TPs) to help assess a platform’s risk level. TPs are seen as a valuable policy instrument that assists a multi-stakeholder formulation and implementation of long-term R&D programs in specific technology areas at economy or industry level. The TPs analysis and the taxonomy are based on the industrial economic perspective and contribute to defining and implementing technology platforms above the company level. In practical terms the results of the study may be used by policy-makers in designing the R&D support measures. Moreover, the paper clarifies the role of TPs in the science, technology and innovation policy mix. The authors trace the evolution of the ‘technology platform’ concept from an instrument used by companies for R&D and innovation management towards a policy instrument used for technology and economic development at national and international levels. The authors propose a theoretical approach to TPs as a science, technology and innovation policy concept. Furthermore the paper offers a case-study of Russia’s newly established Technology Platforms.
Working paper
Aziz H., Moulin H., Sandomirskiy F. Computer Science and Game Theory (cs.GT), arXiv:1909.00740. arXiv. Cornell university, 2019
We consider fair allocation of indivisible items under additive utilities. When the utilities can be negative, the existence and complexity of an allocation that satisfies Pareto optimality and proportionality up to one item (PROP1) is an open problem. We show that there exists a strongly polynomial-time algorithm that always computes an allocation satisfying Pareto optimality and proportionality up to one item even if the utilities are mixed and the agents have asymmetric weights. We point out that the result does not hold if either of Pareto optimality or PROP1 is replaced with slightly stronger concepts.
Working paper
Gafarov E., Lazarev A. A., Werner F. Otto-von-Guericke Universitaet, 2010. No. 12.
In this paper, we consider the problem of maximizing total tardiness on a single machine, where the first job starts at time zero and idle times between the processing of jobs are not allowed. We present a modification of an exact pseudo-polynomial algorithm based on a graphical approach, which has a polynomial running time.
Working paper
Karpov A. V. KIER Discussion paper series. 896. Kyoto institute of economic research, Kyoto University, 2014. No. 896.
This paper provides an example of sole apparentement (coalition) that leads to unlimited seat losses. The necessary and sufficient condition of the lack of successful apparentements is discovered. A precise description of an apparentement-proof set is recognized. The probability of the lack of successful apparentement is evaluated. A game-theoretical approach for apparentement formation is applied.
Working paper
Volkova I. Management. MAN. Высшая школа экономики, 2013
The idea that different firms can be classified into relatively homogeneous groups has been popular for many years, and many typologies have been developed and tested using a variety of classification tools. It has become apparent, however, that most clustering tools are somewhat limited, because they create groups of companies based on similar characteristics, without taking into account company performance. The objective of the current study was to address the limitations of previous research by creating a typology of companies based on financial efficiency, using data envelopment analysis as a clustering tool.
Working paper
Maxim Borisyak, Zykov R., Noskov A. arxiv :: cs :: Cornell University. arxiv :: cs :: Cornell University. Cornell University, 2015
Classical approaches in recommender systems such as collaborative filtering are concentrated mainly on static user preference extraction. This approach works well as an example for music recommendations when a user behavior tends to be stable over long period of time, however the most common situation in e-commerce is different which requires reactive algorithms based on a short-term user activity analysis. This paper introduces a small mathematical framework for short-term user interest detection formulated in terms of item properties and its application for recommender systems enhancing. The framework is based on the fundamental concept of information theory --- Kullback-Leibler divergence.
Working paper
Sechin P., Semenov N. math. arxive. Cornell University, 2018
In the present article we discuss an approach to cohomological invariants of algebraic groups over fields of characteristic zero based on the Morava K-theories, which are generalized oriented cohomology theories in the sense of Levine--Morel.  We show that the second Morava K-theory detects the triviality of the Rost invariant and, more generally, relate the triviality of cohomological invariants and the splitting of Morava motives.  We describe the Morava K-theory of generalized Rost motives, compute the Morava K-theory of some affine varieties, and characterize the powers of the fundamental ideal of the Witt ring with the help of the Morava K-theory. Besides, we obtain new estimates on torsion in Chow groups of codimensions up to 2^n of quadrics from the (n+2)-nd power of the fundamental ideal of the Witt ring. We compute torsion in Chow groups of K(n)-split varieties with respect to a prime p in all codimensions up to p^{n−1}/(p−1) and provide a combinatorial tool to estimate torsion up to codimension p^n. An important role in the proof is played by the gamma filtration on Morava K-theories, which gives a conceptual explanation of the nature of the torsion.  Furthermore, we show that under some conditions the K(n)-motive of a smooth projective variety splits if and only if its K(m)-motive splits for all m≤n.
Working paper
Starchenko A., Kazakevich L., Lyashevskaya O. Linguistics. WP BRP. НИУ ВШЭ, 2018. No. 76.
The poetic texts pose a challenge to full morphological tagging and lemmatization since the authors seek to extend the vocabulary, employ morphologically and semantically deficient forms, go beyond standard syntactic templates, use non-projective constructions and non-standard word order, among other techniques of the creative language game. In this paper we evaluate a number of probabilistic taggers based on decision trees, CRF and neural network algorithms as well as one state-of-the-art dictionary-based tagger. The taggers were trained on prosaic texts and tested on three poetic samples of different complexity. Firstly, we discuss the method to compile the gold standard datasets for the Russian poetry. Secondly, we evaluate the taggers’ performance in the identification of the part of speech tags and lemmas. Finally, we analyze different types of errors in the taggers’ output. We analyse the confusion matrix of the parts of speech and mismatches in lemma annotation.
Working paper
Bronnikov S., Dolgui A., Lazarev A. A. et al. Preprints. 2015-12. Faculty of Mathematics, Otto-von-Guericke University, 2015. No. 12.
We consider the problem of planning the ISS cosmonaut training with different objectives. A pre-defined set of minimum qualification levels should be distributed between the crew members with minimum training time differences, training expenses or a maximum of the training level with a limitation of the budget.   First, a description of the cosmonaut training process is given. Then four models are considered for the volume planning problem. The objective of the first model is to minimize the differences between the total time of the preparation of all crew members, the objective of the second one is to minimize the training expenses with a limitation of the training level, and the objective of the third one is to maximize the training level with a limited budget. The fourth model considers the problem as an n-partition problem. Then two models are considered for the calendar planning problem.    For the volume planning problem, two algorithms are presented. The first one is a heuristic with a complexity of O(n) operations. The second one consists of a heuristic and exact parts, and it is based on the n-partition problem approach.
Working paper
Abdrakhmanova G., Kovaleva G. G., Plaksin S. Science, Technology and Innovation. WP BRP. Высшая школа экономики, 2016. No. WP BRP 61/STI/2016 .
Our study object is the Russian Internet economy, i.e. economic activities of companies relying on the Russian-language segment of the World Wide Web. The purpose of this study is to classify businesses engaged in the national Internet economy and measure its size (as a share of GDP) using official statistics. The analysis of international approaches used for such studies allowed us to classify these according to the following criteria: the direct impact of the Internet on the economy, indirect economic impact of the Internet, and its indirect impact on the social sphere. To assess the size of the Russian Internet economy we used the approaches applied by international organizations (OECD, BCG, McKinsey) for the analysis of the direct impact of the Internet on the economy [BCG (2014), McKinsey (2011), OECD (2014), etc.]. The authors singled out three sectors within the Internet economy: the sector of ICT infrastructure and its maintenance; the sector of companies doing business purely on the Internet, and the sector of companies combining an online and offline business. To assess the share of the Internet economy in GDP using the production approach we first defined the above sectors in accordance with All-Russian Classification of Economic Activities (OKVED) Rev. 1.1 and subsequently calculated gross value added (GVA) for each sector. For this purpose, the GVA data calculated by Federal Service of State Statistics (Rosstat) was disaggregated while the share of the GVA contributed by the third sector companies (i.e. combining an online and offline business) was assessed using the results of special surveys and Rosstat data. To measure the size of the Internet economy using the expenditure approach we focused on consumer spending on goods bought through the Internet, ICT equipment and Internet access as well as institutions’ expenditure for ICT equipment, fixed capital investment of enterprises engaged in Internet activities, public sector ICT spending, net exports of ICT goods and services. According to our estimates obtained by two methods such as the production approach and expenditure approach, the share of the Internet economy in GDP in 2014 amounted to 2.7 and 2.6%, respectively. Future studies would require a more detailed definition and description of the Internet-related economic activities on the basis of OKVED2 with subsequent calculation of GVA for appropriate companies as well as development of statistical tools for collecting data on household spending
Working paper
Kadyrova A. Science, Technology and Innovation. WP BRP. Высшая школа экономики, 2015. No. WP BRP 38/STI/2015.
The paper presents an analysis of advanced technology classifications development. Despite the variety of technology types – advanced, emerging, disruptive, enabling, best available – the focus of the study is made on the first type considering their precedent character, crucial role for manufacturing and overall economic development. Various approaches to define the term ‘advanced technology’ as well as gradual evolution of the definitions and classifications are demonstrated in the paper.  It is argued that the initial understanding of advanced technologies was formed in early 1990s and characterized increase in efficiency, hardware and software usage, robotics, etc. Further rapid progress of science and technology in 1990-2010s led to the expansion of the concept by the means of technologies based on fast computing, primarily used for design, control and track of manufacturing activities as well as micro- and nanotechnologies. Moreover, indicators used for measurement of their development and use are compared.
Gaudin algebra is the commutative subalgebra in $U(\g)^{\otimes n}$ generated by higher integrals of the quantum Gaudin magnet chain attached to a semisimple Lie algebra $\g$. This algebra depends on a collection of pairwise distinct complex numbers $z_1,\ldots,z_n$. We prove that this subalgebra has a cyclic vector in the space of singular vectors of the tensor product of any finite-dimensional irreducible $\g$-modules, for all values of the parameters. The corollary of this result is the Bethe Ansatz conjecture in the Feigin-Frenkel form which states that the joint eigenvalues of the higher Gaudin Hamiltonians on the tensor product of irreducible finite-dimensional $\g$-modules are in 1-1 correspondence with monodromy-free opers on the projective line with regular singularities at the points $z_1,\ldots,z_n,\infty$ and prescribed residues at singular points.