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Algorithms of the LDA model [REPORT]
[article]
2013
arXiv
pre-print
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We review three algorithms for Latent Dirichlet Allocation (LDA). Two of them are variational inference algorithms: Variational Bayesian inference and Online Variational Bayesian inference and one is Markov Chain Monte Carlo (MCMC) algorithm -- Collapsed Gibbs sampling. We compare their time complexity and performance. We find that online variational Bayesian inference is the fastest algorithm and still returns reasonably good results.
arXiv:1307.0317v1
fatcat:a6hnprs5gra77k5tys2hnhryji
News Across Languages - Cross-Lingual Document Similarity and Event Tracking
[article]
2015
arXiv
pre-print
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In today's world, we follow news which is distributed globally. Significant events are reported by different sources and in different languages. In this work, we address the problem of tracking of events in a large multilingual stream. Within a recently developed system Event Registry we examine two aspects of this problem: how to compare articles in different languages and how to link collections of articles in different languages which refer to the same event. Taking a multilingual stream and
arXiv:1512.07046v1
fatcat:5vbwcxioxbdqdbr6rbsf5dyeri
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... clusters of articles from each language, we compare different cross-lingual document similarity measures based on Wikipedia. This allows us to compute the similarity of any two articles regardless of language. Building on previous work, we show there are methods which scale well and can compute a meaningful similarity between articles from languages with little or no direct overlap in the training data. Using this capability, we then propose an approach to link clusters of articles across languages which represent the same event. We provide an extensive evaluation of the system as a whole, as well as an evaluation of the quality and robustness of the similarity measure and the linking algorithm.
On the singular two-parameter eigenvalue problem
2009
The Electronic Journal of Linear Algebra
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Apart from a few theoretical results and numerical methods in [4] and [13] , which only cover very specific examples, the singular two-parameter eigenvalue problem is ELA 422 Andrej Muhič and Bor Plestenjak ...
If Electronic Journal of Linear Algebra ISSN 1081-3810
A publication of the International Linear Algebra Society
Volume 18, pp. 420-437, July 2009
ELA
428
Andrej Muhič and Bor Plestenjak
Lemma ...
Andrej Muhič and Bor Plestenjak for the numerical computation of roots of such systems. ...
doi:10.13001/1081-3810.1322
fatcat:gbaenhubo5ftrkno64xp7jolti
Wall Roughness Influence on the Efficiency Characteristics of Centrifugal Pump
2017
Strojniski vestnik
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-Muhič, S. -Mitruševski, D. ...
Andrej Lipej 1 -Simon Muhič 1,* -Duško Mitruševski 2 The accuracy of numerical prediction of energetic characteristics is very important for the development process of centrifugal pumps. • One of the important ...
doi:10.5545/sv-jme.2017.4526
fatcat:iirbot6glvajhirfpynb2ygaha
On the quadratic two-parameter eigenvalue problem and its linearization
2010
Linear Algebra and its Applications
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AMS classification: 65F15 15A18 15A69 15A22 Keywords: Two-parameter quadratic eigenvalue problem Singular two-parameter eigenvalue problem Model updating Linearization Kronecker canonical form We introduce the quadratic two-parameter eigenvalue problem and linearize it as a singular two-parameter eigenvalue problem. This, together with an example from model updating, shows the need for numerical methods for singular two-parameter eigenvalue problems and for a better understanding of such
doi:10.1016/j.laa.2009.12.022
fatcat:y2kai3sylrbcvh2e6o6aqyxfva
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... s. There are various numerical methods for two-parameter eigenvalue problems, but only few for nonsingular ones. We present a method that can be applied to singular two-parameter eigenvalue problems including the linearization of the quadratic two-parameter eigenvalue problem. It is based on the staircase algorithm for the extraction of the common regular part of two singular matrix pencils.
On linearizations of the quadratic two-parameter eigenvalue problem
2012
Linear Algebra and its Applications
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We present several transformations that can be used to solve the quadratic two-parameter eigenvalue problem (QMEP), by formulating an associated linear multiparameter eigenvalue problem. Two of these transformations are generalizations of the well-known linearization of the quadratic eigenvalue problem and linearize the QMEP as a singular two-parameter eigenvalue problem. The third replaces all nonlinear terms by new variables and adds new equations for their relations. The QMEP is thus
doi:10.1016/j.laa.2011.07.026
fatcat:kvhkrfaoe5hippdv2orc3sjdkq
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... med into a nonsingular five-parameter eigenvalue problem. The advantage of these transformations is that they enable one to solve the QMEP using existing numerical methods for multiparameter eigenvalue problems. We also consider several special cases of the QMEP, where some matrix coefficients are zero.
Jacobi–Davidson methods for polynomial two-parameter eigenvalue problems
2015
Journal of Computational and Applied Mathematics
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Muhič), bor.plestenjak@fmf.uni-lj.si (Bor Plestenjak) URL: http://www.win.tue.nl/~hochsten/ (Michiel E. ...
polynomial two-parameter eigenvalue problem (PMEP) P 1 (λ, µ) x 1 = k i=0 k−i j=0 λ i µ j A ij x 1 = 0, (1) P 2 (λ, µ) x 2 = k i=0 k−i j=0 λ i µ j B ij x 2 = 0, Email addresses: andrej.muhic@fmf.uni-lj.si (Andrej ...
doi:10.1016/j.cam.2015.04.019
fatcat:5kpwi75a2naafnpvhvmiwt5g7y
A method for computing all values λ such that A+λB has a multiple eigenvalue
2014
Linear Algebra and its Applications
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Given a pair of n × n matrices A and B, we consider the problem of finding values λ such that the matrix A + λB has a multiple eigenvalue. Our approach solves the problem using only the standard matrix computation tools. By formulating the problem as a singular two-parameter eigenvalue problem, we construct matrices ∆ 1 and ∆ 0 of size 3n 2 × 3n 2 with the property that the regular eigenvalues of the singular pencil ∆ 1 − λ∆ 0 are the values λ, such that A + λB has a multiple eigenvalue. We
doi:10.1016/j.laa.2013.10.015
fatcat:is4mbruv35httjwwb5sklf6m6e
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... that these values can be computed numerically from ∆ 1 and ∆ 0 by the staircase algorithm.
News Across Languages - Cross-Lingual Document Similarity and Event Tracking (Extended Abstract)
2017
Proceedings of the Twenty-Sixth International Joint Conference on Artificial Intelligence
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., 2011a; 2011b; Muhič et al., 2012] where we explored representations of documents which were valid over multiple languages. ...
doi:10.24963/ijcai.2017/720
dblp:conf/ijcai/RupnikMLFG17
fatcat:dp45cm42nras7d355olm7weoja
News Across Languages-Cross-Lingual Document Similarity and Event Tracking
2016
Journal of Artificial Intelligence Research
unpublished
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The first ingredient of our approach to link clusters across languages represents a continuation of previous work (Rupnik, Muhic, & Skraba, 2011a , 2011b; Muhič, Rupnik, & Škraba, 2012) where we explored ...
fatcat:46asv5feirf5tl3eh57taf2lcq
Jihad.cz: Interpreting Jihad, Sexual Jihad and Demographic Jihad in the Czech Anti-Islamic Milieu
2021
Religions
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Prime Minister Andrej Babiš also used this theme against the opposition at the beginning of 2021 when he was asked what would happen if his ruling ANO party did not win the next elections to the Chamber ...
will no longer vote for the SPD because he does not want the party to be associated "with that terrorist Balda" and instead is voting and will continue to vote for the party of current Prime Minister Andrej ...
doi:10.3390/rel12121086
fatcat:jt7cq47b35gejpf3zyhlsxy2q4
Cross-Lingual Cross-Media Content Linking: Annotations and Joint Representations (Dagstuhl Seminar 15201)
2015
Dagstuhl Reports
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, Andrej; Leban, Gregor; Skraba, Primoz; Fortuna, Blaz; Grobelnik, Marko; URL http://xling.ijs.si/ License
Estevam R. ...
Smeaton, Alan; Sebe, Nicu; Chong-Wah, Ngo; Thalhammer Andreas; Rettinger Achim
Blaz Fortuna (Ghent University, BE) Creative Commons BY 3.0 Unported license © Blaz Fortuna Joint work of Rupnik, Jan; Muhic ...
doi:10.4230/dagrep.5.5.43
dblp:journals/dagstuhl-reports/HauptmannHLSR15
fatcat:sjqptft2m5cufcpzslggt7la5i
Laser grooving of surface cracks on hot work tool steel
2011
Metalurgija
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Andrej Horvat, Dr. Ale{ Gorki~and Prof. Dr. Ladislav Kosec for the help at this research. Note: The responsible translator for English language is Ur{ka Letonja, Moar. Prevajanje, Slovenia ...
doaj:3b16b58251764f6ba91a87931b8aa2ef
fatcat:3adn32upjfhwrkyw7ewmhbr3t4
The Sixth Visual Object Tracking VOT2018 Challenge Results
[chapter]
2019
Lecture Notes in Computer Science
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The Visual Object Tracking challenge VOT2018 is the sixth annual tracker benchmarking activity organized by the VOT initiative. Results of over eighty trackers are presented; many are state-of-the-art trackers published at major computer vision conferences or in journals in the recent years. The evaluation included the standard VOT and other popular methodologies for short-term tracking analysis and a "real-time" experiment simulating a situation where a tracker processes images as if provided
doi:10.1007/978-3-030-11009-3_1
fatcat:wbfi2kp3rze33cl2o56eauhooq
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... y a continuously running sensor. A long-term tracking subchallenge has been introduced to the set of standard VOT sub-challenges. The new subchallenge focuses on long-term tracking properties, namely coping with target disappearance and reappearance. A new dataset has been compiled and a performance evaluation methodology that focuses on long-term tracking capabilities has been adopted. The VOT toolkit has been updated to support both standard short-term and the new longterm tracking subchallenges. Performance of the tested trackers typically by far exceeds standard baselines. The source code for most of the trackers is publicly available from the VOT page. The dataset, the evaluation kit and the results are publicly available at the challenge website 60 . 60 http://votchallenge.net 61
Postopek modeliranja v okviru množičnega vrednotenja nepremičnin (= Modeling procedure within the mass valuation of real estate in Slovenia)
2022
Geodetski vestnik
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Glede na Ulbl in Muhič (2021) je za potrebe srednje vrednosti cen in ostanka takšnega modela najbolj smiselna uporaba geometrijske sredine, vendar sistem množičnega vrednotenja omogoča izbiro različnih ...
Melita Ulbl, Andrej Glavica
POSTOPEK MODELIRANJA V OKVIRU MNOŽIČNEGA VREDNOTENJA NEPREMIČNIN MODELLING PROCEDURE IN THE MASS VALUATION OF REAL ESTATE IN SLOVENIA The mass valuation of real estate in ...
doi:10.15292/geodetski-vestnik.2022.02.258-279
doaj:f7547e80a144496a91a6bf525361c19c
fatcat:wfbkkmr6bbalvhyeqc6av2clca
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