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Promoting Divergent Terms in the Estimation of Relevance Models [chapter]

Javier Parapar, Álvaro Barreiro
2011 Lecture Notes in Computer Science  
In this paper we present an alternative estimation for the RM promoting terms that being present in the relevance set are also distant from the language model of the collection.  ...  Particularly the use of Relevance Models (RM) in the context of the Language Modelling framework has been established as a high-performance approach to beat.  ...  In our second contribution we present a new RM estimation that promotes divergent terms for expansion, i.e., terms that are far from the collection language model.  ... 
doi:10.1007/978-3-642-23318-0_9 fatcat:64bm33cr6fcx5gtmrqlwk7riba

Sexual selection accelerates signal evolution during speciation in birds

N. Seddon, C. A. Botero, J. A. Tobias, P. O. Dunn, H. E. A. MacGregor, D. R. Rubenstein, J. A. C. Uy, J. T. Weir, L. A. Whittingham, R. J. Safran
2013 Proceedings of the Royal Society of London. Biological Sciences  
Conversely, we found no evidence that sexual selection promoted divergence in female plumage traits, or in male traits related to foraging and locomotion.  ...  Sexual selection is proposed to be an important driver of diversification in animal systems, yet previous tests of this hypothesis have produced mixed results and the mechanisms involved remain unclear  ...  We thank the British Natural History Museum for access to specimens, and the National Evolutionary Synthesis Center working group on 'Sexual selection and speciation' for discussion.  ... 
doi:10.1098/rspb.2013.1065 pmid:23864596 pmcid:PMC3730587 fatcat:anmbermkdvd2nnyn7psy7c4zze

β-NMF and Sparsity Promoting Regularizations for Complex Mixture Unmixing. Application to 2D HSQC NMR

Afef CHERNI, Sandrine ANTHOINE, Caroline CHAUX
2020 ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)  
In this work, we propose a new variational formulation for blind source separation (BSS) based on a β-divergence data fidelity term combined with sparsity promoting regularization functions.  ...  An application to 2D HSQC NMR experiments illustrates the interest and the effectiveness of the proposed method whether in simulated or real cases.  ...  In other words, we choose the β-divergence as the data fidelity term and the 1 or Ent function as the regularization term in addition to the nonnegativity constraint.  ... 
doi:10.1109/icassp40776.2020.9053154 dblp:conf/icassp/CherniAC20 fatcat:fiq5pingpndyxbu5egqtekku74

A Spectral Estimation Framework for Phase Retrieval via Bregman Divergence Minimization [article]

Bariscan Yonel, Birsen Yazici
2020 arXiv   pre-print
We begin by deconstructing spectral methods, and identify the fundamental mechanisms that inherently promote the accuracy of estimates.  ...  We then propose a general formalism for spectral estimation as approximate Bregman loss minimization in the range of the lifted forward model that is tractable by a search over rank-1, PSD matrices.  ...  Clearly, Y min yields an optimal estimator in terms of MSE over the measurement domain, as opposed to the original backprojection estimate.  ... 
arXiv:2012.01652v2 fatcat:45gxt4zvqrcz5oprjowr7j3bu4

Beyond Attention Effects: Modeling the Persuasive and Emotional Effects of Advertising Creativity

Xiaojing Yang, Robert E. Smith
2009 Marketing science (Providence, R.I.)  
In addition, the model hypothesizes that the level of involvement with the ad moderates the desire to postpone closure effects but not the emotional impact.  ...  An overall model of the impact of ad creativity is developed and tested using structural equations analysis. Results from three experiments show the model receives good support.  ...  Acknowledgments This research was supported by grants from the Lubar School of Business, University of Wisconsin-Milwaukee; and the Kelley School of Business, Indiana University.  ... 
doi:10.1287/mksc.1080.0460 fatcat:bbumphoyjbg27m2fn2ok2z7zxi

Regional financialisation and financial systems convergence: Evidence from Italy

Philip Arestis, Giuseppe Fontana, Peter Phelps
2016 Environment and planning A  
The paper concludes that financial divergence has broadly increased in Italian regions.  ...  The term 'financialisation' has now entered the lexicon of academics and policy makers, though there is still no agreement on its meaning and significance.  ...  convergence or divergence, as set out in equations (3)-(5), remain relevant.  ... 
doi:10.1177/0308518x16664192 fatcat:4hczpttvvzabfjfytbtivuzisi

Building Queries for Prior-Art Search [chapter]

Parvaz Mahdabi, Mostafa Keikha, Shima Gerani, Monica Landoni, Fabio Crestani
2011 Lecture Notes in Computer Science  
To this end we investigate the distribution of terms occurring in different fields of the query patent and compare the distributions with the rest of the collection using language modeling estimation techniques  ...  We experiment with term weighting based on the Kullback-Leibler divergence between the query patent and the collection and also with parsimonious language model estimation.  ...  We estimate the query model θ Q f by calculating the relative frequencies for terms in the filed f of the query document.  ... 
doi:10.1007/978-3-642-21353-3_2 fatcat:3vq736tl7reu3d3kixdb2yb62u

Estimating consequences of three-body forces

H. W. Grießhammer
2008 Few-body systems  
Classifying the strengthes of three-body forces 3BFs with the condition that observables must be cut-off independent, i.e. renormalised at each order, leads to surprising results with relevance for example  ...  Details and a better bibliography in Ref. [1].  ...  Supported in part by the US Department of Energy (DE-FG02-95ER-40907) and a CAREER-grant PHY-0645498 of the US National Science Foundation.  ... 
doi:10.1007/s00601-008-0275-x fatcat:izai75kthvdk3mmjhuo4sioali

Mood and Risk-Taking as Momentum for Creativity

Tsutomu Harada
2021 Frontiers in Psychology  
In particular, no related studies exist that took a computational approach to estimate the relevant parameters in the framework of dynamic optimization.  ...  The results indeed accounted for the relevance of this theory to divergent thinking.  ...  This allows for estimating the interdependence of relevant parameters in a statistically consistent manner.  ... 
doi:10.3389/fpsyg.2020.610562 pmid:33551921 pmcid:PMC7858252 fatcat:qxaexili7bg6zlpulyoewgxdoi

What makes a query difficult?

David Carmel, Elad Yom-Tov, Adam Darlow, Dan Pelleg
2006 Proceedings of the 29th annual international ACM SIGIR conference on Research and development in information retrieval - SIGIR '06  
In the absence of knowledge about one of the model components, the model is still useful by approximating the missing component based on the other components.  ...  The three components of a topic are the textual expression describing the information need (the query or queries), the set of documents relevant to the topic (the Qrels), and the entire collection of documents  ...  The authors thank Shai Fine for his invaluable suggestions regarding the model and the JSD distance.  ... 
doi:10.1145/1148170.1148238 dblp:conf/sigir/CarmelYDP06 fatcat:k5y2rmgxbzarfb2pqdj2dxjaoq

Transcriptional bursts in a non-equilibrium model for gene regulation by supercoiling

M. Ancona, A. Bentivoglio, C.A. Brackley, G. Gonnella, D. Marenduzzo
2019 Biophysical Journal  
In the bursty phase, the statistics of supercoiling fluctuations at the promoter are markedly non-Gaussian.  ...  We analyze transcriptional bursting within a stochastic nonequilibrium model, which accounts for the coupling between the dynamics of DNA supercoiling and gene transcription.  ...  As the flux term acts only at x = 0, solving the model in the mean field approximation is equivalent to solving the following ODE: The solution of Eq.  ... 
doi:10.1016/j.bpj.2019.04.023 pmid:31103229 pmcid:PMC6702136 fatcat:qv5hutz6gzdnxogwyeegktsidu

Transcriptional bursts in a non-equilibrium model for gene regulation by supercoiling [article]

Marco Ancona, Alessandro Bentivoglio, Chris A. Brackley, Giuseppe Gonnella, Davide Marenduzzo
2019 arXiv   pre-print
In the bursty phase, the statistics of supercoiling fluctuations at the promoter are markedly non-Gaussian.  ...  We analyse transcriptional bursting within a stochastic non-equilibrium model which accounts for the coupling between the dynamics of DNA supercoiling and gene transcription.  ...  As the flux term acts only at x = 0, solving the model in the mean field approximation is equivalent to solving the following ODE: The solution of Eq.  ... 
arXiv:1904.11310v1 fatcat:sjcnp53umjcrbflmqy3v4gafba

Independent evolution of the sexes promotes amphibian diversification

S. P. De Lisle, L. Rowe
2015 Proceedings of the Royal Society of London. Biological Sciences  
promote diversification.  ...  Consistent with this novel hypothesis, the evolution of SSD in amphibians is associated with reduced current extinction threat status, and an historical reduction in extinction rate.  ...  This work benefited from the criticisms and comments of Aneil Agrawal, Penelope Gorton, Niclas Kolm, Alex Pyron, Gavin Thomas and John Wiens, and we are grateful to Sergey Gavrilets for discussion.  ... 
doi:10.1098/rspb.2014.2213 pmid:25694616 pmcid:PMC4345436 fatcat:rbvwlbkxbvbxdmefocw2c4qjgi

DEEP DIVERSIFICATION AND LONG-TERM PERSISTENCE IN THE SOUTH AMERICAN 'DRY DIAGONAL': INTEGRATING CONTINENT-WIDE PHYLOGEOGRAPHY AND DISTRIBUTION MODELING OF GECKOS

Fernanda P. Werneck, Tony Gamble, Guarino R. Colli, Miguel T. Rodrigues, Jack W. Sites Jr
2012 Evolution  
Phylogeographic structure and distribution models highlight that persistence across multiple isolated regions shaped the diversification of this species complex.  ...  The relative influence of Neogene geomorphological events and Quaternary climatic changes as causal mechanisms on Neotropical diversification remains largely speculative, as most divergence timing inferences  ...  Model choice can affect estimates and conclusions, so alternative models should represent biologically relevant hypotheses in the simplest way possible, and model fit should be explored (Carstens and  ... 
doi:10.1111/j.1558-5646.2012.01682.x pmid:23025595 fatcat:cweevtckjzbe7jrq2amhqaav3y

Environmental niche divergence between genetically distant lineages of an endangered water beetle

DAVID SÁNCHEZ-FERNÁNDEZ, JORGE M. LOBO, PEDRO ABELLÁN, ANDRÉS MILLÁN
2011 Biological Journal of the Linnean Society  
Using a modelling approach directed to generate niche representation from distributional data, we found a significant environmental niche divergence for allopatric lineages of O. glaber that followed an  ...  Differences in niche characteristics could become a new and useful criterion in helping to decide the status of conflicting taxonomical entities.  ...  ACKNOWLEDGEMENTS We thank Félix Picazo, Josefa Velasco, and Paula Arribas for their help in several stages of the manuscript, as well as three anonymous referees for their comments.  ... 
doi:10.1111/j.1095-8312.2011.01668.x fatcat:f6lv7loj6rhz5cq6lkzmxduyjy
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